diff --git a/api/src/types.rs b/api/src/types.rs
index 6af238a45..d82a74a7e 100644
--- a/api/src/types.rs
+++ b/api/src/types.rs
@@ -13,7 +13,6 @@
 // limitations under the License.
 
 use crate::chain;
-use crate::core::consensus::YEAR_HEIGHT;
 use crate::core::core::hash::Hashed;
 use crate::core::core::merkle_proof::MerkleProof;
 use crate::core::core::{FeeFields, KernelFeatures, TxKernel};
@@ -518,13 +517,10 @@ impl TxKernelPrintable {
 				relative_height,
 			} => (fee, relative_height.into()),
 		};
-		let height = 2 * YEAR_HEIGHT; // print as if post-HF4
-		let fee = fee_fields.fee(height);
-		let fee_shift: u8 = fee_fields.fee_shift(height);
 		TxKernelPrintable {
 			features,
-			fee_shift,
-			fee,
+			fee_shift: fee_fields.fee_shift(),
+			fee: fee_fields.fee(),
 			lock_height,
 			excess: k.excess.to_hex(),
 			excess_sig: (&k.excess_sig.to_raw_data()[..]).to_hex(),
diff --git a/chain/tests/mine_nrd_kernel.rs b/chain/tests/mine_nrd_kernel.rs
index bf5001df7..ee6d2816e 100644
--- a/chain/tests/mine_nrd_kernel.rs
+++ b/chain/tests/mine_nrd_kernel.rs
@@ -33,7 +33,7 @@ where
 {
 	let prev = chain.head_header().unwrap();
 	let next_header_info = consensus::next_difficulty(1, chain.difficulty_iter().unwrap());
-	let fee = txs.iter().map(|x| x.fee(prev.height + 1)).sum();
+	let fee = txs.iter().map(|x| x.fee()).sum();
 	let reward =
 		reward::output(keychain, &ProofBuilder::new(keychain), key_id, fee, false).unwrap();
 
diff --git a/chain/tests/mine_simple_chain.rs b/chain/tests/mine_simple_chain.rs
index 2f1b7ba9f..d05bbffab 100644
--- a/chain/tests/mine_simple_chain.rs
+++ b/chain/tests/mine_simple_chain.rs
@@ -1030,8 +1030,7 @@ where
 	let proof_size = global::proofsize();
 	let key_id = ExtKeychainPath::new(1, key_idx, 0, 0, 0).to_identifier();
 
-	let height = prev.height + 1;
-	let fees = txs.iter().map(|tx| tx.fee(height)).sum();
+	let fees = txs.iter().map(|tx| tx.fee()).sum();
 	let reward =
 		libtx::reward::output(kc, &libtx::ProofBuilder::new(kc), &key_id, fees, false).unwrap();
 	let mut b = match core::core::Block::new(prev, txs, Difficulty::from_num(diff), reward) {
diff --git a/chain/tests/nrd_validation_rules.rs b/chain/tests/nrd_validation_rules.rs
index 8551657ee..667aa0782 100644
--- a/chain/tests/nrd_validation_rules.rs
+++ b/chain/tests/nrd_validation_rules.rs
@@ -54,7 +54,7 @@ where
 {
 	let next_header_info =
 		consensus::next_difficulty(prev.height, chain.difficulty_iter().unwrap());
-	let fee = txs.iter().map(|x| x.fee(prev.height + 1)).sum();
+	let fee = txs.iter().map(|x| x.fee()).sum();
 	let reward =
 		reward::output(keychain, &ProofBuilder::new(keychain), key_id, fee, false).unwrap();
 
diff --git a/chain/tests/process_block_cut_through.rs b/chain/tests/process_block_cut_through.rs
index f43d6b2de..c7d38a0d4 100644
--- a/chain/tests/process_block_cut_through.rs
+++ b/chain/tests/process_block_cut_through.rs
@@ -40,7 +40,7 @@ where
 	let prev = chain.head_header().unwrap();
 	let next_height = prev.height + 1;
 	let next_header_info = consensus::next_difficulty(1, chain.difficulty_iter()?);
-	let fee = txs.iter().map(|x| x.fee(next_height)).sum();
+	let fee = txs.iter().map(|x| x.fee()).sum();
 	let key_id = ExtKeychainPath::new(1, next_height as u32, 0, 0, 0).to_identifier();
 	let reward =
 		reward::output(keychain, &ProofBuilder::new(keychain), &key_id, fee, false).unwrap();
@@ -126,9 +126,8 @@ fn process_block_cut_through() -> Result<(), chain::Error> {
 		.any(|output| output.commitment() == commit));
 
 	// Transaction is invalid due to cut-through.
-	let height = 7;
 	assert_eq!(
-		tx.validate(Weighting::AsTransaction, height),
+		tx.validate(Weighting::AsTransaction),
 		Err(transaction::Error::CutThrough),
 	);
 
diff --git a/chain/tests/test_coinbase_maturity.rs b/chain/tests/test_coinbase_maturity.rs
index 022153f29..1ba347258 100644
--- a/chain/tests/test_coinbase_maturity.rs
+++ b/chain/tests/test_coinbase_maturity.rs
@@ -106,7 +106,7 @@ fn test_coinbase_maturity() {
 		.unwrap();
 
