Capital gains tax

Tax authorities almost universally treat bitcoin as property rather than money, a position the United States fixed in Notice 2014-21. That one choice makes four ordinary actions taxable: selling for cash, swapping for another coin, paying for something, and in some places giving it away. Buying and holding trigger nothing, so the liability you need to plan for arrives on the way out, not on the way in.

How it works

The arithmetic is the same everywhere: proceeds minus what the coins cost you equals the gain, and the gain is what gets taxed. The disagreement between countries is about the rate, the holding period, and the size of the free allowance.

The United States splits by holding period. Sell within one year and the gain is short term, taxed at ordinary income rates that reach 37 percent federally. Hold longer than a year and the long-term rates of 0, 15 or 20 percent apply, with a 3.8 percent net investment income surcharge at higher incomes and state tax stacked on top in most states. There is no exemption for small transactions, which is why buying lunch with bitcoin is technically a reportable disposal.

The United Kingdom pools instead. All units of the same asset go into one pool with a single average cost, gains above the annual exempt amount of 3,000 pounds are charged at 18 percent for basic-rate taxpayers and 24 percent above that, and the pooling rules are overridden for anything you buy back on the same day or within the following 30 days.

Germany runs the most distinctive regime of the three. Bitcoin held privately falls under the private disposal rules in section 23 of the income tax act, so a sale more than twelve months after purchase is free of tax regardless of size, while a sale inside twelve months is taxed at your ordinary income rate once total private disposal gains for the year exceed 1,000 euros. That threshold is a cliff, not an allowance: exceed it and the whole amount becomes taxable.

Several jurisdictions charge nothing on private capital gains at all, and a few tax crypto under separate rules that ignore the capital gains system entirely. The country pages on this site flag the local position, but a national tax office or a local accountant is the authority, not a glossary.

Why this matters when you buy bitcoin

Almost every decision that determines your future tax bill is made at the moment you buy, and it is invisible at the time.

Start with recordkeeping. A recurring buy of 100 units a week produces 52 separate acquisitions a year, each with its own date and price, and the holding period that decides your rate is measured per acquisition. Every platform in our exchange reviews can export a trade history; the ones built around scheduled buying, such as Swan, River and Relai, produce the longest lists. Export it annually and store it somewhere you will still have after you close the account, because exchanges shut down. LocalBitcoins closed in February 2023 and its users lost easy access to their own trade records.

Then think about where you buy and how long you intend to hold. If you live in Germany, the twelve month line in section 23 is the single most valuable feature of the whole system and it rewards doing nothing. If you live in the United States, the same patience moves you from a 37 percent ceiling to a 20 percent one. Anyone buying with a plan to hold for years is already choosing the cheaper tax treatment without noticing.

Finally, be careful with the actions that feel free. Swapping bitcoin for another coin is a disposal in most systems even though no ordinary money moved. Paying an invoice in bitcoin is a disposal. Moving coins from an exchange to a hardware wallet you own is not a disposal anywhere we are aware of, but it does sever the exchange's ability to work out your gain later, which is the practical argument for keeping your own records rather than relying on a broker statement.

One gain, three countries, three bills

The same trade produces wildly different outcomes depending only on where the taxpayer lives, and a worked case makes the spread obvious.

Take someone who bought bitcoin for 5,000 units of local currency and sold it fourteen months later for 15,000, a gain of 10,000, with no other disposals that year and no other complications.

In the United States, that is a long-term gain. A single filer with roughly 60,000 dollars of other taxable income sits in the 15 percent long-term band, so the federal bill is about 1,500 dollars, before any state tax.

In the United Kingdom, the 3,000 pound annual exempt amount comes off first, leaving 7,000 pounds chargeable. A basic-rate taxpayer pays 18 percent, or 1,260 pounds. A higher-rate taxpayer pays 24 percent, or 1,680 pounds.

In Germany, the holding period passed twelve months, so the private disposal is not taxable and the bill is zero.

None of this is advice for your situation, and every figure above depends on rates and thresholds that governments change in budgets. Treat it as a demonstration that residency, not the trade, does most of the work.

Capital gains tax vs an unrealized gain

Capital gains tax attaches to a disposal, and a rising price is not a disposal. If you bought at 30,000 and the market is at 90,000, you owe nothing on the 60,000 difference until you sell, spend or swap the coins, no matter how large the number gets or how many years it sits there. Proposals to tax unrealized appreciation surface periodically for very wealthy taxpayers, and none of them applies to ordinary bitcoin holders in the countries covered here. The corollary is the one people forget: an unrealized loss saves you nothing either, until you actually dispose of the position.

Capital gains tax vs cost basis

Cost basis is an input; capital gains tax is the output. Basis is the number you subtract, made up of the purchase price plus acquisition costs such as trading fees, and it belongs to a specific batch of coins. The tax is what the remainder is charged at, and it depends on your income, your residency and how long you held. Getting the basis wrong is the most common way people overpay: forget the fees, or lose the record of an early cheap purchase, and the gain you declare is larger than the gain you made.