Bitcoin tax tools for self-custody holders. Review outputs carefully and do not paste sensitive identifiers.
Enter your salary + expenses. See what you ACTUALLY paid the state last year, including hidden taxes. Then see what that would've been in Bitcoin over 10 years. Sobering.
Calculate My Tax Bill →Paste your BTC buys/sells. Get FIFO/LIFO/HIFO cost basis side-by-side, IRS Form 8949 export, and federal tax estimate. No account needed.
Open Calculator →Audit the cost-basis math behind the calculator. Public repo with FIFO/LIFO/HIFO logic and tests for self-custody Bitcoiners.
View GitHub Repo →Paste your transaction history. Get a CPA-ready review of possible TLH candidates from the last 3 years, current lots to review, and questions to bring before making any tax move.
Find My Missed Savings →Got an IRS notice about Bitcoin? Paste the notice body and get a structured response draft, citation checklist, and supporting-document list for CPA or tax-attorney review.
Generate My Response →Offline Bitcoin recordkeeping bundle: cost-basis tracker, sats stacking tracker, and holder worksheets for cleaner tax-season records.
Get the Toolkit →