 		let txs = &[coinbase_txn.clone()];
-		let fees = txs.iter().map(|tx| tx.fee(prev.height + 1)).sum();
+		let fees = txs.iter().map(|tx| tx.fee()).sum();
 		let reward = libtx::reward::output(&keychain, &builder, &key_id3, fees, false).unwrap();
 		let next_header_info =
 			consensus::next_difficulty(prev.height + 1, chain.difficulty_iter().unwrap());
@@ -192,7 +192,7 @@ fn test_coinbase_maturity() {
 			.unwrap();
 
 			let txs = &[coinbase_txn.clone()];
-			let fees = txs.iter().map(|tx| tx.fee(prev.height + 1)).sum();
+			let fees = txs.iter().map(|tx| tx.fee()).sum();
 			let reward = libtx::reward::output(&keychain, &builder, &key_id3, fees, false).unwrap();
 			let next_header_info =
 				consensus::next_difficulty(prev.height + 1, chain.difficulty_iter().unwrap());
@@ -261,7 +261,7 @@ fn test_coinbase_maturity() {
 				.unwrap();
 
 			let txs = &[coinbase_txn];
-			let fees = txs.iter().map(|tx| tx.fee(prev.height + 1)).sum();
+			let fees = txs.iter().map(|tx| tx.fee()).sum();
 			let next_header_info =
 				consensus::next_difficulty(prev.height + 1, chain.difficulty_iter().unwrap());
 			let reward = libtx::reward::output(&keychain, &builder, &key_id4, fees, false).unwrap();
diff --git a/core/src/core/block.rs b/core/src/core/block.rs
index 3f1eeb5e0..b70f013ea 100644
--- a/core/src/core/block.rs
+++ b/core/src/core/block.rs
@@ -694,7 +694,7 @@ impl Block {
 
 	/// Sum of all fees (inputs less outputs) in the block
 	pub fn total_fees(&self) -> u64 {
-		self.body.fee(self.header.height)
+		self.body.fee()
 	}
 
 	/// "Lightweight" validation that we can perform quickly during read/deserialization.
diff --git a/core/src/core/transaction.rs b/core/src/core/transaction.rs
index fc4f2911b..3cb6f2e2f 100644
--- a/core/src/core/transaction.rs
+++ b/core/src/core/transaction.rs
@@ -14,7 +14,6 @@
 
 //! Transactions
 
-use crate::core::block::HeaderVersion;
 use crate::core::hash::{DefaultHashable, Hashed};
 use crate::core::{committed, Committed};
 use crate::libtx::{aggsig, secp_ser};
@@ -161,21 +160,13 @@ impl FeeFields {
 	}
 
 	/// Extract fee_shift field
-	pub fn fee_shift(&self, height: u64) -> u8 {
-		if consensus::header_version(height) < HeaderVersion(5) {
-			0
-		} else {
-			((self.0 >> FeeFields::FEE_BITS) & FeeFields::FEE_SHIFT_MASK) as u8
-		}
+	pub fn fee_shift(&self) -> u8 {
+		((self.0 >> FeeFields::FEE_BITS) & FeeFields::FEE_SHIFT_MASK) as u8
 	}
 
 	/// Extract fee field
-	pub fn fee(&self, height: u64) -> u64 {
-		if consensus::header_version(height) < HeaderVersion(5) {
-			self.0
-		} else {
-			self.0 & FeeFields::FEE_MASK
-		}
+	pub fn fee(&self) -> u64 {
+		self.0 & FeeFields::FEE_MASK
 	}
 
 	/// Turn a zero `FeeField` into a `None`, any other value into a `Some`.
@@ -1031,7 +1022,7 @@ impl TransactionBody {
 	}
 
 	/// Total fee for a TransactionBody is the sum of fees of all fee carrying kernels.
-	pub fn fee(&self, height: u64) -> u64 {
+	pub fn fee(&self) -> u64 {
 		self.kernels
 			.iter()
 			.filter_map(|k| match k.features {
@@ -1040,13 +1031,11 @@ impl TransactionBody {
 				KernelFeatures::HeightLocked { fee, .. } => Some(fee),
 				KernelFeatures::NoRecentDuplicate { fee, .. } => Some(fee),
 			})
-			.fold(0, |acc, fee_fields| {
-				acc.saturating_add(fee_fields.fee(height))
-			})
+			.fold(0, |acc, fee_fields| acc.saturating_add(fee_fields.fee()))
 	}
 
 	/// fee_shift for a TransactionBody is the maximum of fee_shifts of all fee carrying kernels.
-	pub fn fee_shift(&self, height: u64) -> u8 {
+	pub fn fee_shift(&self) -> u8 {
 		self.kernels
 			.iter()
 			.filter_map(|k| match k.features {
@@ -1055,24 +1044,24 @@ impl TransactionBody {
 				KernelFeatures::HeightLocked { fee, .. } => Some(fee),
 				KernelFeatures::NoRecentDuplicate { fee, .. } => Some(fee),
 			})
-			.fold(0, |acc, fee_fields| max(acc, fee_fields.fee_shift(height)))
+			.fold(0, |acc, fee_fields| max(acc, fee_fields.fee_shift()))
 	}
 
 	/// Shifted fee for a TransactionBody is the sum of fees shifted right by the maximum fee_shift
 	/// this is used to determine whether a tx can be relayed or accepted in a mempool
 	/// where transactions can specify a higher block-inclusion priority as a positive shift up to 15
 	/// but are required to overpay the minimum required fees by a factor of 2^priority
-	pub fn shifted_fee(&self, height: u64) -> u64 {
-		self.fee(height) >> self.fee_shift(height)
+	pub fn shifted_fee(&self) -> u64 {
+		self.fee() >> self.fee_shift()
 	}
 
