diff --git a/jest.config.js b/jest.config.js
index 0996408b..27194f5f 100644
--- a/jest.config.js
+++ b/jest.config.js
@@ -3,6 +3,7 @@ module.exports = {
   preset: 'ts-jest',
   testEnvironment: 'node',
   testPathIgnorePatterns: ["/node_modules/","/dist/"],
+  testTimeout: 60000,
   moduleNameMapper: {
     '^axios$': require.resolve('axios'),
   }
diff --git a/src/client/TonClient.spec.ts b/src/client/TonClient.spec.ts
index 7c6f3c73..ec07bb03 100644
--- a/src/client/TonClient.spec.ts
+++ b/src/client/TonClient.spec.ts
@@ -43,6 +43,20 @@ describeConditional('TonClient', () => {
         console.log(info, shardInfo, wcShards);
     });
 
+    it('should get extra currency info', async () => {
+        // EC is rolled out only in testned yet
+        let testClient = new TonClient({
+            endpoint: 'https://testnet.toncenter.com/api/v2/jsonRPC'
+        });
+
+        let testAddr = Address.parse("0:D36CFC9E0C57F43C1A719CB9F540ED87A694693AE1535B7654B645F52814AFD7");
+
+        let res = await testClient.getContractState(testAddr);
+        let expectedEc =res.extra_currencies.find(e => e.id == 100)!;
+        expect(expectedEc).not.toBeUndefined();
+        expect(BigInt(expectedEc.amount)).toBe(10000000n);
+    });
+
     it('should locate source/result tx', async () => {
         let source = Address.parse('UQDDT0TOC4PMp894jtCo3-d1-8ltSjXMX2EuWww_pCNibsUH');
         let createdLt = '37508996000002';
diff --git a/src/client/TonClient.ts b/src/client/TonClient.ts
index 34cc3af2..6d76a9bd 100644
--- a/src/client/TonClient.ts
+++ b/src/client/TonClient.ts
@@ -26,7 +26,8 @@ import {
     TupleItem,
     TupleReader,
     StateInit,
-    OpenedContract
+    OpenedContract,
+    ExtraCurrency
 } from '@ton/core';
 import { Maybe } from "../utils/maybe";
 
@@ -302,6 +303,7 @@ export class TonClient {
         let state = info.state as 'frozen' | 'active' | 'uninitialized';
         return {
             balance,
+            extra_currencies: info.extra_currencies,
             state,
             code: info.code !== '' ? Buffer.from(info.code, 'base64') : null,
             data: info.data !== '' ? Buffer.from(info.data, 'base64') : null,
@@ -408,6 +410,8 @@ function createProvider(client: TonClient, address: Address, init: StateInit | n
             let state = await client.getContractState(address);
             let balance = state.balance;
             let last = state.lastTransaction ? { lt: BigInt(state.lastTransaction.lt), hash: Buffer.from(state.lastTransaction.hash, 'base64') } : null;
+            let ecMap: ExtraCurrency | null = null;
+
             let storage: {
                 type: 'uninit';
             } | {
@@ -436,8 +440,17 @@ function createProvider(client: TonClient, address: Address, init: StateInit | n
             } else {
                 throw Error('Unsupported state');
             }
+
+            if(state.extra_currencies.length > 0) {
+                ecMap = {};
+                for(let ec of state.extra_currencies) {
+                    ecMap[ec.id] = BigInt(ec.amount);
+                }
+            }
+
             return {
                 balance,
+                extracurrency: ecMap,
                 last,
                 state: storage,
             };
@@ -512,6 +525,7 @@ function createProvider(client: TonClient, address: Address, init: StateInit | n
                 value,
                 bounce,
                 sendMode: message.sendMode,
+                extracurrency: message.extracurrency,
                 init: neededInit,
                 body
             });
diff --git a/src/client/TonClient4.spec.ts b/src/client/TonClient4.spec.ts
index 226d461b..a50a5d46 100644
--- a/src/client/TonClient4.spec.ts
+++ b/src/client/TonClient4.spec.ts
@@ -3,6 +3,8 @@ import { TonClient } from './TonClient';
 import { TonClient4 } from './TonClient4';
 import { backoff } from '../utils/time';
 
