Crypto Tax Calculator

A crypto tax calculator estimates the capital gains tax you may owe when you sell, swap, or spend cryptocurrency, using three simple inputs: your sale proceeds, your cost basis, and your tax rate. Most tax systems around the world treat crypto as property rather than as money, so each disposal can trigger a taxable capital gain or a deductible capital loss. The calculator above turns those numbers into a fast estimate so you can plan ahead instead of guessing at tax time. This page explains how the tool works, how the United States, United Kingdom, and Australia tax crypto in the 2025 and 2026 tax years, and the common mistakes that catch out active traders. It is written to help you understand the mechanics, not to hand you a filing figure.

How the crypto tax calculator works

The calculator above uses a straightforward capital gains model. It subtracts what you paid from what you received, applies the tax rate you enter, and shows you the tax and the amount you keep. It does not connect to your exchange or pull live prices, so the quality of the estimate depends entirely on the numbers you feed it. Enter figures in your own currency and keep them consistent across all three inputs.

The three inputs explained

• Sale Proceeds: the total value you received when you disposed of the coin, in your local currency, after any exchange or network fees where your rules allow fees to be netted off. This is the fiat value at the moment of the sale, swap, or spend.
• Cost Basis: what the coin cost you to acquire, including the purchase price plus acquisition fees. For coins earned through mining, staking, or as income, the cost basis is usually the market value on the day you received them.
• Your Tax Rate: the percentage that applies to this gain. In the United States this is your short-term or long-term rate. In the United Kingdom it is your capital gains band. In Australia you can enter an effective rate after the discount. Enter the rate as a whole number, for example 24 for 24 percent.

The five outputs explained

• Capital Gain: sale proceeds minus cost basis. A positive number is a gain, a negative number is a loss.
• Tax Owed: the capital gain multiplied by your tax rate. On a loss this shows zero, because a loss is not taxed.
• Net After Tax: your sale proceeds minus the estimated tax owed. This is roughly what you keep before any other adjustments.
• Rate Applied: the tax rate the calculator used, echoed back so you can confirm you entered the intended figure.
• Status: a simple label telling you whether the disposal produced a gain or a loss, which affects whether tax is due or whether you may have a loss to carry.

To use the tool, follow these steps in order.

1. Find the total proceeds you received for the disposal and enter it in Sale Proceeds.
2. Add up what the coin cost you, including acquisition fees, and enter it in Cost Basis.
3. Decide which tax rate applies based on how long you held the coin and your income band, then enter it in Your Tax Rate.
4. Read the Capital Gain, Tax Owed, and Net After Tax outputs, and check the Status label to confirm whether the disposal was a gain or a loss.
5. Repeat for each disposal, because tax is calculated per disposal, not on your portfolio as a whole.

Why crypto is taxed as property

The reason a single sale can trigger tax comes down to classification. Tax authorities in the United States, United Kingdom, Australia, Canada, and many other countries treat cryptocurrency as a capital asset or property rather than as legal currency. When you dispose of property, you compare its value at disposal to your cost basis, and the difference is a capital gain or loss. A disposal is broader than most people expect. Selling crypto for fiat is a disposal. Swapping one coin for another is a disposal. Spending crypto to buy goods or services is a disposal. Gifting crypto can be a disposal in some countries. Simply buying and holding, or moving coins between your own wallets, is generally not a disposal, because you have not parted with ownership.

United States: short-term versus long-term

In the United States, the holding period decides how a gain is taxed. If you held the coin for one year or less before disposing of it, the gain is short-term and is taxed at your ordinary income tax rate, which for the 2025 tax year ranges from 10 percent up to 37 percent depending on your total income. If you held the coin for more than one year, the gain is long-term and qualifies for lower rates, generally 0 percent, 15 percent, or 20 percent for the 2025 tax year, again depending on your income. This gap is large, so the length of time you hold can meaningfully change your tax.

Two points catch many United States traders by surprise. First, crypto-to-crypto trades are taxable events. Swapping Bitcoin for Ethereum is treated as selling the Bitcoin at its fiat value that day, so a gain or loss is realized even though you never touched dollars. Second, as of the 2026 tax year the wash sale rule, which blocks claiming a loss when you rebuy a substantially identical security within 30 days, generally does not apply to crypto because crypto is treated as property rather than a security. That position could change through legislation, so verify the current status before relying on it. When using the calculator above for a United States disposal, enter your short-term ordinary rate for coins held a year or less, or your long-term rate for coins held longer.

