The complete crypto tax guide

This is the site’s front door. If you are facing crypto tax seriously for the first time, resist the urge to hunt for a rate table — build the framework first. Most questions that look tangled unravel into the same few steps, and the steps travel surprisingly well between countries. What follows is the method we use ourselves when reconciling official guidance across four jurisdictions, with each detailed question handed off to its own page.

One thing up front: we never calculate what you owe, and we are not a substitute for a licensed professional. Crypto tax is YMYL territory — your money, your obligations. Our job is the framework and the sources; your number belongs to you and your adviser.

Step one: three rules that travel almost everywhere

Details diverge wildly between the UK, Australia, the US and Germany — but these three defaults hold across all of them, and across most developed tax systems. Apply them first, then look for the exceptions.

• 1. Holding is not taxed. Buy crypto with fiat and sit on it, and there is normally no tax obligation — even if it doubles. A paper gain is not a tax event; realising it is.
• 2. Disposing is taxed. The moment you dispose of a coin — sell it for fiat, swap it for another token, spend it — most countries settle its gain or loss against cost right then, under capital gains rules.
• 3. Earned coins are income. Tokens you did not buy but earned — staking rewards, airdrops, mining output, interest, payment for work — are usually taxed as income at market value on receipt, with a separate capital gain calculated when you eventually dispose of them.

Rule three is the one people miss. Eyes fixed on trading profits, they forget the tokens that arrived free were often taxable the moment they landed. For a gentler on-ramp to all three rules, start with How Bitcoin and crypto are taxed.

Step two: which operations trigger tax

Line up your year’s activity against this table. The middle column is the general tendency — that word carries weight, since edge cases and country differences are real. The right column points to the page that digs in.

Step three: cost basis and the actual maths

Once an event is a disposal, the calculation itself is one formula:

The formula is easy. Reconstructing the cost basis is not — especially once you have bought the same coin repeatedly at different prices. Which purchase’s cost attaches to the coins you just sold? The four countries answer differently:

• Pooling: the UK averages all purchases of a token into a Section 104 pool, adjusted by same-day and 30-day rules.
• FIFO / specific identification: the US defaults to first-in-first-out but permits specific identification with adequate records — and the two methods can produce very different numbers.
• Per-lot with a clock: Germany examines each coin’s holding period individually, so which lot sells first decides whether a gain is tax-free at all.

Different methods, one common dependency: complete records of date, token, quantity, fiat value at the time, and fees for every transaction. The systematic approach is in Keeping transaction records; for a quick feel for one disposal’s size, the capital gain estimator does the arithmetic (and nothing more).

Step four: capital gains vs income — keep the systems apart

Here is where most calculations go wrong. The same coin can pass through two entirely different tax systems at two moments:

• Capital gains: the profit against cost when you dispose of an investment. Often its own rates, its own allowance, sometimes a holding-period discount or exemption.
• Income: value that is taxable the moment you receive it — staking, airdrops, mining, interest, business-like trading. It joins your income tax at marginal rates.

The classic two-step: staking ETH earns you 0.5 ETH — income at that day’s market value. Three months later you sell it — a capital gain of sale price minus that same market value. Two taxes, two dates, and the cost basis must connect them. Blur the line and you will double-count or, more dangerously, under-report.

Step five: four countries, one screen

With the framework in place, what remains is “which defaults did your country override”. These are the sharpest forks — exact rates, allowances and yearly figures live on the country pages, each with its official sources and applicable year.

Step six: filing, records and time limits

After the maths comes the paperwork: which form, by when, and what evidence to keep. Country-specific, but four constants are worth fixing in memory:

• The forms differ: Self Assessment in the UK, Form 8949 / Schedule D and Schedule 1 in the US, the individual return in Australia, Anlage SO in Germany. Exact forms and deadlines on the country pages; walk-throughs in How to file, form by form.
• Records must outlive the filing: authorities expect supporting records kept for years (the number varies). Do not wait to be asked — exchange histories have a habit of becoming unavailable. See Keeping records.
• Exchanges now report you: as CARF and DAC8 take effect, platforms report account and transaction data to tax authorities automatically. “Nobody will know” is expiring on a published schedule — see CARF and automatic reporting.
• Cross-border stacks the rules: changed residency, US citizenship, obligations in two countries at once — see Moving countries with crypto.

The five classic mistakes

• “No cash, no tax” — coin-to-coin and stablecoin swaps are usually already disposals in the UK, Australia and the US. See stablecoins.
• Forgetting free coins are income — airdrops, staking, interest: often taxable on arrival, not on sale.
• Broken cost chains — after enough trades across enough exchanges, nobody can tell which lot was sold, and every gain figure inherits the confusion.
• Counting paper losses as deductions — unrealised losses generally deduct nothing, and theft or collapse losses are harder still. See losses & theft.
• Trusting software over inputs — tax software computes from what you feed it. Garbage in, garbage out. See choosing software.

FAQ

Official sources

• UK: HMRC, Cryptoassets Manual — gov.uk/hmrc-internal-manuals/cryptoassets-manual
• Australia: ATO, Crypto asset investments — ato.gov.au/…/crypto-asset-investments
• US: IRS, Digital assets — irs.gov/filing/digital-assets
• Germany: BMF letter on cryptoassets (updated 2025) — bundesfinanzministerium.de

Checked against the official pages on 1 September 2026. This page is framework-level by design; rates, allowances and thresholds move with policy and the authorities have the final word.