+type ECMap = { [k: number]: bigint };
+
 let describeConditional = process.env.TEST_CLIENTS ? describe : describe.skip;
 
     describeConditional('TonClient', () => {
@@ -45,6 +47,35 @@ let describeConditional = process.env.TEST_CLIENTS ? describe : describe.skip;
         console.log(result);
     });
 
+    it('should get extra currency info', async () => {
+        let testAddresses = [
+            "-1:0000000000000000000000000000000000000000000000000000000000000000",
+            "0:C4CAC12F5BC7EEF4CF5EC84EE68CCF860921A06CA0395EC558E53E37B13C3B08",
+            "0:F5FFA780ACEE2A41663C1E32F50D771327275A42FC9D3FAB4F4D9CDE11CCA897"
+        ].map(a => Address.parse(a));
+
+        let knownEc = [239, 4294967279];
+        let expectedEc: ECMap[] = [
+            {239: 663333333334n, 4294967279: 998444444446n},
+            {239: 989097920n},
+            {239: 666666666n, 4294967279: 777777777n}
+        ];
+
+        for(let i = 0; i < testAddresses.length; i++) {
+            let res = await backoff(async () => await client.getAccount(seqno, testAddresses[i]), false);
+            let resLite = await backoff(async () => await client.getAccountLite(seqno, testAddresses[i]), false);
+            let expected = expectedEc[i];
+
+            for(let testEc of knownEc) {
+                let expCur = expected[testEc];
+                if(expCur) {
+                    expect(BigInt(res.account.balance.currencies[testEc])).toEqual(expCur);
+                    expect(BigInt(resLite.account.balance.currencies[testEc])).toEqual(expCur);
+                }
+            }
+        }
+    });
+
     it('should run method', async () => {
         let result = await client.runMethod(seqno, testAddress, 'seqno');
         console.log(result);
diff --git a/src/client/TonClient4.ts b/src/client/TonClient4.ts
index 6b5849e0..613c4d89 100644
--- a/src/client/TonClient4.ts
+++ b/src/client/TonClient4.ts
@@ -7,7 +7,7 @@
  */
 
 import axios, { AxiosAdapter, InternalAxiosRequestConfig, AxiosInstance } from "axios";
-import { Address, beginCell, Cell, comment, Contract, ContractProvider, ContractState, external, loadTransaction, openContract, OpenedContract, parseTuple, serializeTuple, StateInit, storeMessage, toNano, Transaction, TupleItem, TupleReader } from "@ton/core";
+import { Address, beginCell, Cell, comment, Contract, ContractProvider, ContractState, external, ExtraCurrency, loadTransaction, openContract, OpenedContract, parseTuple, serializeTuple, StateInit, storeMessage, toNano, Transaction, TupleItem, TupleReader } from "@ton/core";
 import { Maybe } from "../utils/maybe";
 import { toUrlSafe } from "../utils/toUrlSafe";
 import { z } from 'zod';
@@ -364,8 +364,19 @@ function createProvider(client: TonClient4, block: number | null, address: Addre
                 throw Error('Unsupported state');
             }
 
+            let ecMap: ExtraCurrency | null = null;
+
+            if(state.account.balance.currencies) {
+                ecMap = {};
+                let currencies = state.account.balance.currencies;
+                for(let [k, v] of Object.entries(currencies)) {
+                    ecMap[Number(k)] = BigInt(v);
+                }
+            }
+
             return {
                 balance: BigInt(state.account.balance.coins),
+                extracurrency: ecMap,
                 last: last,
                 state: storage
             };
@@ -448,6 +459,7 @@ function createProvider(client: TonClient4, block: number | null, address: Addre
             await via.send({
                 to: address,
                 value,
+                extracurrency: message.extracurrency,
                 bounce,
                 sendMode: message.sendMode,
                 init: neededInit,
@@ -561,7 +573,8 @@ const accountCodec = z.object({
             z.object({ type: z.literal('frozen'), stateHash: z.string() })
         ]),
         balance: z.object({
-            coins: z.string()
+            coins: z.string(),
+            currencies: z.record(z.string(), z.string())
         }),
         last: z.union([
             z.null(),
@@ -589,7 +602,8 @@ const accountLiteCodec = z.object({
             z.object({ type: z.literal('frozen'), stateHash: z.string() })
         ]),
         balance: z.object({
-            coins: z.string()
+            coins: z.string(),
+            currencies: z.record(z.string(), z.string())
         }),
         last: z.union([
             z.null(),
diff --git a/src/client/api/HttpApi.ts b/src/client/api/HttpApi.ts
index be180f6e..7244ba4a 100644
--- a/src/client/api/HttpApi.ts
+++ b/src/client/api/HttpApi.ts
@@ -24,6 +24,11 @@ const blockIdExt = z.object({
 
