diff --git a/packages/rpc-core/src/index.spec.ts b/packages/rpc-core/src/index.spec.ts
index d390caa8d0..0e8d0212e0 100644
--- a/packages/rpc-core/src/index.spec.ts
+++ b/packages/rpc-core/src/index.spec.ts
@@ -21,7 +21,7 @@ describe('Api', (): void => {
       Object.keys(rpc).filter((key): boolean => !key.startsWith('_'))
     ).toEqual([
       'provider', 'mapping', 'sections',
-      'account', 'author', 'chain', 'contracts', 'rpc', 'state', 'system'
+      'account', 'author', 'chain', 'contracts', 'payment', 'rpc', 'state', 'system'
     ]);
   });
 
diff --git a/packages/rpc-core/src/index.ts b/packages/rpc-core/src/index.ts
index 5de4a4e7ee..c40a6e21d1 100644
--- a/packages/rpc-core/src/index.ts
+++ b/packages/rpc-core/src/index.ts
@@ -86,6 +86,8 @@ export default class Rpc implements RpcInterface {
 
   public readonly contracts!: RpcInterface['contracts'];
 
+  public readonly payment!: RpcInterface['payment'];
+
   public readonly rpc!: RpcInterface['rpc'];
 
   public readonly state!: RpcInterface['state'];
diff --git a/packages/rpc-core/src/jsonrpc.types.ts b/packages/rpc-core/src/jsonrpc.types.ts
index cc0e5617d8..cabcd26756 100644
--- a/packages/rpc-core/src/jsonrpc.types.ts
+++ b/packages/rpc-core/src/jsonrpc.types.ts
@@ -6,7 +6,7 @@ import { Vec } from '@polkadot/types/codec';
 import { Bytes, Metadata, StorageData, StorageKey, Text, u64 } from '@polkadot/types';
 import { AccountId, BlockNumber, Extrinsic, Hash, Header, Index, SignedBlock } from '@polkadot/types/interfaces/runtime';
 import { ContractCallRequest, ContractExecResult } from '@polkadot/types/interfaces/contracts';
-import { ChainProperties, ExtrinsicOrHash, ExtrinsicStatus, Health, NetworkState, PeerInfo, RpcMethods, RuntimeVersion, StorageChangeSet } from '@polkadot/types/interfaces/rpc';
+import { ChainProperties, ExtrinsicOrHash, ExtrinsicStatus, Health, NetworkState, PeerInfo, RpcMethods, RuntimeDispatchInfo, RuntimeVersion, StorageChangeSet } from '@polkadot/types/interfaces/rpc';
 import { Codec, IExtrinsic } from '@polkadot/types/types';
 
 export interface RpcInterface {
@@ -32,6 +32,9 @@ export interface RpcInterface {
   contracts: {
     call(callRequest: ContractCallRequest, at?: Hash | Uint8Array | string): Observable<ContractExecResult>;
   };
+  payment: {
+    queryInfo(extrinsic: Bytes | Uint8Array | string, hash?: Hash | Uint8Array | string): Observable<RuntimeDispatchInfo>;
+  };
   rpc: {
     methods(): Observable<RpcMethods>;
   };
diff --git a/packages/type-jsonrpc/src/account.ts b/packages/type-jsonrpc/src/account.ts
index d14f1bbf5e..d2313f471e 100644
--- a/packages/type-jsonrpc/src/account.ts
+++ b/packages/type-jsonrpc/src/account.ts
@@ -21,7 +21,7 @@ const nextIndex: RpcMethodOpt = {
 const section = 'account';
 