 	/// aggregate fee_fields from all appropriate kernels in TransactionBody into one, if possible
-	pub fn aggregate_fee_fields(&self, height: u64) -> Result<FeeFields, Error> {
-		FeeFields::new(self.fee_shift(height) as u64, self.fee(height))
+	pub fn aggregate_fee_fields(&self) -> Result<FeeFields, Error> {
+		FeeFields::new(self.fee_shift() as u64, self.fee())
 	}
 
-	fn overage(&self, height: u64) -> i64 {
-		self.fee(height) as i64
+	fn overage(&self) -> i64 {
+		self.fee() as i64
 	}
 
 	/// Calculate weight of transaction using block weighing
@@ -1413,23 +1402,23 @@ impl Transaction {
 	}
 
 	/// Total fee for a transaction is the sum of fees of all kernels.
-	pub fn fee(&self, height: u64) -> u64 {
-		self.body.fee(height)
+	pub fn fee(&self) -> u64 {
+		self.body.fee()
 	}
 
 	/// Shifted fee for a transaction is the sum of fees of all kernels shifted right by the maximum fee shift
-	pub fn shifted_fee(&self, height: u64) -> u64 {
-		self.body.shifted_fee(height)
+	pub fn shifted_fee(&self) -> u64 {
+		self.body.shifted_fee()
 	}
 
 	/// aggregate fee_fields from all appropriate kernels in transaction into one
-	pub fn aggregate_fee_fields(&self, height: u64) -> Result<FeeFields, Error> {
-		self.body.aggregate_fee_fields(height)
+	pub fn aggregate_fee_fields(&self) -> Result<FeeFields, Error> {
+		self.body.aggregate_fee_fields()
 	}
 
 	/// Total overage across all kernels.
-	pub fn overage(&self, height: u64) -> i64 {
-		self.body.overage(height)
+	pub fn overage(&self) -> i64 {
+		self.body.overage()
 	}
 
 	/// Lock height of a transaction is the max lock height of the kernels.
@@ -1451,17 +1440,17 @@ impl Transaction {
 	/// Validates all relevant parts of a fully built transaction. Checks the
 	/// excess value against the signature as well as range proofs for each
 	/// output.
-	pub fn validate(&self, weighting: Weighting, height: u64) -> Result<(), Error> {
+	pub fn validate(&self, weighting: Weighting) -> Result<(), Error> {
 		self.body.verify_features()?;
 		self.body.validate(weighting)?;
-		self.verify_kernel_sums(self.overage(height), self.offset.clone())?;
+		self.verify_kernel_sums(self.overage(), self.offset.clone())?;
 		Ok(())
 	}
 
 	/// Can be used to compare txs by their fee/weight ratio, aka feerate.
 	/// Don't use these values for anything else though due to precision multiplier.
-	pub fn fee_rate(&self, height: u64) -> u64 {
-		self.fee(height) / self.weight() as u64
+	pub fn fee_rate(&self) -> u64 {
+		self.fee() / self.weight() as u64
 	}
 
 	/// Calculate transaction weight
@@ -1470,16 +1459,8 @@ impl Transaction {
 	}
 
 	/// Transaction minimum acceptable fee
-	pub fn accept_fee(&self, height: u64) -> u64 {
-		if consensus::header_version(height) < HeaderVersion(5) {
-			Transaction::old_weight_by_iok(
-				self.body.inputs.len() as u64,
-				self.body.outputs.len() as u64,
-				self.body.kernels.len() as u64,
-			) * consensus::MILLI_GRIN
-		} else {
-			self.weight() * global::get_accept_fee_base()
-		}
+	pub fn accept_fee(&self) -> u64 {
+		self.weight() * global::get_accept_fee_base()
 	}
 
 	/// Old weight definition for pool acceptance
diff --git a/core/src/libtx/build.rs b/core/src/libtx/build.rs
index e4b09c938..feea974dc 100644
--- a/core/src/libtx/build.rs
+++ b/core/src/libtx/build.rs
@@ -276,8 +276,7 @@ mod test {
 		)
 		.unwrap();
 
-		let height = 42; // arbitrary
-		tx.validate(Weighting::AsTransaction, height).unwrap();
+		tx.validate(Weighting::AsTransaction).unwrap();
 	}
 
 	#[test]
@@ -297,8 +296,7 @@ mod test {
 		)
 		.unwrap();
 
-		let height = 42; // arbitrary
-		tx.validate(Weighting::AsTransaction, height).unwrap();
+		tx.validate(Weighting::AsTransaction).unwrap();
 	}
 
 	#[test]
@@ -317,7 +315,6 @@ mod test {
 		)
 		.unwrap();
 
-		let height = 42; // arbitrary
-		tx.validate(Weighting::AsTransaction, height).unwrap();
+		tx.validate(Weighting::AsTransaction).unwrap();
 	}
 }
diff --git a/core/src/libtx/mod.rs b/core/src/libtx/mod.rs
index c87aa77f4..c2786c5ed 100644
--- a/core/src/libtx/mod.rs
+++ b/core/src/libtx/mod.rs
@@ -41,6 +41,6 @@ pub fn tx_fee(input_len: usize, output_len: usize, kernel_len: usize) -> u64 {
 }
 