 const addressInformation = z.object({
     balance: z.union([z.number(), z.string()]),
+    extra_currencies: z.array(z.object({
+        '@type': z.literal("extraCurrency"),
+        id: z.number(),
+        amount: z.string()
+    })),
     state: z.union([z.literal('active'), z.literal('uninitialized'), z.literal('frozen')]),
     data: z.string(),
     code: z.string(),
diff --git a/src/utils/testWallets.ts b/src/utils/testWallets.ts
new file mode 100644
index 00000000..648fa1ee
--- /dev/null
+++ b/src/utils/testWallets.ts
@@ -0,0 +1,28 @@
+import { OpenedContract } from '@ton/core';
+import { WalletContractV5R1 } from '../wallets/v5r1/WalletContractV5R1';
+import { WalletContractV5Beta } from '../wallets/v5beta/WalletContractV5Beta';
+import { WalletContractV4 } from '../wallets/WalletContractV4';
+import { WalletContractV3R2 } from '../wallets/WalletContractV3R2';
+import { WalletContractV3R1 } from '../wallets/WalletContractV3R1';
+import { WalletContractV2R2 } from '../wallets/WalletContractV2R2';
+import { WalletContractV2R1 } from '../wallets/WalletContractV2R1';
+import { WalletContractV1R2 } from '../wallets/WalletContractV1R2';
+import { WalletContractV1R1 } from '../wallets/WalletContractV1R1';
+
+
+type WalletContract = WalletContractV5R1 | WalletContractV5Beta | WalletContractV4 | WalletContractV3R2 | WalletContractV3R1 | WalletContractV2R2 | WalletContractV2R1 | WalletContractV1R2 | WalletContractV1R1;
+
+export const tillNextSeqno = async(wallet: OpenedContract<WalletContract>, oldSeqno: number, maxTries: number = 10) => {
+    let seqNoAfter = oldSeqno;
+    let tried = 0;
+
+    do {
+        await new Promise((resolve, reject) => {
+            setTimeout(resolve, 2000);
+        });
+        seqNoAfter = await wallet.getSeqno();
+        if(tried++ > maxTries) {
+            throw Error("To many retries, transaction likely failed!");
+        }
+    } while(seqNoAfter == oldSeqno);
+}
diff --git a/src/wallets/WalletContractV1R1.spec.ts b/src/wallets/WalletContractV1R1.spec.ts
index 80ab8dcc..b5498b48 100644
--- a/src/wallets/WalletContractV1R1.spec.ts
+++ b/src/wallets/WalletContractV1R1.spec.ts
@@ -10,6 +10,7 @@ import { randomTestKey } from "../utils/randomTestKey";
 import { createTestClient4 } from "../utils/createTestClient4";
 import { Address, internal } from "@ton/core";
 import { WalletContractV1R1 } from "./WalletContractV1R1";
+import { tillNextSeqno } from "../utils/testWallets";
 
 describe('WalletContractV1R1', () => {
     
@@ -46,5 +47,30 @@ describe('WalletContractV1R1', () => {
 
         // Perform transfer
         await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
     });
-});
\ No newline at end of file
+
+    it('should perform extra currency transfer', async () => {
+        // Create contract
+        let client = createTestClient4();
+        let key = randomTestKey('v4-treasure');
+        let contract = client.open(WalletContractV1R1.create({ workchain: 0, publicKey: key.publicKey }));
+
+        // Prepare transfer
+        let seqno = await contract.getSeqno();
+        let transfer = contract.createTransfer({
+            seqno,
+            secretKey: key.secretKey,
+            message: internal({
+                to: 'kQD6oPnzaaAMRW24R8F0_nlSsJQni0cGHntR027eT9_sgtwt',
+                value: '0.01',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello, extra currency v1r1!'
+            })
+        });
+
+        // Perform transfer
+        await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
+    });
+});
diff --git a/src/wallets/WalletContractV1R1.ts b/src/wallets/WalletContractV1R1.ts
index b9d0570d..8e019f3f 100644
--- a/src/wallets/WalletContractV1R1.ts
+++ b/src/wallets/WalletContractV1R1.ts
@@ -110,6 +110,7 @@ export class WalletContractV1R1 implements Contract {
                     message: internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/WalletContractV1R2.spec.ts b/src/wallets/WalletContractV1R2.spec.ts
index 0e517394..ba75f9d4 100644
--- a/src/wallets/WalletContractV1R2.spec.ts
+++ b/src/wallets/WalletContractV1R2.spec.ts
@@ -10,6 +10,7 @@ import { randomTestKey } from "../utils/randomTestKey";
 import { createTestClient4 } from "../utils/createTestClient4";
 import { Address, internal } from "@ton/core";
 import { WalletContractV1R2 } from "./WalletContractV1R2";
+import { tillNextSeqno } from "../utils/testWallets";
 
