diff --git a/src/common/utils/balance/balance.test.tsx b/src/common/utils/balance/balance.test.tsx
new file mode 100644
index 00000000..47455776
--- /dev/null
+++ b/src/common/utils/balance/balance.test.tsx
@@ -0,0 +1,122 @@
+import BigNumber from 'bignumber.js';
+import { AssetAccount, TrasferAsset } from '@/common/types';
+import { formatBalance, formatAmount, getTotalBalance, getTransferDetails, updateAssetsBalance } from './index';
+import { Chain } from '@/common/chainRegistry/types';
+
+describe('formatBalance function', () => {
+  test('should calculate small amount', () => {
+    const { formattedValue, suffix, decimalPlaces } = formatBalance('592321079928', 12);
+
+    expect(formattedValue).toEqual('0.59232');
+    expect(suffix).toEqual('');
+    expect(decimalPlaces).toEqual(5);
+  });
+
+  test('should calculate thousands', () => {
+    const { formattedValue, suffix, decimalPlaces } = formatBalance('16172107992822306', 12);
+
+    expect(formattedValue).toEqual('16172.1');
+    expect(suffix).toEqual('');
+    expect(decimalPlaces).toEqual(2);
+  });
+
+  test('should calculate millions', () => {
+    const { formattedValue, suffix, decimalPlaces } = formatBalance('1617210799282230602', 12);
+
+    expect(formattedValue).toEqual('1.61');
+    expect(suffix).toEqual('M');
+    expect(decimalPlaces).toEqual(2);
+  });
+
+  test('should calculate billion', () => {
+    const { formattedValue, suffix, decimalPlaces } = formatBalance('8717210799282230602024', 12);
+
+    expect(formattedValue).toEqual('8.71');
+    expect(suffix).toEqual('B');
+    expect(decimalPlaces).toEqual(2);
+  });
+
+  test('should calculate trillion', () => {
+    const { formattedValue, suffix, decimalPlaces } = formatBalance('91528717210799282230602024', 12);
+
+    expect(formattedValue).toEqual('91.52');
+    expect(suffix).toEqual('T');
+    expect(decimalPlaces).toEqual(2);
+  });
+});
+
+describe('formatAmount function', () => {
+  test('should freturn zero value with empty string', () => {
+    const amount = '';
+    const formattedAmount = formatAmount(amount, 12);
+
+    expect(formattedAmount).toBe('0');
+  });
+
+  test('should format amount', () => {
+    const amount = '5';
+    const formattedAmount = formatAmount(amount, 12);
+
+    expect(formattedAmount).toBe('5000000000000');
+  });
+  test('should format amount with precision', () => {
+    const amount = '0.92321';
+    const formattedAmount = formatAmount(amount, 12);
+
+    expect(formattedAmount).toBe('923210000000');
+  });
+});
+
+describe('getTotalBalance function', () => {
+  test('should return total balance', () => {
+    const assets = [
+      { totalBalance: '100', asset: { priceId: '1' } },
+      { totalBalance: '200', asset: { priceId: '2' } },
+    ];
+    const assetsPrices = { '1': { price: 1 }, '2': { price: 2 } };
+    const totalBalance = getTotalBalance(assets as AssetAccount[], assetsPrices);
+
+    expect(totalBalance).toBe(500);
+  });
+});
+
+describe('updateAssetsBalance function', () => {
+  test('should update assets balances', () => {
+    const prevAssets = [
+      { chainId: 'chain1', totalBalance: '100' },
+      { chainId: 'chain2', totalBalance: '200' },
+    ];
+    const chain = { chainId: 'chain1' };
+    const balance = { total: () => '300', transferable: () => '250' };
+    const updatedAssets = updateAssetsBalance(prevAssets as AssetAccount[], chain as Chain, balance);
+
+    expect(updatedAssets[0].totalBalance).toBe('300');
+    expect(updatedAssets[0].transferableBalance).toBe('250');
+    expect(updatedAssets[1].totalBalance).toBe('200');
+  });
+});
+
+describe('getTransferDetails function', () => {
+  test('should return transfer details', async () => {
+    const selectedAsset = {
+      chainId: 'chain1',
+      transferableBalance: '100000000000',
+      asset: { precision: 12 },
+      isGift: false,
+    };
+    const amount = '50';
+    const estimateFee = jest.fn().mockResolvedValue(new BigNumber(0.00001));
+    const getExistentialDeposit = jest.fn().mockResolvedValue('10000000000');
+
+    const transferDetails = await getTransferDetails(
+      selectedAsset as TrasferAsset,
+      amount,
+      estimateFee,
+      getExistentialDeposit,
+    );
+
+    expect(transferDetails.fee).toBe(0.00001);
+    expect(transferDetails.max).toBe('0.10000');
+    expect(transferDetails.formattedDeposit).toBe(0.01);
+  });
+});
diff --git a/src/common/utils/balance.ts b/src/common/utils/balance/index.ts
similarity index 94%
rename from src/common/utils/balance.ts
rename to src/common/utils/balance/index.ts
index c3f801ff..07edf5e8 100644
--- a/src/common/utils/balance.ts
+++ b/src/common/utils/balance/index.ts
@@ -1,11 +1,11 @@
 import BigNumber from 'bignumber.js';
 import { BN, BN_TEN } from '@polkadot/util';
 