United Kingdom, Australia, and other countries

In the United Kingdom, crypto disposals fall under Capital Gains Tax. Each individual has an annual exempt amount, which is 3,000 pounds for the 2024 to 2025 and 2025 to 2026 tax years, meaning gains up to that figure across all your capital assets are not taxed. Gains above the allowance are taxed at 18 percent if you are a basic rate taxpayer and 24 percent if you are a higher or additional rate taxpayer, following the change that took effect on 30 October 2024. Because the calculator does not subtract the annual exempt amount for you, enter only your taxable gain above the allowance, or enter the full gain and remember the first slice is covered by the allowance.

In Australia, crypto is a CGT asset. If you hold a coin for more than 12 months before disposing of it, individuals generally qualify for a 50 percent CGT discount, which halves the taxable gain before your marginal income tax rate is applied. A simple way to model this in the calculator is to enter an effective rate equal to half your marginal rate. Other countries vary widely. Canada taxes 50 percent of a capital gain at your marginal rate. Germany can exempt gains on crypto held longer than one year for individuals. Some jurisdictions apply no capital gains tax at all. Always check the rules for your own country of tax residence.

Worked examples

These examples show how the inputs and outputs connect. The numbers are illustrative and rounded for clarity.

Example 1: United States short-term gain

You bought 1 Bitcoin for 30,000 dollars and sold it six months later for 45,000 dollars. Because you held it for one year or less, the gain is short-term and taxed at your ordinary rate, which we will say is 24 percent. Enter Sale Proceeds 45,000, Cost Basis 30,000, and Your Tax Rate 24. Capital Gain is 15,000 dollars, Tax Owed is 3,600 dollars, Net After Tax is 41,400 dollars, Rate Applied is 24 percent, and Status is a gain. Holding a little longer to cross the one-year line could have moved this into long-term territory.

Example 2: United States long-term gain

You bought Ethereum for 20,000 dollars and sold it 18 months later for 50,000 dollars. Because you held it more than one year, the gain is long-term and qualifies for a 15 percent rate at your income level. Enter Sale Proceeds 50,000, Cost Basis 20,000, and Your Tax Rate 15. Capital Gain is 30,000 dollars, Tax Owed is 4,500 dollars, and Net After Tax is 45,500 dollars. Compared with the short-term example, the lower long-term rate is why the holding period matters so much.

Example 3: Australia with the 50 percent discount

You bought a coin for 8,000 Australian dollars and sold it 14 months later for 28,000 Australian dollars, a raw gain of 20,000 dollars. Because you held it more than 12 months, the 50 percent CGT discount applies, so only 10,000 dollars is taxable. If your marginal rate is 37 percent, a clean way to model this is to enter an effective rate of 18.5 percent, which is half of 37. Enter Sale Proceeds 28,000, Cost Basis 8,000, and Your Tax Rate 18.5. Capital Gain shows 20,000, Tax Owed is about 3,700 dollars, and Net After Tax is around 24,300 dollars, which matches applying 37 percent to the discounted 10,000 dollar gain.

Why tracking cost basis matters most

The calculator is only as accurate as your cost basis. If you underestimate what you paid, you overstate your gain and risk paying more than you owe. If you overstate it, you understate your gain and risk an incorrect return. Cost basis gets messy fast with crypto because coins are bought in many lots at different prices, earned through staking or airdrops, and moved between wallets. When you sell part of a holding, you must decide which units you sold, whether by first in first out, specific identification, or another method your rules allow, and that choice changes the cost basis. Keep a record of the date, amount, price, and fees for every acquisition and every disposal so you can produce a defensible figure.

Tips and common mistakes

• Log every disposal, including crypto-to-crypto swaps and crypto spent on purchases, not just sales to fiat.
• Record the fiat value at the moment of each trade, because that is what your gain is measured against.
• Keep acquisition fees in your cost basis and disposal fees where your rules permit, so you do not overstate the gain.
• Track your holding period per lot, since crossing a one-year or 12-month line can change your rate.
• Set aside an estimate of the tax as you realize gains, rather than being surprised by a bill later.

1. Assuming a swap between two coins is tax-free because no cash changed hands.
2. Forgetting that staking, mining, and airdrop income can be taxed when received and then taxed again on disposal.
3. Using a single blended cost basis when your rules require a specific lot method.
4. Ignoring small trades, which still count and add up across a busy year.
5. Applying a long-term rate to a coin you actually held for less than the required period.

The hardest part of crypto tax is rarely the arithmetic. It is having a complete, accurate record of every trade you made across a busy year. A clean trade log with the date, amount, price, and fees for each buy and sell turns a stressful reconstruction into a simple export. Keeping that log in OneTradeJournal as you trade means the numbers you enter into the calculator above are the real ones, and tax time becomes a matter of reading your own records rather than piecing them back together from exchange statements. Stay disciplined with your logging now, and verify your final figures with a professional when you file.