 describe('WalletContractV1R2', () => {
     it('should has balance and correct address', async () => {
@@ -44,5 +45,30 @@ describe('WalletContractV1R2', () => {
 
         // Perform transfer
         await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
     });
-});
\ No newline at end of file
+
+    it('should perform extra currency transfer', async () => {
+        // Create contract
+        let client = createTestClient4();
+        let key = randomTestKey('v4-treasure');
+        let contract = client.open(WalletContractV1R2.create({ workchain: 0, publicKey: key.publicKey }));
+
+        // Prepare transfer
+        let seqno = await contract.getSeqno();
+        let transfer = contract.createTransfer({
+            seqno,
+            secretKey: key.secretKey,
+            message: internal({
+                to: 'kQD6oPnzaaAMRW24R8F0_nlSsJQni0cGHntR027eT9_sgtwt',
+                value: '0.01',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello, extra currency v1r2!'
+            })
+        });
+
+        // Perform transfer
+        await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
+    });
+});
diff --git a/src/wallets/WalletContractV1R2.ts b/src/wallets/WalletContractV1R2.ts
index 2c6cb02f..ae961d0e 100644
--- a/src/wallets/WalletContractV1R2.ts
+++ b/src/wallets/WalletContractV1R2.ts
@@ -111,6 +111,7 @@ export class WalletContractV1R2 implements Contract {
                     message: internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/WalletContractV2R1.spec.ts b/src/wallets/WalletContractV2R1.spec.ts
index dd017615..24b70401 100644
--- a/src/wallets/WalletContractV2R1.spec.ts
+++ b/src/wallets/WalletContractV2R1.spec.ts
@@ -10,6 +10,7 @@ import { randomTestKey } from "../utils/randomTestKey";
 import { createTestClient4 } from "../utils/createTestClient4";
 import { Address, internal } from "@ton/core";
 import { WalletContractV2R1 } from "./WalletContractV2R1";
+import { tillNextSeqno } from "../utils/testWallets";
 
 describe('WalletContractV2R1', () => {
     it('should has balance and correct address', async () => {
@@ -44,5 +45,30 @@ describe('WalletContractV2R1', () => {
 
         // Perform transfer
         await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
     });
-});
\ No newline at end of file
+
+    it('should perform extra currency transfer', async () => {
+        // Create contract
+        let client = createTestClient4();
+        let key = randomTestKey('v4-treasure');
+        let contract = client.open(WalletContractV2R1.create({ workchain: 0, publicKey: key.publicKey }));
+
+        // Prepare transfer
+        let seqno = await contract.getSeqno();
+        let transfer = contract.createTransfer({
+            seqno,
+            secretKey: key.secretKey,
+            messages: [internal({
+                to: 'kQD6oPnzaaAMRW24R8F0_nlSsJQni0cGHntR027eT9_sgtwt',
+                value: '0.01',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello, extra currency v2r1!'
+            })]
+        });
+
+        // Perform transfer
+        await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
+    });
+});
diff --git a/src/wallets/WalletContractV2R1.ts b/src/wallets/WalletContractV2R1.ts
index 09b3d42a..a35f2dbf 100644
--- a/src/wallets/WalletContractV2R1.ts
+++ b/src/wallets/WalletContractV2R1.ts
@@ -114,6 +114,7 @@ export class WalletContractV2R1 implements Contract {
                     messages: [internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/WalletContractV2R2.spec.ts b/src/wallets/WalletContractV2R2.spec.ts
index 460d3967..e9073b85 100644
--- a/src/wallets/WalletContractV2R2.spec.ts
+++ b/src/wallets/WalletContractV2R2.spec.ts
@@ -10,6 +10,7 @@ import { randomTestKey } from "../utils/randomTestKey";
 import { createTestClient4 } from "../utils/createTestClient4";
 import { Address, internal } from "@ton/core";
 import { WalletContractV2R2 } from "./WalletContractV2R2";
+import { tillNextSeqno } from "../utils/testWallets";
 
