cryptoBASISCheck my return

Do You Know What Your Accountant Did Last Tax Season?

I certainly didn't, and I'd been suspicious for years.

In early 2026, an email made it clear my accountants, self-described crypto tax specialists, didn't understand crypto. When I dug in, I found problems in my taxes and in the CoinTracking account I thought they were keeping up. So I built cryptoBASIS to help others see what they can't on their own.

  • Do you really know your CoinTracking reports are correct?
  • Was your wallet-by-wallet migration done right?
  • Does the gain on your tax return match the gain in your CoinTracking Tax Report?
  • Are transfers between your own wallets showing up as sales?
  • Are coins you sold carrying a cost of zero?
  • Is the digital asset question on your return answered, and does it fit your Form 8949?

If questions like these haunt you, cryptoBASIS can help.

How it works

  1. Choose your checkPick one below.
    • No account to make.
  2. Add your files
    • Each one is checked before you pay, only to confirm we can use it.
    • Read in memory, never kept.
  3. Pay
    • The check runs while you wait.
    • Your files are held only for the run.
  4. Get your results
    • They download as soon as they're ready, locked with your password.
    • On this page for four hours, unless you close or reload it.
    • We keep none of your files.

Choose your check

Make sure you have time to finish. We save nothing. Before you pay, we show you what not to do, and what each costs.

cryptoBASIS Return Check Basic

  • Your filed return: its math re-run line by line, the figures carried between forms, including Form 8949 and Schedule D, and the digital asset question.

You upload: your filed return (Form 1040 or 1120-S, as a PDF).

You can upgrade later with the code on your results: $20.00 through 2027-01-31, or $39.99 after that, until 2027-10-15.

$9.99Introductory price until 2027-01-31

Check my return

cryptoBASIS Return Check Advanced (includes a Tax Report tie and audit for CoinTracking)

  • Your filed return: its math re-run line by line, the figures carried between forms, including Form 8949 and Schedule D, and the digital asset question.
  • Your Form 8949 and Schedule D totals tied to your CoinTracking Tax Report.
  • Transfers between your own accounts recorded as trades, and sales with no purchase cost.
  • Your Tax Report's sale totals against your trade list.
  • The prices and cost method your Tax Report used, and the 2025 move to tracking cost per wallet.

You upload: your filed return, your CoinTracking Tax Report and your trade list.

You'll need a paid CoinTracking subscription: CoinTracking says "Tax reports require a paid plan."

See a sample report

$29.99Introductory price until 2027-01-31

Check return + CoinTracking

California residents are excluded from using our products.

cryptoBASIS is software. Its results are information, not tax, legal or accounting advice.