BasisDA Check my 1099-DA
IRS Form 1099-DA · 2025 tax year · gross proceeds only

Your 1099-DA shows gross proceeds. See what you actually owe.

For 2025, crypto brokers report gross proceeds only — no cost basis. That can make the IRS see a number far bigger than your real gain. BasisDA shows you the gap and what to reconcile before you overpay.

Check my 1099-DA Why the number looks wrong
Runs in your browser No wallet connect
The problem

Year one reports the big number, not your gain

The first 1099-DA covers 2025 and reports gross proceeds only. Cost basis is on you. If you don't reconcile it, the reported figure can look like pure profit.

2025

Gross proceeds only

For the 2025 tax year, brokers are required to report gross proceeds only. Cost-basis reporting begins for transactions on or after January 1, 2026. [2][3]

The IRS sees the same figure

Your exchange files the form with the IRS and sends you a copy. If your return doesn't reconcile basis, the mismatch is on the IRS's desk. [3]

No form ≠ nothing to report

Even if you never receive a 1099-DA, you still must report every taxable digital-asset transaction on your return. [4]

How it works

From the form's big number to your real gain

Everything runs in your browser — no account, no wallet connect, no upload.

Enter the gross proceeds

Type the box-1 figure from your 1099-DA (Coinbase, Kraken, Gemini and other custodial brokers).

Add your cost basis

BasisDA subtracts what you actually paid and flags lots the broker couldn't cover, so nothing is double-counted.

See your real taxable gain

With Pro, an itemized reconciliation and a checklist to carry into your return or hand to your accountant.

Pricing

Check for free. Reconcile for $4.

Free

$0
  • Gross vs. real-gain calculator
  • Plain-English 1099-DA explainer
  • Links to the official IRS guidance
  • Itemized reconciliation
  • Exportable filing checklist (PDF)
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  • Exportable filing checklist (PDF)

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FAQ

What crypto filers keep asking

Why is the number on my 1099-DA so high?
Because for the 2025 tax year brokers report gross proceeds only — the total you sold for, not your gain. Your cost basis (what you paid) isn't on the form yet, so the figure looks far bigger than what you actually made. Source: CNBC. [1][2]
When does cost basis start showing up?
For transactions made on or after January 1, 2026, brokers must also report cost basis for covered digital assets held within the same broker account. The 2025 form is the transition year without it.
Do you connect to my wallet or exchange?
No. You type the figures from your own 1099-DA and records. Everything is calculated in your browser — no wallet connect, no upload, nothing leaves your device.
Is this tax advice?
No. BasisDA is an educational reconciliation tool, not tax or legal advice, and it isn't affiliated with the IRS. For your specific situation, confirm with a qualified tax professional.
Sources

Where every claim comes from

Every figure on this page links to its original source. Check it yourself.

1
CNBC — IRS Form 1099-DA rules raise the stakes for crypto tax reporting (Aug 2026)Why year-one gross-proceeds reporting inflates the visible figure.
2
Thomson Reuters — Form 1099-DA Debut: Transition Year2025 as a gross-proceeds-only transition year.
3
H&R Block — What Is Form 1099-DA?Who files, who receives a copy, and the cost-basis timing.
4
TurboTax — Form 1099-DA and what it means for crypto investorsYou must report taxable transactions even without a form.

Don't pay tax on money you never made.

Reconcile your 1099-DA gross proceeds against your real cost basis in a minute. Free to start.

Check my 1099-DA