Crypto taxes: the basic principles that work almost everywhere

Tax rules vary by country, but most jurisdictions have converged on a common logic. Knowing it is useful regardless of your passport (and the details belong to a local tax adviser - we are not lawyers).

Universal principles

• The taxable event is disposal. Buying and holding are usually untaxed; tax arises on sale, on exchange (including crypto-to-crypto in many countries), on paying for goods.
• Base = sale price minus purchase price. Hence the holder's main duty - keep records of entries: without a purchase history the tax office may deem your base to be zero.
• Income is separate. Staking, mining, airdrops in many jurisdictions are income at market value at receipt, not capital gains.
• The holding period can change the rate: several countries exempt or reduce tax on long holds.

Mistakes that cost dearly

First - "the exchange does not report, so it is invisible": data exchange between venues and tax authorities expands every year, and the blockchain remembers everything - retroactively. Second - ignoring crypto-to-crypto trades: a memecoin swap can be a taxable event even if fiat was never touched. Third - losing the history: a dead exchange takes your entry-price records with it - export regularly.