 /// Transaction fee calculation given transaction
-pub fn accept_fee(tx: Transaction, height: u64) -> u64 {
-	tx.accept_fee(height)
+pub fn accept_fee(tx: Transaction) -> u64 {
+	tx.accept_fee()
 }
diff --git a/core/tests/common.rs b/core/tests/common.rs
index 293e98f43..958d99db2 100644
--- a/core/tests/common.rs
+++ b/core/tests/common.rs
@@ -120,10 +120,7 @@ where
 	K: Keychain,
 	B: ProofBuild,
 {
-	let fees = txs
-		.iter()
-		.map(|tx| tx.fee(previous_header.height + 1))
-		.sum();
+	let fees = txs.iter().map(|tx| tx.fee()).sum();
 	let reward_output = reward::output(keychain, builder, &key_id, fees, false).unwrap();
 	Block::new(&previous_header, txs, Difficulty::min_dma(), reward_output).unwrap()
 }
diff --git a/core/tests/core.rs b/core/tests/core.rs
index 7b3e22412..f2d6d32d3 100644
--- a/core/tests/core.rs
+++ b/core/tests/core.rs
@@ -94,8 +94,7 @@ fn simple_tx_ser_deser() {
 	let mut vec = Vec::new();
 	ser::serialize_default(&mut vec, &tx).expect("serialization failed");
 	let dtx: Transaction = ser::deserialize_default(&mut &vec[..]).unwrap();
-	let height = 42; // arbitrary
-	assert_eq!(dtx.fee(height), 2);
+	assert_eq!(dtx.fee(), 2);
 	assert_eq!(dtx.inputs().len(), 2);
 	assert_eq!(dtx.outputs().len(), 1);
 	assert_eq!(tx.hash(), dtx.hash());
@@ -157,8 +156,7 @@ fn build_tx_kernel() {
 	.unwrap();
 
 	// check the tx is valid
-	let height = 42; // arbitrary
-	tx.validate(Weighting::AsTransaction, height).unwrap();
+	tx.validate(Weighting::AsTransaction).unwrap();
 
 	// check the kernel is also itself valid
 	assert_eq!(tx.kernels().len(), 1);
@@ -166,7 +164,7 @@ fn build_tx_kernel() {
 	kern.verify().unwrap();
 
 	assert_eq!(kern.features, KernelFeatures::Plain { fee: 2.into() });
-	assert_eq!(2, tx.fee(height));
+	assert_eq!(2, tx.fee());
 }
 
 // Proof of concept demonstrating we can build two transactions that share
@@ -220,10 +218,9 @@ fn build_two_half_kernels() {
 	)
 	.unwrap();
 
-	let height = 42; // arbitrary
-	assert_eq!(tx1.validate(Weighting::AsTransaction, height), Ok(()),);
+	assert_eq!(tx1.validate(Weighting::AsTransaction), Ok(()),);
 
-	assert_eq!(tx2.validate(Weighting::AsTransaction, height), Ok(()),);
+	assert_eq!(tx2.validate(Weighting::AsTransaction), Ok(()),);
 
 	// The transactions share an identical kernel.
 	assert_eq!(tx1.kernels()[0], tx2.kernels()[0]);
@@ -247,14 +244,14 @@ fn transaction_cut_through() {
 	let tx1 = tx1i2o();
 	let tx2 = tx2i1o();
 
-	let height = 42; // arbitrary
-	assert!(tx1.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
+
+	assert!(tx1.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
 
 	// now build a "cut_through" tx from tx1 and tx2
 	let tx3 = aggregate(&[tx1, tx2]).unwrap();
 
-	assert!(tx3.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx3.validate(Weighting::AsTransaction).is_ok());
 }
 
 // Attempt to deaggregate a multi-kernel transaction in a different way
@@ -266,30 +263,30 @@ fn multi_kernel_transaction_deaggregation() {
 	let tx3 = tx1i1o();
 	let tx4 = tx1i1o();
 
-	let height = 42; // arbitrary
-	assert!(tx1.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx3.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx4.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx1.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx3.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx4.validate(Weighting::AsTransaction).is_ok());
 
 	let tx1234 = aggregate(&[tx1.clone(), tx2.clone(), tx3.clone(), tx4.clone()]).unwrap();
 	let tx12 = aggregate(&[tx1, tx2]).unwrap();
 	let tx34 = aggregate(&[tx3, tx4]).unwrap();
 
-	assert!(tx1234.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx12.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx34.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx1234.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx12.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx34.validate(Weighting::AsTransaction).is_ok());
 
 	let deaggregated_tx34 = deaggregate(tx1234.clone(), &[tx12.clone()]).unwrap();
 	assert!(deaggregated_tx34
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
+
 		.is_ok());
 	assert_eq!(tx34, deaggregated_tx34);
 
 	let deaggregated_tx12 = deaggregate(tx1234, &[tx34]).unwrap();
 
 	assert!(deaggregated_tx12
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
 		.is_ok());
 	assert_eq!(tx12, deaggregated_tx12);
 }
@@ -301,20 +298,19 @@ fn multi_kernel_transaction_deaggregation_2() {
 	let tx2 = tx1i1o();
 	let tx3 = tx1i1o();
 
-	let height = 42; // arbitrary
-	assert!(tx1.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx3.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx1.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx3.validate(Weighting::AsTransaction).is_ok());
 
 	let tx123 = aggregate(&[tx1.clone(), tx2.clone(), tx3.clone()]).unwrap();
 	let tx12 = aggregate(&[tx1, tx2]).unwrap();
 