 /**
- * @summary Calls to retrieve system info.
+ * @summary Calls to account-specific information.
  */
 export default {
   isDeprecated: false,
diff --git a/packages/type-jsonrpc/src/index.ts b/packages/type-jsonrpc/src/index.ts
index dfc157ffdc..fbd5aab83e 100644
--- a/packages/type-jsonrpc/src/index.ts
+++ b/packages/type-jsonrpc/src/index.ts
@@ -8,6 +8,7 @@ import account from './account';
 import author from './author';
 import chain from './chain';
 import contracts from './contracts';
+import payment from './payment';
 import rpc from './rpc';
 import state from './state';
 import system from './system';
@@ -17,6 +18,7 @@ const interfaces: Record<string, RpcSection> = {
   author,
   chain,
   contracts,
+  payment,
   rpc,
   state,
   system
diff --git a/packages/type-jsonrpc/src/payment.ts b/packages/type-jsonrpc/src/payment.ts
new file mode 100644
index 0000000000..ab6190dcd9
--- /dev/null
+++ b/packages/type-jsonrpc/src/payment.ts
@@ -0,0 +1,34 @@
+// Copyright 2017-2019 @polkadot/jsonrpc authors & contributors
+// This software may be modified and distributed under the terms
+// of the Apache-2.0 license. See the LICENSE file for details.
+
+import { RpcMethodOpt } from './types';
+
+import createMethod from './create/method';
+import createParam from './create/param';
+
+// NOTE order here is the same as in Rust, alphabetical below
+
+const queryInfo: RpcMethodOpt = {
+  description: 'Retrieves the fee information for an encoded extrinsic',
+  params: [
+    createParam('extrinsic', 'Bytes'),
+    createParam('hash', 'Hash', { isOptional: true })
+  ],
+  type: 'RuntimeDispatchInfo'
+};
+
+const section = 'payment';
+
+/**
+ * @summary Calls to retrieve payment information.
+ */
+export default {
+  isDeprecated: false,
+  isHidden: false,
+  description: 'Methods that retrieves payment information, e.g. fee calculations',
+  section,
+  methods: {
+    queryInfo: createMethod(section, 'queryInfo', queryInfo)
+  }
+};
diff --git a/packages/types/src/interfaceRegistry.ts b/packages/types/src/interfaceRegistry.ts
index fb10b151af..a585843a51 100644
--- a/packages/types/src/interfaceRegistry.ts
+++ b/packages/types/src/interfaceRegistry.ts
@@ -3,7 +3,7 @@
 