 describe('WalletContractV2R2', () => {
     it('should has balance and correct address', async () => {
@@ -44,5 +45,32 @@ describe('WalletContractV2R2', () => {
 
         // Perform transfer
         await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
     });
-});
\ No newline at end of file
+
+    it('should perfrorm extra currency transfer', async () => {
+        // Create contract
+        let client = createTestClient4();
+        let key = randomTestKey('v4-treasure');
+        let contract = client.open(WalletContractV2R2.create({ workchain: 0, publicKey: key.publicKey }));
+
+        // Prepare transfer
+        let seqno = await contract.getSeqno();
+        let transfer = contract.createTransfer({
+            seqno,
+            secretKey: key.secretKey,
+            messages: [internal({
+                to: 'kQD6oPnzaaAMRW24R8F0_nlSsJQni0cGHntR027eT9_sgtwt',
+                value: '0.01',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello, extra currency v2r2!'
+            })]
+        });
+
+        // Perform transfer
+        await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
+
+
+    });
+});
diff --git a/src/wallets/WalletContractV2R2.ts b/src/wallets/WalletContractV2R2.ts
index 2603d419..ef3f0fc0 100644
--- a/src/wallets/WalletContractV2R2.ts
+++ b/src/wallets/WalletContractV2R2.ts
@@ -114,6 +114,7 @@ export class WalletContractV2R2 implements Contract {
                     messages: [internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/WalletContractV3R1.spec.ts b/src/wallets/WalletContractV3R1.spec.ts
index 69bc064f..26371a3c 100644
--- a/src/wallets/WalletContractV3R1.spec.ts
+++ b/src/wallets/WalletContractV3R1.spec.ts
@@ -10,6 +10,7 @@ import { randomTestKey } from "../utils/randomTestKey";
 import { createTestClient4 } from "../utils/createTestClient4";
 import { Address, internal } from "@ton/core";
 import { WalletContractV3R1 } from "./WalletContractV3R1";
+import { tillNextSeqno } from "../utils/testWallets";
 
 describe('WalletContractV3R1', () => {
     it('should has balance and correct address', async () => {
@@ -44,5 +45,31 @@ describe('WalletContractV3R1', () => {
 
         // Perform transfer
         await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
     });
-});
\ No newline at end of file
+
+    it('should perform extra currency transfer', async () => {
+        // Create contract
+        let client = createTestClient4();
+        let key = randomTestKey('v4-treasure');
+        let contract = client.open(WalletContractV3R1.create({ workchain: 0, publicKey: key.publicKey }));
+
+        // Prepare transfer
+        let seqno = await contract.getSeqno();
+        let transfer = contract.createTransfer({
+            seqno,
+            secretKey: key.secretKey,
+            messages: [internal({
+                to: 'kQD6oPnzaaAMRW24R8F0_nlSsJQni0cGHntR027eT9_sgtwt',
+                value: '0.05',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello, extra currency v3r1!'
+            })]
+        });
+
+        // Perform transfer
+        await contract.send(transfer);
+        await tillNextSeqno(contract, seqno);
+    });
+
+});
diff --git a/src/wallets/WalletContractV3R1.ts b/src/wallets/WalletContractV3R1.ts
index 927be6e2..fabb8ac9 100644
--- a/src/wallets/WalletContractV3R1.ts
+++ b/src/wallets/WalletContractV3R1.ts
@@ -113,6 +113,7 @@ export class WalletContractV3R1 implements Contract {
                     messages: [internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/WalletContractV3R2.spec.ts b/src/wallets/WalletContractV3R2.spec.ts
index 17137db1..2fa5b6bd 100644
--- a/src/wallets/WalletContractV3R2.spec.ts
+++ b/src/wallets/WalletContractV3R2.spec.ts
@@ -10,6 +10,7 @@ import { randomTestKey } from "../utils/randomTestKey";
 import { createTestClient4 } from "../utils/createTestClient4";
 import { Address, internal } from "@ton/core";
 import { WalletContractV3R2 } from "./WalletContractV3R2";
+import { tillNextSeqno } from "../utils/testWallets";
 