-	assert!(tx123.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx12.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx123.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx12.validate(Weighting::AsTransaction).is_ok());
 
 	let deaggregated_tx3 = deaggregate(tx123, &[tx12]).unwrap();
 	assert!(deaggregated_tx3
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
 		.is_ok());
 	assert_eq!(tx3, deaggregated_tx3);
 }
@@ -326,21 +322,20 @@ fn multi_kernel_transaction_deaggregation_3() {
 	let tx2 = tx1i1o();
 	let tx3 = tx1i1o();
 
-	let height = 42; // arbitrary
-	assert!(tx1.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx3.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx1.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx3.validate(Weighting::AsTransaction).is_ok());
 
 	let tx123 = aggregate(&[tx1.clone(), tx2.clone(), tx3.clone()]).unwrap();
 	let tx13 = aggregate(&[tx1, tx3]).unwrap();
 	let tx2 = aggregate(&[tx2]).unwrap();
 
-	assert!(tx123.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx123.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
 
 	let deaggregated_tx13 = deaggregate(tx123, &[tx2]).unwrap();
 	assert!(deaggregated_tx13
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
 		.is_ok());
 	assert_eq!(tx13, deaggregated_tx13);
 }
@@ -354,12 +349,11 @@ fn multi_kernel_transaction_deaggregation_4() {
 	let tx4 = tx1i1o();
 	let tx5 = tx1i1o();
 
-	let height = 42; // arbitrary
-	assert!(tx1.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx3.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx4.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx5.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx1.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx3.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx4.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx5.validate(Weighting::AsTransaction).is_ok());
 
 	let tx12345 = aggregate(&[
 		tx1.clone(),
@@ -369,11 +363,11 @@ fn multi_kernel_transaction_deaggregation_4() {
 		tx5.clone(),
 	])
 	.unwrap();
-	assert!(tx12345.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx12345.validate(Weighting::AsTransaction).is_ok());
 
 	let deaggregated_tx5 = deaggregate(tx12345, &[tx1, tx2, tx3, tx4]).unwrap();
 	assert!(deaggregated_tx5
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
 		.is_ok());
 	assert_eq!(tx5, deaggregated_tx5);
 }
@@ -387,12 +381,11 @@ fn multi_kernel_transaction_deaggregation_5() {
 	let tx4 = tx1i1o();
 	let tx5 = tx1i1o();
 
-	let height = 42; // arbitrary
-	assert!(tx1.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx3.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx4.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx5.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx1.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx3.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx4.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx5.validate(Weighting::AsTransaction).is_ok());
 
 	let tx12345 = aggregate(&[
 		tx1.clone(),
@@ -405,11 +398,11 @@ fn multi_kernel_transaction_deaggregation_5() {
 	let tx12 = aggregate(&[tx1, tx2]).unwrap();
 	let tx34 = aggregate(&[tx3, tx4]).unwrap();
 
-	assert!(tx12345.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx12345.validate(Weighting::AsTransaction).is_ok());
 
 	let deaggregated_tx5 = deaggregate(tx12345, &[tx12, tx34]).unwrap();
 	assert!(deaggregated_tx5
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
 		.is_ok());
 	assert_eq!(tx5, deaggregated_tx5);
 }
@@ -421,26 +414,25 @@ fn basic_transaction_deaggregation() {
 	let tx1 = tx1i2o();
 	let tx2 = tx2i1o();
 
-	let height = 42; // arbitrary
-	assert!(tx1.validate(Weighting::AsTransaction, height).is_ok());
-	assert!(tx2.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx1.validate(Weighting::AsTransaction).is_ok());
+	assert!(tx2.validate(Weighting::AsTransaction).is_ok());
 
 	// now build a "cut_through" tx from tx1 and tx2
 	let tx3 = aggregate(&[tx1.clone(), tx2.clone()]).unwrap();
 
-	assert!(tx3.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(tx3.validate(Weighting::AsTransaction).is_ok());
 
 	let deaggregated_tx1 = deaggregate(tx3.clone(), &[tx2.clone()]).unwrap();
 
 	assert!(deaggregated_tx1
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
 		.is_ok());
 	assert_eq!(tx1, deaggregated_tx1);
 
 	let deaggregated_tx2 = deaggregate(tx3, &[tx1]).unwrap();
 
 	assert!(deaggregated_tx2
-		.validate(Weighting::AsTransaction, height)
+		.validate(Weighting::AsTransaction)
 		.is_ok());
 	assert_eq!(tx2, deaggregated_tx2);
 }
@@ -470,8 +462,7 @@ fn hash_output() {
 #[test]
 fn blind_tx() {
 	let btx = tx2i1o();
-	let height = 42; // arbitrary
-	assert!(btx.validate(Weighting::AsTransaction, height).is_ok());
+	assert!(btx.validate(Weighting::AsTransaction).is_ok());
 
 	// Ignored for bullet proofs, because calling range_proof_info
 	// with a bullet proof causes painful errors
@@ -541,8 +532,7 @@ fn tx_build_exchange() {
 	)
 	.unwrap();
 
-	let height = 42; // arbitrary
-	tx_final.validate(Weighting::AsTransaction, height).unwrap();
+	tx_final.validate(Weighting::AsTransaction).unwrap();
 }
 