-import { AssetAccount, AssetPrice, ChainAssetAccount, ChainAssetId, ChainId, TrasferAsset } from '../types';
-import { Chain } from '../chainRegistry/types';
-import { IAssetBalance } from '../balances/types';
-import { EstimateFee, GetExistentialDeposit } from '../extrinsicService/types';
-import { handleFee } from './extrinsics';
+import { AssetAccount, AssetPrice, ChainAssetAccount, ChainAssetId, ChainId, TrasferAsset } from '../../types';
+import { Chain } from '../../chainRegistry/types';
+import { IAssetBalance } from '../../balances/types';
+import { EstimateFee, GetExistentialDeposit } from '../../extrinsicService/types';
+import { handleFee } from '../extrinsics';
 
 const ZERO_BALANCE = '0';
 
diff --git a/src/common/utils/extrinsics/extrinsics.test.tsx b/src/common/utils/extrinsics/extrinsics.test.tsx
new file mode 100644
index 00000000..c9a1b68d
--- /dev/null
+++ b/src/common/utils/extrinsics/extrinsics.test.tsx
@@ -0,0 +1,42 @@
+import { handleSend, handleSendGift } from './index';
+import { TrasferAsset } from '../../types';
+
+const mockSubmitExtrinsic = jest.fn().mockResolvedValue('successHash');
+const mockEstimateFee = jest.fn().mockResolvedValue(10);
+console.log = jest.fn();
+
+const transferAsset = {
+  destinationAddress: '0x1234567890123456789012345678901234567890',
+  chainId: 'chainId',
+  amount: '100',
+  transferAll: false,
+  asset: { precision: 18 },
+};
+
+describe('handleSend function', () => {
+  test('should handle sending of funds', async () => {
+    await handleSend(mockSubmitExtrinsic, transferAsset as TrasferAsset);
+
+    expect(mockSubmitExtrinsic).toHaveBeenCalledWith('chainId', expect.any(Function));
+    expect(console.log).toHaveBeenCalledWith('Success, Hash:', 'successHash');
+  });
+});
+
+describe('handleSendGift function', () => {
+  test('should calculate the amount of a gift', async () => {
+    await handleSendGift(
+      mockSubmitExtrinsic,
+      mockEstimateFee,
+      transferAsset as TrasferAsset,
+      '0x1234567890123456789012345678901234567890',
+    );
+    expect(mockSubmitExtrinsic).toHaveBeenCalledWith('chainId', expect.any(Function));
+
+    const transferAmount = (+transferAsset.amount * Math.pow(10, 18)).toString();
+    expect(transferAmount).toEqual('100000000000000000000');
+
+    const fee = 10000000000000;
+    const giftAmount = (+transferAmount + fee).toString();
+    expect(giftAmount).toEqual('100000010000000000000');
+  });
+});
diff --git a/src/common/utils/extrinsics.ts b/src/common/utils/extrinsics/index.ts
similarity index 94%
rename from src/common/utils/extrinsics.ts
rename to src/common/utils/extrinsics/index.ts
index df4378a0..0089e182 100644
--- a/src/common/utils/extrinsics.ts
+++ b/src/common/utils/extrinsics/index.ts
@@ -2,10 +2,10 @@ import { decodeAddress } from '@polkadot/util-crypto';
 import { KeyringPair } from '@polkadot/keyring/types';
 import { Balance } from '@polkadot/types/interfaces';
 
-import { EstimateFee, ExtrinsicBuilder, SubmitExtrinsic } from '../extrinsicService/types';
-import { formatAmount } from './balance';
-import { Address, ChainId, TrasferAsset } from '../types';
-import { FAKE_ACCOUNT_ID } from './constants';
+import { EstimateFee, ExtrinsicBuilder, SubmitExtrinsic } from '../../extrinsicService/types';
+import { formatAmount } from '../balance';
+import { Address, ChainId, TrasferAsset } from '../../types';
+import { FAKE_ACCOUNT_ID } from '../constants';
 
 const transferExtrinsic = async (
   submitExtrinsic: SubmitExtrinsic,