 describe('WalletContractV3R1', () => {
 
@@ -46,5 +47,33 @@ describe('WalletContractV3R1', () => {
 
         // Perform transfer
         await contract.send(transfer);
+
+        await tillNextSeqno(contract, seqno);
+    });
+
+    it('should perform extra currency transfer', async () => {
+        // Create contract
+        let client = createTestClient4();
+        let key = randomTestKey('v4-treasure');
+        let contract = client.open(WalletContractV3R2.create({ workchain: 0, publicKey: key.publicKey }));
+
+        // Prepare transfer
+        let seqno = await contract.getSeqno();
+        let transfer = contract.createTransfer({
+            seqno,
+            secretKey: key.secretKey,
+            messages: [internal({
+                to: 'kQD6oPnzaaAMRW24R8F0_nlSsJQni0cGHntR027eT9_sgtwt',
+                value: '0.05',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello, extra currency v3r2!'
+            })]
+        });
+
+        // Perform transfer
+        await contract.send(transfer);
+
+        await tillNextSeqno(contract, seqno);
+
     });
-});
\ No newline at end of file
+});
diff --git a/src/wallets/WalletContractV3R2.ts b/src/wallets/WalletContractV3R2.ts
index 70f72798..573cb8c5 100644
--- a/src/wallets/WalletContractV3R2.ts
+++ b/src/wallets/WalletContractV3R2.ts
@@ -113,6 +113,7 @@ export class WalletContractV3R2 implements Contract {
                     messages: [internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/WalletContractV4.spec.ts b/src/wallets/WalletContractV4.spec.ts
index 0c69cc11..5748b295 100644
--- a/src/wallets/WalletContractV4.spec.ts
+++ b/src/wallets/WalletContractV4.spec.ts
@@ -7,6 +7,7 @@
  */
 
 import { randomTestKey } from "../utils/randomTestKey";
+import { tillNextSeqno } from "../utils/testWallets";
 import { WalletContractV4 } from "./WalletContractV4";
 import { createTestClient4 } from "../utils/createTestClient4";
 import { Address, internal } from "@ton/core";
@@ -50,5 +51,33 @@ describe('WalletContractV4', () => {
 
         // Perform transfer
         await contract.send(transfer);
+        // Awaiting update
+        await tillNextSeqno(contract, seqno);
     });
-});
\ No newline at end of file
+
+    it('should perform extra currency transfer', async () => {
+        // Create contract
+        let client = createTestClient4();
+        let key = randomTestKey('v4-treasure');
+        let contract = client.open(WalletContractV4.create({ workchain: 0, publicKey: key.publicKey }));
+
+        // Prepare transfer
+        let seqno = await contract.getSeqno();
+        let transfer = contract.createTransfer({
+            seqno,
+            secretKey: key.secretKey,
+            messages: [internal({
+                to: 'kQD6oPnzaaAMRW24R8F0_nlSsJQni0cGHntR027eT9_sgtwt',
+                value: '0.01',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello extra currency v4'
+            })]
+        });
+
+        // Perform transfer
+        await contract.send(transfer);
+        // Awaiting update
+        await tillNextSeqno(contract, seqno);
+
+    });
+});
diff --git a/src/wallets/WalletContractV4.ts b/src/wallets/WalletContractV4.ts
index 5cf40070..b0ab4227 100644
--- a/src/wallets/WalletContractV4.ts
+++ b/src/wallets/WalletContractV4.ts
@@ -124,6 +124,7 @@ export class WalletContractV4 implements Contract {
                     messages: [internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/v5beta/WalletContractV5Beta.spec.ts b/src/wallets/v5beta/WalletContractV5Beta.spec.ts
index ab4ebe3e..e8a4a0ca 100644
--- a/src/wallets/v5beta/WalletContractV5Beta.spec.ts
+++ b/src/wallets/v5beta/WalletContractV5Beta.spec.ts
@@ -13,6 +13,7 @@ import {KeyPair, sign} from "@ton/crypto";
 import {Buffer} from "buffer";
 import {createTestClient4} from "../../utils/createTestClient4";
 import {TonClient4} from "../../client/TonClient4";
+import { tillNextSeqno } from "../../utils/testWallets";
 
 const getExtensionsArray = async (wallet: OpenedContract<WalletContractV5Beta>) => {
     try {
@@ -60,8 +61,29 @@ describe('WalletContractV5Beta', () => {
         });
 
         await wallet.send(transfer);
+        await tillNextSeqno(wallet, seqno);
     });
 