 #[test]
@@ -568,7 +558,7 @@ fn reward_with_tx_block() {
 
 	let tx1 = tx2i1o();
 	let previous_header = BlockHeader::default();
-	tx1.validate(Weighting::AsTransaction, previous_header.height + 1)
+	tx1.validate(Weighting::AsTransaction)
 		.unwrap();
 
 	let block = new_block(&[tx1], &keychain, &builder, &previous_header, &key_id);
@@ -652,14 +642,12 @@ fn test_block_with_timelocked_tx() {
 pub fn test_verify_1i1o_sig() {
 	test_setup();
 	let tx = tx1i1o();
-	let height = 42; // arbitrary
-	tx.validate(Weighting::AsTransaction, height).unwrap();
+	tx.validate(Weighting::AsTransaction).unwrap();
 }
 
 #[test]
 pub fn test_verify_2i1o_sig() {
 	test_setup();
 	let tx = tx2i1o();
-	let height = 42; // arbitrary
-	tx.validate(Weighting::AsTransaction, height).unwrap();
+	tx.validate(Weighting::AsTransaction).unwrap();
 }
diff --git a/core/tests/transaction.rs b/core/tests/transaction.rs
index 9c98adac1..f0e0f2435 100644
--- a/core/tests/transaction.rs
+++ b/core/tests/transaction.rs
@@ -109,9 +109,8 @@ fn test_verify_cut_through_plain() -> Result<(), Error> {
 	.expect("valid tx");
 
 	// Transaction should fail validation due to cut-through.
-	let height = 42; // arbitrary
 	assert_eq!(
-		tx.validate(Weighting::AsTransaction, height),
+		tx.validate(Weighting::AsTransaction),
 		Err(Error::CutThrough),
 	);
 
@@ -129,7 +128,7 @@ fn test_verify_cut_through_plain() -> Result<(), Error> {
 		.replace_outputs(outputs);
 
 	// Transaction validates successfully after applying cut-through.
-	tx.validate(Weighting::AsTransaction, height)?;
+	tx.validate(Weighting::AsTransaction)?;
 
 	// Transaction validates via lightweight "read" validation as well.
 	tx.validate_read()?;
@@ -169,9 +168,8 @@ fn test_verify_cut_through_coinbase() -> Result<(), Error> {
 	.expect("valid tx");
 
 	// Transaction should fail validation due to cut-through.
-	let height = 42; // arbitrary
 	assert_eq!(
-		tx.validate(Weighting::AsTransaction, height),
+		tx.validate(Weighting::AsTransaction),
 		Err(Error::CutThrough),
 	);
 
@@ -189,7 +187,7 @@ fn test_verify_cut_through_coinbase() -> Result<(), Error> {
 		.replace_outputs(outputs);
 
 	// Transaction validates successfully after applying cut-through.
-	tx.validate(Weighting::AsTransaction, height)?;
+	tx.validate(Weighting::AsTransaction)?;
 
 	// Transaction validates via lightweight "read" validation as well.
 	tx.validate_read()?;
@@ -222,20 +220,9 @@ fn test_fee_fields() -> Result<(), Error> {
 	)
 	.expect("valid tx");
 
-	let hf4_height = 4 * consensus::TESTING_HARD_FORK_INTERVAL;
-	assert_eq!(
-		tx.accept_fee(hf4_height),
-		(1 * 1 + 1 * 21 + 1 * 3) * 500_000
-	);
-	assert_eq!(tx.fee(hf4_height), 42);
-	assert_eq!(tx.fee(hf4_height), 42);
-	assert_eq!(tx.shifted_fee(hf4_height), 21);
-	assert_eq!(
-		tx.accept_fee(hf4_height - 1),
-		(1 * 4 + 1 * 1 - 1 * 1) * 1_000_000
-	);
-	assert_eq!(tx.fee(hf4_height - 1), 42 + (1u64 << 40));
-	assert_eq!(tx.shifted_fee(hf4_height - 1), 42 + (1u64 << 40));
+	assert_eq!(tx.accept_fee(), (1 * 1 + 1 * 21 + 1 * 3) * 500_000);
+	assert_eq!(tx.fee(), 42);
+	assert_eq!(tx.shifted_fee(), 21);
 
 	tx.body.kernels.append(&mut vec![
 		TxKernel::with_features(KernelFeatures::Plain {
@@ -244,9 +231,9 @@ fn test_fee_fields() -> Result<(), Error> {
 		TxKernel::with_features(KernelFeatures::Plain { fee: 21.into() }),
 	]);
 
-	assert_eq!(tx.fee(hf4_height), 147);
-	assert_eq!(tx.shifted_fee(hf4_height), 36);
-	assert_eq!(tx.aggregate_fee_fields(hf4_height), FeeFields::new(2, 147));
+	assert_eq!(tx.fee(), 147);
+	assert_eq!(tx.shifted_fee(), 36);
+	assert_eq!(tx.aggregate_fee_fields(), FeeFields::new(2, 147));
 	assert_eq!(tx_fee(1, 1, 3), 15_500_000);
 
 	Ok(())
diff --git a/pool/src/pool.rs b/pool/src/pool.rs
index c1c2cf9c4..3e470b163 100644
--- a/pool/src/pool.rs
+++ b/pool/src/pool.rs
@@ -122,13 +122,13 @@ where
 		//   * maintain dependency ordering
 		//   * maximize cut-through
 		//   * maximize overall fees
-		let header = self.blockchain.chain_head()?;
 		let txs = self.bucket_transactions(weighting);
 