 import { Compact, Option, Vec } from '@polkadot/types/codec';
 import { Bytes, Data, Fixed64, H160, H256, H512, Null, StorageData, StorageHasher, StorageKey, Text, Type, U256, bool, i128, i16, i256, i32, i64, i8, u128, u16, u256, u32, u64, u8, usize } from '@polkadot/types/primitive';
-import { AccountId, AccountIdOf, AccountIndex, Address, AssetId, Balance, BalanceOf, Block, BlockNumber, Call, Consensus, ConsensusEngineId, Digest, DigestItem, EcdsaSignature, Ed25519Signature, Extrinsic, ExtrinsicEra, ExtrinsicPayload, ExtrinsicPayloadUnknown, ExtrinsicPayloadV1, ExtrinsicPayloadV2, ExtrinsicPayloadV3, ExtrinsicPayloadV4, ExtrinsicUnknown, ExtrinsicV1, ExtrinsicV2, ExtrinsicV3, ExtrinsicV4, Hash, Header, ImmortalEra, Index, Justification, KeyTypeId, KeyValue, LockIdentifier, Moment, MortalEra, MultiSignature, Origin, Perbill, Permill, Phantom, PhantomData, PreRuntime, Seal, SealV0, Signature, SignedBlock, SignerPayload, Sr25519Signature, ValidatorId, Weight, WeightMultiplier } from '@polkadot/types/interfaces/runtime';
+import { AccountId, AccountIdOf, AccountIndex, Address, AssetId, Balance, BalanceOf, Block, BlockNumber, Call, Consensus, ConsensusEngineId, Digest, DigestItem, DispatchClass, EcdsaSignature, Ed25519Signature, Extrinsic, ExtrinsicEra, ExtrinsicPayload, ExtrinsicPayloadUnknown, ExtrinsicPayloadV1, ExtrinsicPayloadV2, ExtrinsicPayloadV3, ExtrinsicPayloadV4, ExtrinsicUnknown, ExtrinsicV1, ExtrinsicV2, ExtrinsicV3, ExtrinsicV4, Hash, Header, ImmortalEra, Index, Justification, KeyTypeId, KeyValue, LockIdentifier, Moment, MortalEra, MultiSignature, Origin, Perbill, Permill, Phantom, PhantomData, PreRuntime, Seal, SealV0, Signature, SignedBlock, SignerPayload, Sr25519Signature, ValidatorId, Weight, WeightMultiplier } from '@polkadot/types/interfaces/runtime';
 import { InclusionHeight, Uncle, UncleEntryItem } from '@polkadot/types/interfaces/authorship';
 import { RawAuraPreDigest } from '@polkadot/types/interfaces/aura';
 import { BabeAuthorityWeight, BabeBlockWeight, BabeWeight, MaybeVrf, RawBabePreDigest, RawBabePreDigest0to159, RawBabePreDigestCompat, RawBabePreDigestPrimary, RawBabePreDigestPrimary0to159, RawBabePreDigestSecondary, RawBabePreDigestSecondary0to159, SlotNumber, VrfData, VrfProof } from '@polkadot/types/interfaces/babe';
@@ -28,7 +28,7 @@ import { BlockAttestations, IncludedBlocks, MoreAttestations } from '@polkadot/t
 import { EthereumAddress } from '@polkadot/types/interfaces/claims';
 import { AttestedCandidate, AuctionIndex, BalanceUpload, Bidder, CandidateReceipt, CollatorId, CollatorSignature, EgressQueueRoot, HeadData, IncomingParachain, IncomingParachainDeploy, IncomingParachainFixed, LeasePeriod, LeasePeriodOf, NewBidder, ParaId, ParaIdOf, ParaInfo, ParaScheduling, ParachainDispatchOrigin, Retriable, SlotRange, SubId, UpwardMessage, ValidatorIndex, ValidityAttestation, ValidityVote, WinningData, WinningDataEntry } from '@polkadot/types/interfaces/parachains';
 import { CallMetadataV0, DoubleMapTypeV3, DoubleMapTypeV4, DoubleMapTypeV5, DoubleMapTypeV6, DoubleMapTypeV7, DoubleMapTypeV8, ErrorMetadataV8, EventMetadataLatest, EventMetadataV0, EventMetadataV1, EventMetadataV2, EventMetadataV3, EventMetadataV4, EventMetadataV5, EventMetadataV6, EventMetadataV7, EventMetadataV8, FunctionArgumentMetadataLatest, FunctionArgumentMetadataV0, FunctionArgumentMetadataV1, FunctionArgumentMetadataV2, FunctionArgumentMetadataV3, FunctionArgumentMetadataV4, FunctionArgumentMetadataV5, FunctionArgumentMetadataV6, FunctionArgumentMetadataV7, FunctionArgumentMetadataV8, FunctionMetadataLatest, FunctionMetadataV0, FunctionMetadataV1, FunctionMetadataV2, FunctionMetadataV3, FunctionMetadataV4, FunctionMetadataV5, FunctionMetadataV6, FunctionMetadataV7, FunctionMetadataV8, MapTypeV0, MapTypeV2, MapTypeV3, MapTypeV4, MapTypeV5, MapTypeV6, MapTypeV7, MapTypeV8, MetadataV0, MetadataV1, ModuleConstantMetadataLatest, ModuleConstantMetadataV6, ModuleConstantMetadataV7, ModuleConstantMetadataV8, ModuleMetadataV0, ModuleMetadataV1, OuterDispatchCallV0, OuterDispatchMetadataV0, OuterEventEventMetadataEventsV0, OuterEventEventMetadataV0, OuterEventMetadataV0, PlainTypeLatest, PlainTypeV0, PlainTypeV2, PlainTypeV3, PlainTypeV4, PlainTypeV5, PlainTypeV6, PlainTypeV7, PlainTypeV8, RuntimeModuleMetadataV0, StorageEntryModifierLatest, StorageEntryModifierV6, StorageEntryModifierV7, StorageEntryModifierV8, StorageFunctionMetadataV0, StorageFunctionMetadataV1, StorageFunctionModifierV0, StorageFunctionModifierV1, StorageFunctionModifierV2, StorageFunctionModifierV3, StorageFunctionModifierV4, StorageFunctionModifierV5, StorageFunctionTypeV0, StorageFunctionTypeV1, StorageMetadataV0 } from '@polkadot/types/interfaces/metadata';
-import { ApiId, ChainProperties, ExtrinsicOrHash, ExtrinsicStatus, Health, KeyValueOption, NetworkState, PeerInfo, RpcMethods, RuntimeVersion, RuntimeVersionApi, StorageChangeSet } from '@polkadot/types/interfaces/rpc';
+import { ApiId, ChainProperties, ExtrinsicOrHash, ExtrinsicStatus, Health, KeyValueOption, NetworkState, PeerInfo, RpcMethods, RuntimeDispatchInfo, RuntimeVersion, RuntimeVersionApi, StorageChangeSet } from '@polkadot/types/interfaces/rpc';
 
