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Tax, Cost Basis & ROI
Net Gain
BTC · After-Tax ROI: 52.84% · Holding Term: Long-term
Cash Kept
$30,598.25
Tax Drag
15.0%
Annualized ROI
32.7%
Capital Flow
Drop in a paystub, bank statement or screenshot — the AI reads it and fills these fields for you.
Portfolio Tracker is where this stops being a one-off number: keep your real balances there and the projection updates itself.
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Capital gains are not just “sell price minus buy price.” A professional estimate starts with cost basis, subtracts sale costs, classifies the holding period, then applies an estimated tax rate. The IRS explains the distinction between short and long term in Topic 409.
Track purchase fees and basis adjustments. The IRS notes that basis often starts with cost and related purchase expenses in Topic 703.
The calculator applies tax only when realized gain is positive; losses may have separate offset rules.
Holding period can change treatment. Use the term flag as a prompt to check local rules before selling.
The number that matters is after-tax cash kept, not the headline gain.
How-to guides that use this tool