Cryptocurrency Cost Basis and Taxable Event Tracking

Cryptocurrency trading requires meticulous cost basis tracking across exchanges and wallets, with staking and mining income taxed immediately regardless of subsequent price changes.

The IRS treats crypto as property, not currency. This means every disposal -- selling for dollars, swapping one coin for another, spending crypto on a purchase -- is a taxable event that must be reported. The gain or loss is calculated the same way as selling stock: proceeds minus cost basis. If you made dozens or hundreds of trades across multiple exchanges, tracking becomes a serious burden.

Staking and mining income are taxed immediately. Tokens received from staking rewards or mining are ordinary income valued at fair market value the moment you receive them. You owe tax on that income regardless of whether you sell the tokens. When you later sell, any change in value from the date received creates a separate capital gain or loss.

Cost basis tracking is the core challenge. Unlike brokerages that issue consolidated 1099s, crypto exchanges have historically provided incomplete or inconsistent reporting. Starting with 2025, exchanges must issue Form 1099-DA, but cross-exchange and DeFi transactions may still require manual tracking.

The pitfall: Many crypto holders discover at tax time that they owe more than expected because they didn't track basis on token-to-token swaps throughout the year. Retroactive reconstruction is possible but expensive and imprecise.