 export interface InterfaceRegistry {
   bool: bool;
@@ -164,6 +164,9 @@ export interface InterfaceRegistry {
   DigestItem: DigestItem;
   'Option<DigestItem>': Option<DigestItem>;
   'Vec<DigestItem>': Vec<DigestItem>;
+  DispatchClass: DispatchClass;
+  'Option<DispatchClass>': Option<DispatchClass>;
+  'Vec<DispatchClass>': Vec<DispatchClass>;
   Extrinsic: Extrinsic;
   'Option<Extrinsic>': Option<Extrinsic>;
   'Vec<Extrinsic>': Vec<Extrinsic>;
@@ -1059,6 +1062,9 @@ export interface InterfaceRegistry {
   RpcMethods: RpcMethods;
   'Option<RpcMethods>': Option<RpcMethods>;
   'Vec<RpcMethods>': Vec<RpcMethods>;
+  RuntimeDispatchInfo: RuntimeDispatchInfo;
+  'Option<RuntimeDispatchInfo>': Option<RuntimeDispatchInfo>;
+  'Vec<RuntimeDispatchInfo>': Vec<RuntimeDispatchInfo>;
   RuntimeVersionApi: RuntimeVersionApi;
   'Option<RuntimeVersionApi>': Option<RuntimeVersionApi>;
   'Vec<RuntimeVersionApi>': Vec<RuntimeVersionApi>;
diff --git a/packages/types/src/interfaces/rpc/definitions.ts b/packages/types/src/interfaces/rpc/definitions.ts
index 65c4be3eba..c88b2c4bd9 100644
--- a/packages/types/src/interfaces/rpc/definitions.ts
+++ b/packages/types/src/interfaces/rpc/definitions.ts
@@ -47,6 +47,11 @@ export default {
       version: 'u32',
       methods: 'Vec<Text>'
     },
+    RuntimeDispatchInfo: {
+      weight: 'Weight',
+      class: 'DispatchClass',
+      partialFee: 'Balance'
+    },
     RuntimeVersionApi: '(ApiId, u32)',
     RuntimeVersion: {
       specName: 'Text',
diff --git a/packages/types/src/interfaces/rpc/types.ts b/packages/types/src/interfaces/rpc/types.ts
index 6b819fc422..f223246ffc 100644
--- a/packages/types/src/interfaces/rpc/types.ts
+++ b/packages/types/src/interfaces/rpc/types.ts
@@ -4,7 +4,7 @@
 import { Codec, ITuple } from '@polkadot/types/types';
 import { Enum, Option, Struct, Vec } from '@polkadot/types/codec';
 import { Bytes, StorageData, StorageKey, Text, bool, u32, u64, u8 } from '@polkadot/types/primitive';
-import { BlockNumber, Hash } from '@polkadot/types/interfaces/runtime';
+import { Balance, BlockNumber, DispatchClass, Hash, Weight } from '@polkadot/types/interfaces/runtime';
 
 /** Uint8Array, Codec */
 export interface ApiId extends Uint8Array, Codec {}
@@ -96,6 +96,16 @@ export interface RpcMethods extends Struct {
   readonly methods: Vec<Text>;
 }
 
+/** Struct */
+export interface RuntimeDispatchInfo extends Struct {
+  /** Weight */
+  readonly weight: Weight;
+  /** DispatchClass */
+  readonly class: DispatchClass;
+  /** Balance */
+  readonly partialFee: Balance;
+}
+
 /** Struct */
 export interface RuntimeVersion extends Struct {
   /** Text */
diff --git a/packages/types/src/interfaces/runtime/definitions.ts b/packages/types/src/interfaces/runtime/definitions.ts
index 8b17fed4dd..b78f4f95e8 100644
--- a/packages/types/src/interfaces/runtime/definitions.ts
+++ b/packages/types/src/interfaces/runtime/definitions.ts
@@ -17,6 +17,9 @@ export default {
     ConsensusEngineId: 'GenericConsensusEngineId',
     Digest: 'GenericDigest',
     DigestItem: 'GenericDigestItem',
+    DispatchClass: {
+      _enum: ['Normal', 'Operational']
+    },
     Extrinsic: 'GenericExtrinsic',
     ExtrinsicEra: 'GenericExtrinsicEra',
     ExtrinsicPayload: 'GenericExtrinsicPayload',
diff --git a/packages/types/src/interfaces/runtime/types.ts b/packages/types/src/interfaces/runtime/types.ts
index 0428328860..94cb14ca00 100644
--- a/packages/types/src/interfaces/runtime/types.ts
+++ b/packages/types/src/interfaces/runtime/types.ts
@@ -47,6 +47,14 @@ export interface Digest extends GenericDigest {}
 /** GenericDigestItem */
 export interface DigestItem extends GenericDigestItem {}
 
+/** Enum */
+export interface DispatchClass extends Enum {
+  /** 0:: Normal */
+  readonly isNormal: boolean;
+  /** 1:: Operational */
+  readonly isOperational: boolean;
+}
+
 /** Uint8Array, Codec */
 export interface EcdsaSignature extends Uint8Array, Codec {}