The IRS checks this one thing first on every crypto return
Cost basis. Every time. When the IRS reviews a crypto return, they go straight to one question: "Can you prove what you paid for this asset?" If you can't, they default to $0 β which means your entire sale proceeds become taxable gain. Here's what I see constantly as an EA: β Investor buys 1 ETH for $2,000 in 2023. Sells for $3,500 in 2025. β Actual gain: $1,500. Tax owed: $225 (at 15% LTCG rate). β Missing records? IRS assumes cost basis = $0. Tax owed: $525. β That's $300 extra in taxes β on a single trade. Multiply that across 50, 100, or 500 transactions and you see the problem. The fix is simple but most investors skip it: β
Export your full transaction history from every exchange you've used β
Choose your cost basis method (FIFO, HIFO, or specific ID) and stick to it β
Document it β not just in your head, but on paper the IRS can see After Big Four tax work at EY and PwC, this is still the #1 fixable mistake I see on crypto returns. Drop your question below π β what exchange or wallet is giving you the most headaches with records? β Samuel Oduro, EA | Empower Capital | empowercapital.co