Short answer: we found 4 crypto tax firms with a confirmed Washington presence, listed first. Below them are firms that say they serve clients nationwide. We haven't verified licenses yet.
Firms with a Washington office
Colby Cross, CPA
Seattle office at 1255 Harrison St #304, Seattle, WA; crypto tax CPA practice (firm site)
License unverifiedWebsiteTaxman Associates
Office at 300 E. Pine St., Seattle, WA; crypto gains, cost basis, mining and staking income (firm site)
License unverifiedWebsiteAldaris CPA
Office at 9030 35th Ave SW, Seattle, WA; crypto compliance, cost basis, staking, 1099-DA review (firm site)
License unverifiedWebsiteGenuity B2B
Office at 7100 Fort Dent Way, Suite 100, Seattle, WA; crypto returns, amended returns, FBAR (firm site)
License unverifiedWebsite
National / remote firms
Chainwise CPA
Site says it helps clients "across the country". Not a Washington-specific office.
Mac Tax CPA
Summ partner list says services are offered in all 50 US states. Not a Washington-specific office.
Bitcounts
Site title: "Crypto Tax and Accounting Services in the US"; works remotely. Not a Washington-specific office.
Washington tax note
Per the Tax Foundation's 2025 state income tax table, Washington has no tax on wages; Washington taxes only capital gains income of high earners. Federal crypto reporting (Form 8949, Schedule D) applies everywhere.
Cities in Washington
Browse all cities. Doing it yourself? Compare crypto tax software or see the CoinLedger coupon.
Know a Washington crypto CPA? Get them listed. See all firms in the directory.
FAQ
Can an out-of-state crypto CPA prepare my Alabama return?
Many crypto firms work remotely. Ask whether they prepare Alabama state returns and confirm their license on CPAverify.