Free · Illustrative estimate · No signup
1099-DA Basis-Gap Calculator
For 2025, crypto brokers report gross proceeds but may omit your cost basis. Missing basis does not itself make the full proceeds taxable gain. Reconstruct your basis and report each disposition correctly on Form 8949/Schedule D; this tool illustrates the potential difference if $0 basis were reported instead.
Check the box above to view your illustrative estimate.
Estimate only - not tax advice. This calculator uses simplified illustrative rates and applies them to the full amount; it ignores other income, netting, AMT/NIIT, deductions, and actual bracket math. The optional NJ amount uses a marginal rate you select as a sensitivity input, not a default or flat-rate proxy. New Jersey taxes capital gains at ordinary-income rates under filing-status-specific graduated schedules and has its own loss-netting rules, so your NJ result may differ materially. Your real result depends on your full return. See our 1099-DA cost-basis review and consult a CPA before relying on these figures.
Written intake required
Want a CPA to reconcile the basis behind this estimate?
A written intake can describe the records-based review you are seeking. Calculator numbers are not sent through this link.
Continue with the written contact form to provide your name, email, and a brief description of what you need. A phone number is optional. Mention the 1099-DA Basis-Gap Calculator in that description if it is relevant.
Calculator inputs and results stay in your browser; this link does not submit them to Monaco CPA.
Continue to written intakeIf supplied, a phone number is used only for possible follow-up; it is not marketing or SMS consent.
Keep Exploring
Related tax tools
Compare another scenario or browse the complete library of free tax tools.
Tax advice disclaimer: This material is for general educational information only and is not legal, tax, or accounting advice for your specific facts. A CPA-client relationship is formed only through a signed engagement letter.