 		// Iteratively apply the txs to the current chain state,
 		// rejecting any that do not result in a valid state.
 		// Verify these txs produce an aggregated tx below max_weight.
 		// Return a vec of all the valid txs.
+		let header = self.blockchain.chain_head()?;
 		let valid_txs = self.validate_raw_txs(&txs, None, &header, weighting)?;
 		Ok(valid_txs)
 	}
@@ -155,8 +155,7 @@ where
 		let tx = transaction::aggregate(&txs)?;
 
 		// Validate the single aggregate transaction "as pool", not subject to tx weight limits.
-		let header = self.blockchain.chain_head()?;
-		tx.validate(Weighting::NoLimit, header.height)?;
+		tx.validate(Weighting::NoLimit)?;
 
 		Ok(Some(tx))
 	}
@@ -224,7 +223,7 @@ where
 	) -> Result<BlockSums, PoolError> {
 		// Validate the tx, conditionally checking against weight limits,
 		// based on weight verification type.
-		tx.validate(weighting, header.height)?;
+		tx.validate(weighting)?;
 
 		// Validate the tx against current chain state.
 		// Check all inputs are in the current UTXO set.
@@ -299,7 +298,7 @@ where
 		tx: &Transaction,
 		header: &BlockHeader,
 	) -> Result<BlockSums, PoolError> {
-		let overage = tx.overage(header.height);
+		let overage = tx.overage();
 
 		let offset = {
 			let secp = static_secp_instance();
@@ -389,14 +388,13 @@ where
 				continue;
 			}
 
-			let height = self.blockchain.chain_head().map(|x| x.height).unwrap_or(0);
 			match insert_pos {
 				None => {
 					// No parent tx, just add to the end in its own bucket.
 					// This is the common case for non 0-conf txs in the txpool.
 					// We assume the tx is valid here as we validated it on the way into the txpool.
 					insert_pos = Some(tx_buckets.len());
-					tx_buckets.push(Bucket::new(entry.tx.clone(), tx_buckets.len(), height));
+					tx_buckets.push(Bucket::new(entry.tx.clone(), tx_buckets.len()));
 				}
 				Some(pos) => {
 					// We found a single parent tx, so aggregate in the bucket
@@ -405,7 +403,7 @@ where
 					let bucket = &tx_buckets[pos];
 
 					if let Ok(new_bucket) =
-						bucket.aggregate_with_tx(entry.tx.clone(), weighting, height)
+						bucket.aggregate_with_tx(entry.tx.clone(), weighting)
 					{
 						if new_bucket.fee_rate >= bucket.fee_rate {
 							// Only aggregate if it would not reduce the fee_rate ratio.
@@ -414,11 +412,7 @@ where
 							// Otherwise put it in its own bucket at the end.
 							// Note: This bucket will have a lower fee_rate
 							// than the bucket it depends on.
-							tx_buckets.push(Bucket::new(
-								entry.tx.clone(),
-								tx_buckets.len(),
-								height,
-							));
+							tx_buckets.push(Bucket::new(entry.tx.clone(), tx_buckets.len()));
 						}
 					} else {
 						// Aggregation failed so discard this new tx.
@@ -511,9 +505,9 @@ impl Bucket {
 	/// also specifies an "age_idx" so we can sort buckets by age
 	/// as well as fee_rate. Txs are maintained in the pool in insert order
 	/// so buckets with low age_idx contain oldest txs.
-	fn new(tx: Transaction, age_idx: usize, height: u64) -> Bucket {
+	fn new(tx: Transaction, age_idx: usize) -> Bucket {
 		Bucket {
-			fee_rate: tx.fee_rate(height),
+			fee_rate: tx.fee_rate(),
 			raw_txs: vec![tx],
 			age_idx,
 		}
@@ -523,14 +517,13 @@ impl Bucket {
 		&self,
 		new_tx: Transaction,
 		weighting: Weighting,
-		height: u64,
 	) -> Result<Bucket, PoolError> {
 		let mut raw_txs = self.raw_txs.clone();
 		raw_txs.push(new_tx);
 		let agg_tx = transaction::aggregate(&raw_txs)?;
-		agg_tx.validate(weighting, height)?;
+		agg_tx.validate(weighting)?;
 		Ok(Bucket {
-			fee_rate: agg_tx.fee_rate(height),
+			fee_rate: agg_tx.fee_rate(),
 			raw_txs: raw_txs,
 			age_idx: self.age_idx,
 		})
diff --git a/pool/src/transaction_pool.rs b/pool/src/transaction_pool.rs
index ba73c71b4..b15252d2f 100644
--- a/pool/src/transaction_pool.rs
+++ b/pool/src/transaction_pool.rs
@@ -179,7 +179,7 @@ where
 
 		// Make sure the transaction is valid before anything else.
 		// Validate tx accounting for max tx weight.
-		tx.validate(Weighting::AsTransaction, header.height)
+		tx.validate(Weighting::AsTransaction)
 			.map_err(PoolError::InvalidTx)?;
 
 		// Check the tx lock_time is valid based on current chain state.
@@ -260,8 +260,7 @@ where
 		};
 
 		// Validate the tx to ensure our converted inputs are correct.
-		let header = self.chain_head()?;
-		tx.validate(Weighting::AsTransaction, header.height)?;
+		tx.validate(Weighting::AsTransaction)?;
 
