Crypto’s tax treatment includes a quirk that’s worth understanding if you actively trade: unlike stocks, cryptocurrency isn’t currently subject to the wash sale rule, which creates a tax-loss harvesting opportunity that doesn’t exist in traditional markets.
How the wash sale rule works for stocks, and why crypto is different
With stocks, if you sell a position at a loss and buy the same or a substantially identical security back within 30 days, the IRS disallows the loss for tax purposes. It’s designed to stop investors from harvesting a tax loss while keeping their market position essentially unchanged. Cryptocurrency, because the IRS currently classifies it as property rather than a security, isn’t covered by that rule. You can sell a losing position and buy it back immediately, with no waiting period, and still claim the realized loss.
How the math works
Say you bought Ethereum at $3,000 and it’s now trading at $2,000. Selling and immediately rebuying locks in a $1,000-per-coin loss that you can use to offset capital gains elsewhere in your portfolio, while your position size and market exposure stay exactly the same. On 10 ETH, that’s a $10,000 realized loss. At a 30% effective tax rate, that’s roughly $3,000 in tax savings, though your actual benefit depends on your specific bracket, your other gains and losses for the year, and how much of the loss you can use against ordinary income versus capital gains.
What to actually do with this
This is generally referred to as tax-loss harvesting, and institutional and high-net-worth investors have used versions of it with securities for decades, working around the 30-day wash sale window instead of avoiding it entirely. With crypto, there’s no window to work around. Losses need to be realized within the tax year to count, so if you’re sitting on unrealized losses, it’s worth reviewing your positions before year-end rather than after.
Tax rules around digital assets are still evolving, and there’s no guarantee the wash sale exemption for crypto stays in place indefinitely. Congress has floated closing this gap in past legislative proposals. Before you execute a tax-loss harvesting strategy, walk through your specific situation with a CPA who understands crypto taxation, particularly if you’re trading actively or holding a meaningful position.
Educational only, not tax, legal, or investment advice. Check primary sources and speak with a qualified professional before making financial decisions.
