Crypto Tax Calculator 2026 — Calculate Cryptocurrency Capital Gains Tax

Cryptocurrency taxes can be confusing, but a crypto tax calculator simplifies it. For 2026, you’ll need to account for capital gains, short-term vs. long-term rates, FIFO cost basis, and wash sale rules. Here’s how it works, with examples to help you estimate your tax liability.

Short-Term vs. Long-Term Capital Gains

Crypto held for less than a year falls under short-term capital gains, taxed at your ordinary income rate. For example, if you bought $5,000 of Bitcoin and sold it for $8,000 after 6 months, your $3,000 gain could be taxed at 24% (assuming that’s your income bracket), leaving you with a $720 tax bill.

Hold crypto for over a year, and it qualifies for long-term capital gains rates, which are lower. Using the same example, if you sold after 18 months, the $3,000 gain might be taxed at 15%, reducing your tax to $450.

FIFO Cost Basis and Wash Sale Warnings

The IRS defaults to FIFO (First In, First Out) for cost basis unless you specify otherwise. Say you bought 1 BTC for $10,000 and later bought another for $15,000. If you sell 1 BTC, FIFO assumes you sold the first one, so your cost basis is $10,000.

Wash sale rules (currently not applied to crypto but proposed for 2026) could complicate things. If you sell crypto at a loss and repurchase it within 30 days, the loss might be disallowed. For instance, selling Ethereum at a $2,000 loss and buying it back within a week could make that loss ineligible for deduction.

Reporting Requirements

The OBBBA (Operation Badge Bunny Bad Actors Act) introduced stricter reporting for 2026. Exchanges must report transactions over $600, and you’ll need to reconcile these with your tax filings. Missing a $1,000 transaction could trigger an audit, so accuracy is key.

Using a crypto tax calculator ensures you account for all these factors. Enter your transactions, and it’ll calculate gains, losses, and taxes owed, saving you hours of manual work.

Full breakdown: https://returnmytax.com/crypto-tax