 		Ok(PoolEntry::new(tx, entry.src))
 	}
@@ -352,9 +351,8 @@ where
 		// weight for a basic transaction (2 inputs, 2 outputs, 1 kernel) -
 		// (2 * 1) + (2 * 21) + (1 * 3) = 47
 		// minfees = 47 * 500_000 = 23_500_000
-		let header = self.chain_head()?;
-		if tx.shifted_fee(header.height) < tx.accept_fee(header.height) {
-			return Err(PoolError::LowFeeTransaction(tx.shifted_fee(header.height)));
+		if tx.shifted_fee() < tx.accept_fee() {
+			return Err(PoolError::LowFeeTransaction(tx.shifted_fee()));
 		}
 		Ok(())
 	}
diff --git a/pool/tests/block_max_weight.rs b/pool/tests/block_max_weight.rs
index 15c20bc7c..4091b9166 100644
--- a/pool/tests/block_max_weight.rs
+++ b/pool/tests/block_max_weight.rs
@@ -79,7 +79,7 @@ fn test_block_building_max_weight() {
 
 	// Fees and weights of our original txs in insert order.
 	assert_eq!(
-		txs.iter().map(|x| x.fee(header.height)).collect::<Vec<_>>(),
+		txs.iter().map(|x| x.fee()).collect::<Vec<_>>(),
 		[2_500_000, 90_000, 80_000, 30_000, 70_000, 60_000]
 	);
 	assert_eq!(
@@ -87,9 +87,7 @@ fn test_block_building_max_weight() {
 		[88, 46, 46, 25, 46, 46]
 	);
 	assert_eq!(
-		txs.iter()
-			.map(|x| x.fee_rate(header.height))
-			.collect::<Vec<_>>(),
+		txs.iter().map(|x| x.fee_rate()).collect::<Vec<_>>(),
 		[28409, 1956, 1739, 1200, 1521, 1304]
 	);
 
@@ -107,7 +105,7 @@ fn test_block_building_max_weight() {
 
 	// Fees and weights of the "mineable" txs.
 	assert_eq!(
-		txs.iter().map(|x| x.fee(header.height)).collect::<Vec<_>>(),
+		txs.iter().map(|x| x.fee()).collect::<Vec<_>>(),
 		[2_500_000, 90_000, 80_000, 70_000]
 	);
 	assert_eq!(
@@ -115,9 +113,7 @@ fn test_block_building_max_weight() {
 		[88, 46, 46, 46]
 	);
 	assert_eq!(
-		txs.iter()
-			.map(|x| x.fee_rate(header.height))
-			.collect::<Vec<_>>(),
+		txs.iter().map(|x| x.fee_rate()).collect::<Vec<_>>(),
 		[28409, 1956, 1739, 1521]
 	);
 
diff --git a/pool/tests/common.rs b/pool/tests/common.rs
index d8e087f25..76a8b44e1 100644
--- a/pool/tests/common.rs
+++ b/pool/tests/common.rs
@@ -75,7 +75,7 @@ where
 	let prev = chain.head_header().unwrap();
 	let height = prev.height + 1;
 	let next_header_info = consensus::next_difficulty(height, chain.difficulty_iter().unwrap());
-	let fee = txs.iter().map(|x| x.fee(height)).sum();
+	let fee = txs.iter().map(|x| x.fee()).sum();
 	let key_id = ExtKeychainPath::new(1, height as u32, 0, 0, 0).to_identifier();
 	let reward =
 		reward::output(keychain, &ProofBuilder::new(keychain), &key_id, fee, false).unwrap();
diff --git a/pool/tests/transaction_pool.rs b/pool/tests/transaction_pool.rs
index 7595d7825..54883513e 100644
--- a/pool/tests/transaction_pool.rs
+++ b/pool/tests/transaction_pool.rs
@@ -187,8 +187,7 @@ fn test_the_transaction_pool() {
 		// tx4 is the "new" part of this aggregated tx that we care about
 		let agg_tx = transaction::aggregate(&[tx1.clone(), tx2.clone(), tx4]).unwrap();
 
-		let height = 12 + 1;
-		agg_tx.validate(Weighting::AsTransaction, height).unwrap();
+		agg_tx.validate(Weighting::AsTransaction).unwrap();
 
 		pool.add_to_pool(test_source(), agg_tx, false, &header)
 			.unwrap();
diff --git a/servers/src/grin/dandelion_monitor.rs b/servers/src/grin/dandelion_monitor.rs
index 844417493..c07da7344 100644
--- a/servers/src/grin/dandelion_monitor.rs
+++ b/servers/src/grin/dandelion_monitor.rs
@@ -139,7 +139,7 @@ fn process_fluff_phase(
 	);
 
 	let agg_tx = transaction::aggregate(&fluffable_txs)?;
-	agg_tx.validate(transaction::Weighting::AsTransaction, header.height)?;
+	agg_tx.validate(transaction::Weighting::AsTransaction)?;
 
 	tx_pool.add_to_pool(TxSource::Fluff, agg_tx, false, &header)?;
 	Ok(())
diff --git a/servers/src/mining/mine_block.rs b/servers/src/mining/mine_block.rs
index cdd261f4d..1419cd85a 100644
--- a/servers/src/mining/mine_block.rs
+++ b/servers/src/mining/mine_block.rs
@@ -152,7 +152,7 @@ fn build_block(
 	};
 
 	// build the coinbase and the block itself
-	let fees = txs.iter().map(|tx| tx.fee(head.height)).sum();
+	let fees = txs.iter().map(|tx| tx.fee()).sum();
 	let height = head.height + 1;
 	let block_fees = BlockFees {
 		fees,