Crypto Tax FAQ: US & UK Questions Answered
A crypto tax FAQ covering the questions we get asked most — general rules, IRS specifics, HMRC specifics, and how the calculator itself works.
Note: I'm a developer, not a tax professional. These answers are researched from IRS.gov and GOV.UK (linked throughout) but haven't been reviewed by a CPA. Verify against official guidance before filing.
1. General Crypto Tax Questions
This crypto tax FAQ starts with the questions that apply regardless of where you live, before getting into US and UK specifics further down the page.
Do I have to pay tax on cryptocurrency?
In most cases, yes. Both the IRS and HMRC treat crypto as property, so gains from selling, swapping, or spending it are generally taxable, and income like staking rewards is taxed separately. See the Crypto Capital Gains Tax Guide for the full breakdown.
Is crypto taxed the same way everywhere?
No. Tax treatment varies significantly by country. This site focuses on the US and UK systems specifically, since they have different rates, allowances, and cost basis rules. Always check the rules for your own country of tax residence.
What counts as a taxable event for crypto?
Selling crypto for fiat, swapping one crypto for another, spending crypto on goods or services, and earning staking or mining rewards are all generally taxable events. Simply buying and holding, or transferring between your own wallets, is not.
Do I owe tax if my crypto lost value?
No tax is owed on a loss itself. In fact, realized losses can typically offset gains, and in some cases other income, which is the basis of tax loss harvesting. You only owe tax on realized gains.
How do I calculate how much crypto tax I owe?
You need your cost basis, disposal proceeds, and holding period for each transaction, then apply the applicable rate. Our free calculator handles this estimate for both US and UK rules, entirely in your browser.
2. US & IRS Crypto Tax Questions
How is crypto taxed in the US?
The IRS treats crypto as property under Notice 2014-21. Capital gains apply when you dispose of it, taxed at short-term (ordinary income) or long-term rates depending on your holding period. Staking and mining rewards are taxed separately as ordinary income when received.
What tax forms do I need for crypto?
Most US taxpayers report crypto disposals on Form 8949, with totals flowing to Schedule D. Staking or other ordinary income is reported separately. Some transactions may also generate a Form 1099-DA from your broker starting with the 2025 tax year.
Do I need to report crypto if I didn't sell?
If you only bought and held, there's typically nothing to report for capital gains. However, if you received staking rewards, mining income, or an airdrop, that may be taxable as ordinary income even without a sale.
What happens if I don't report crypto gains?
The IRS can assess penalties and interest on unreported gains, and increased broker reporting (via Form 1099-DA) makes unreported activity easier to detect. See What Happens If You Don't Report Crypto Gains? for the full penalty structure.
Does the wash sale rule apply to crypto in the US?
Not currently. The wash sale rule applies to securities, and crypto is classified as property, so selling at a loss and immediately rebuying isn't disallowed today. See the Crypto Wash Sale Rule guide for details and possible future changes.
3. UK & HMRC Crypto Tax Questions
How is crypto taxed in the UK?
HMRC generally applies Capital Gains Tax to crypto disposals, at 18% (basic rate) or 24% (higher rate), and Income Tax to staking rewards and similar income. There is no separate "crypto tax" — existing CGT and Income Tax rules apply to cryptoassets.
What is the UK Annual Exempt Amount for crypto?
The Annual Exempt Amount (AEA) is the amount of capital gains you can realize each tax year before Capital Gains Tax applies. It's currently £3,000 for individuals, applied automatically in our UK calculator mode.
Do I pay tax on crypto staking rewards in the UK?
Generally yes, as miscellaneous or trading income at the point you receive the reward, valued at fair market value. See the full UK Crypto Staking Tax guide for HMRC's exact treatment.
What are HMRC's same-day and 30-day matching rules?
These are cost basis matching rules unique to the UK. A disposal is first matched against crypto bought the same day, then against crypto bought in the following 30 days, and only after that against the Section 104 pool of all remaining holdings.
Do I need to file a Self Assessment for crypto?
If your crypto gains exceed the Annual Exempt Amount, or you have crypto income to declare, you'll generally need to report it through Self Assessment. Check GOV.UK's current filing thresholds for full detail.
4. Calculator & Privacy Questions
Is the CryptoTaxSentry calculator accurate?
It's built to reflect current IRS and HMRC rates and rules, and is designed as an educational estimate rather than a filing-ready figure. Always confirm final numbers with a qualified tax professional before filing.
Does the calculator store or upload my data?
No. All calculations run entirely in your browser using JavaScript. Nothing you enter is sent to a server or stored anywhere — close the tab and it's gone. See our How the Calculator Works page for the full explanation.
Can I use the calculator for both US and UK taxes?
Yes. Toggling between USA and UK mode switches the rate structure, currency symbol, and allowance rules automatically — including the UK's fixed CGT bands and Annual Exempt Amount.
Is this calculator a substitute for professional tax advice?
No. It's an educational tool to help you understand roughly what you might owe and how the underlying rules work. For your actual filing, work with a CPA, enrolled agent, or UK accountant — see our Editorial Policy for how we handle accuracy and disclosure.