+    it('should perform extra currency transfer', async () => {
+        const seqno = await wallet.getSeqno();
+        const transfer = wallet.createTransfer({
+            seqno,
+            secretKey: walletKey.secretKey,
+            sendMode: SendMode.PAY_GAS_SEPARATELY + SendMode.IGNORE_ERRORS,
+            messages: [internal({
+                bounce: false,
+                to: 'UQB-2r0kM28L4lmq-4V8ppQGcnO1tXC7FZmbnDzWZVBkp6jE',
+                value: '0.01',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello extra currency w5beta!'
+            })]
+        });
+
+        await wallet.send(transfer);
+        await tillNextSeqno(wallet, seqno);
+    });
+
+
     it('should perform single transfer with async signing', async () => {
         const seqno = await wallet.getSeqno();
 
diff --git a/src/wallets/v5beta/WalletContractV5Beta.ts b/src/wallets/v5beta/WalletContractV5Beta.ts
index 7438d52c..62760267 100644
--- a/src/wallets/v5beta/WalletContractV5Beta.ts
+++ b/src/wallets/v5beta/WalletContractV5Beta.ts
@@ -274,6 +274,7 @@ export class WalletContractV5Beta implements Contract {
                     messages: [internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce
diff --git a/src/wallets/v5r1/WalletContractV5R1.spec.ts b/src/wallets/v5r1/WalletContractV5R1.spec.ts
index 5bccf395..e04a2dc0 100644
--- a/src/wallets/v5r1/WalletContractV5R1.spec.ts
+++ b/src/wallets/v5r1/WalletContractV5R1.spec.ts
@@ -13,6 +13,7 @@ import {Buffer} from "buffer";
 import {createTestClient4} from "../../utils/createTestClient4";
 import {TonClient4} from "../../client/TonClient4";
 import {WalletContractV5R1} from "./WalletContractV5R1";
+import { tillNextSeqno } from "../../utils/testWallets";
 
 const getExtensionsArray = async (wallet: OpenedContract<WalletContractV5R1>) => {
     try {
@@ -63,6 +64,26 @@ describe('WalletContractV5R1', () => {
         expect(sendMode).toBe(SendMode.PAY_GAS_SEPARATELY + SendMode.IGNORE_ERRORS);
 
         await wallet.send(transfer);
+        await tillNextSeqno(wallet, seqno);
+    });
+
+    it('should perform extra currency transfer', async () => {
+        const seqno = await wallet.getSeqno();
+        const transfer = wallet.createTransfer({
+            seqno,
+            secretKey: walletKey.secretKey,
+            sendMode: SendMode.PAY_GAS_SEPARATELY + SendMode.IGNORE_ERRORS,
+            messages: [internal({
+                bounce: false,
+                to: 'UQB-2r0kM28L4lmq-4V8ppQGcnO1tXC7FZmbnDzWZVBkp6jE',
+                value: '0.01',
+                extracurrency: {100: BigInt(10 ** 6)},
+                body: 'Hello extra currency w5r1!'
+            })]
+        });
+
+        await wallet.send(transfer);
+        await tillNextSeqno(wallet, seqno);
     });
 
     it('should perform single transfer with async signing', async () => {
diff --git a/src/wallets/v5r1/WalletContractV5R1.ts b/src/wallets/v5r1/WalletContractV5R1.ts
index 0b8a8e5f..0447d1c3 100644
--- a/src/wallets/v5r1/WalletContractV5R1.ts
+++ b/src/wallets/v5r1/WalletContractV5R1.ts
@@ -280,6 +280,7 @@ export class WalletContractV5R1 implements Contract {
                     messages: [internal({
                         to: args.to,
                         value: args.value,
+                        extracurrency: args.extracurrency,
                         init: args.init,
                         body: args.body,
                         bounce: args.bounce