diff --git a/packages/api-derive/src/balances/fees.ts b/packages/api-derive/src/balances/fees.ts
index 50ffc7d4d2..4823a075ad 100644
--- a/packages/api-derive/src/balances/fees.ts
+++ b/packages/api-derive/src/balances/fees.ts
@@ -14,14 +14,16 @@ import { drr } from '../util/drr';
 type Result = [Balance, Balance, Balance, Balance, Balance];
 
 function queryV2 (api: ApiInterfaceRx): Observable<Result> {
+  const paymentBase = api.consts.transactionPayment || api.consts.balances;
+
   return of([
     // get values from api.const for substrate versions post spec_version: 101
     // https://github.com/paritytech/substrate/pull/2883/files#diff-5e5e1c3aec9ddfde0a9054d062ab3db9R131
     api.consts.balances.creationFee as Balance,
     api.consts.balances.existentialDeposit as Balance,
-    api.consts.balances.transactionBaseFee as Balance,
-    api.consts.balances.transactionByteFee as Balance,
-    api.consts.balances.transferFee as Balance
+    api.consts.balances.transferFee as Balance,
+    paymentBase.transactionBaseFee as Balance,
+    paymentBase.transactionByteFee as Balance
   ]);
 }
 
@@ -30,9 +32,9 @@ function queryV1 (api: ApiInterfaceRx): Observable<Result> {
     // Support older versions and get values from storage
     api.query.balances.creationFee,
     api.query.balances.existentialDeposit,
+    api.query.balances.transferFee,
     api.query.balances.transactionBaseFee,
-    api.query.balances.transactionByteFee,
-    api.query.balances.transferFee
+    api.query.balances.transactionByteFee
   ]);
 }
 
@@ -56,7 +58,7 @@ export function fees (api: ApiInterfaceRx): () => Observable<DerivedFees> {
         ? queryV2(api)
         : queryV1(api)
     ).pipe(
-      map(([creationFee, existentialDeposit, transactionBaseFee, transactionByteFee, transferFee]): DerivedFees => ({
+      map(([creationFee, existentialDeposit, transferFee, transactionBaseFee, transactionByteFee]): DerivedFees => ({
         creationFee,
         existentialDeposit,
         transactionBaseFee,
diff --git a/packages/types/src/interfaceRegistry.ts b/packages/types/src/interfaceRegistry.ts
index 33a870d5d9..8a70967532 100644
--- a/packages/types/src/interfaceRegistry.ts
+++ b/packages/types/src/interfaceRegistry.ts
@@ -22,6 +22,7 @@ import { FullIdentification, IdentificationTuple, Keys, SessionIndex, SessionKey
 import { EraIndex, EraPoints, EraRewards, Exposure, Forcing, IndividualExposure, MomentOf, Points, RewardDestination, SlashJournalEntry, StakingLedger, UnlockChunk, ValidatorPrefs, ValidatorPrefs0to145 } from '@polkadot/types/interfaces/staking';
 import { DigestOf, DispatchError, Event, EventId, EventIndex, EventRecord, EventRecord0to76, Key, Phase } from '@polkadot/types/interfaces/system';
 import { TreasuryProposal } from '@polkadot/types/interfaces/treasury';
+import { Multiplier } from '@polkadot/types/interfaces/txpayment';
 import { DispatchResult, DispatchResultOf } from '@polkadot/types/interfaces/utility';
 import { BlockAttestations, IncludedBlocks, MoreAttestations } from '@polkadot/types/interfaces/attestations';
 import { EcdsaSignature, EthereumAddress } from '@polkadot/types/interfaces/claims';
@@ -639,6 +640,9 @@ export interface InterfaceRegistry {
   TreasuryProposal: TreasuryProposal;
   'Option<TreasuryProposal>': Option<TreasuryProposal>;
   'Vec<TreasuryProposal>': Vec<TreasuryProposal>;
+  Multiplier: Multiplier;
+  'Option<Multiplier>': Option<Multiplier>;
+  'Vec<Multiplier>': Vec<Multiplier>;
   DispatchResult: DispatchResult;
   'Option<DispatchResult>': Option<DispatchResult>;
   'Vec<DispatchResult>': Vec<DispatchResult>;
diff --git a/packages/types/src/interfaces/definitions.ts b/packages/types/src/interfaces/definitions.ts
index b9c499ee74..f0b5a5530e 100644
--- a/packages/types/src/interfaces/definitions.ts
+++ b/packages/types/src/interfaces/definitions.ts
@@ -24,6 +24,7 @@ export { default as session } from './session/definitions';
 export { default as staking } from './staking/definitions';
 export { default as system } from './system/definitions';
 export { default as treasury } from './treasury/definitions';
+export { default as txpayment } from './txpayment/definitions';
 export { default as utility } from './utility/definitions';
 
 // polkadot-specific types
diff --git a/packages/types/src/interfaces/txpayment/definitions.ts b/packages/types/src/interfaces/txpayment/definitions.ts
new file mode 100644
index 0000000000..f512d2e687
--- /dev/null
+++ b/packages/types/src/interfaces/txpayment/definitions.ts
@@ -0,0 +1,9 @@
+// Copyright 2017-2019 @polkadot/types authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+export default {
+  types: {
+    Multiplier: 'Fixed64'
+  }
+};
diff --git a/packages/types/src/interfaces/txpayment/index.ts b/packages/types/src/interfaces/txpayment/index.ts
new file mode 100644
index 0000000000..05fdc138ff
--- /dev/null
+++ b/packages/types/src/interfaces/txpayment/index.ts
@@ -0,0 +1,4 @@
+// Auto-generated via `yarn build:interfaces`, do not edit
+/* eslint-disable @typescript-eslint/no-empty-interface */
+
+export * from './types';
diff --git a/packages/types/src/interfaces/txpayment/types.ts b/packages/types/src/interfaces/txpayment/types.ts
new file mode 100644
index 0000000000..2ec08ff232
--- /dev/null
+++ b/packages/types/src/interfaces/txpayment/types.ts
@@ -0,0 +1,7 @@
+// Auto-generated via `yarn build:interfaces`, do not edit
+/* eslint-disable @typescript-eslint/no-empty-interface */
+
+import { Fixed64 } from '@polkadot/types/primitive';
+
+/** Fixed64 */
+export interface Multiplier extends Fixed64 {}
diff --git a/packages/types/src/interfaces/types.ts b/packages/types/src/interfaces/types.ts
index ee1f7b79be..296481f483 100644
--- a/packages/types/src/interfaces/types.ts
+++ b/packages/types/src/interfaces/types.ts
@@ -20,6 +20,7 @@ export * from './session/types';
 export * from './staking/types';
 export * from './system/types';
 export * from './treasury/types';
+export * from './txpayment/types';
 export * from './utility/types';
 export * from './attestations/types';
 export * from './claims/types';