HisabCalc › Country-specific

Crypto Tax FIFO Calculator

Work out the taxable gain on a crypto sale using first-in-first-out cost basis, and the tax at your applicable rate.

Enter your numbers

Earliest lot cost per unit

Example: 100

Second lot cost per unit

Example: 150

Units sold

Example: 1

Sale price per unit

Example: 200

Tax rate (%)

Example: 15

Result

Currency

Figures are computed on your device; nothing is sent anywhere.

Formula

costBasis = sum of earliest lot costs matched to the units sold; capitalGain = proceeds - costBasis; taxPayable = capitalGain x taxRate / 100 if the gain is positive

How the calculation works

Enter the cost of the earliest lots you hold and the number of units sold from those lots at the sale price.

The tool matches the sold units to the earliest purchase costs first, following the FIFO method used for capital gains.

It subtracts that matched cost from the sale proceeds to give the gain and applies your tax rate only when the gain is positive.

Common mistakes

Matching a sale to the cheapest lot instead of the earliest, because FIFO takes the oldest units first whatever their price.
Charging tax on the whole sale proceeds, since tax applies only to the gain after the cost of the matched lots is deducted.

When to use it

Use it to work out the gain and tax on a sale before you file your crypto tax return.
Use it to compare the FIFO result with another cost basis method where the tax rules allow a choice.

Worked example

Buying 1 unit at 100 and another at 150, then selling 1 unit for 200, matches the earliest lot at 100. The gain is 100 and at a 15 percent rate the tax is 15.

Cost basis 100.00

Capital gain 100.00

Tax payable 15.00

Common questions

Why does FIFO matter for crypto tax?

Under FIFO the oldest coins are treated as sold first, so the cost basis and the resulting gain change with the order you bought your units.

Last updated: 2026-10-03