Do You Know What Your Accountant Did Last Tax Season?
I certainly didn't, and I'd been suspicious for years.
A particularly disturbing email exchange in early 2026 made it clear that my accountants didn't understand my business. Worse, for accountants who billed themselves as crypto tax specialists, they knew a lot less about crypto than I expected. When I dug in, I found far more problems than I'd imagined, in my taxes and in the CoinTracking account I thought my accountants were keeping up. I'm not an accountant, and most of us aren't. So I built cryptoBASIS to help other people find what we can't see on our 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?
If questions like these haunt you, cryptoBASIS can help.
How it works
Start with one
Add your files. Each one is checked free, before you pay.
Pay, and the check runs while you wait. Your files are held in memory only while it runs, then they're gone. Nothing is written to disk. We keep none of your files.
Download your results, locked with a password you choose. The download starts by itself. If it doesn't, use the Save or Download button on the results page. Your results stay on that page for four hours, then everything is cleared.
cryptoBASIS Return Check and CoinTracking Audit
We check your filed federal tax return, an individual's Form 1040 or an S corporation's Form 1120-S, against your CoinTracking files, then check your CoinTracking account itself, and show you what to fix.
See a sample reportThis check needs your CoinTracking Tax Report.
CoinTracking's pricing page says "Tax reports require a paid plan." So you'll need a paid CoinTracking subscription before you start.
CoinTracking: Pricing. Last checked 2026-10-17.
Make sure you have time to finish. We don't save anything you give us, so you can't save your progress and come back later. If you close or reload the purchase page, you'll start over. Once you've paid, your results stay on the page for four hours, then everything is cleared.
Start the return checkcryptoBASIS Load
If you don't use CoinTracking yet, we build a file from your exchange exports and public wallet addresses, with step-by-step instructions. You import it yourself.
You'll need a CoinTracking account to import your file.
CoinTracking's pricing page says "Every new account starts with a 7-day free trial that lets you import unlimited transactions", with no credit card.
After the 7 days, "new transaction imports also require a paid plan", and "Tax reports require a paid plan."
So if you want to import without paying, import your file within your first 7 days.
CoinTracking: Pricing. Last checked 2026-10-17.
New to CoinTracking? Create your account here. Signing up through this link gets you 10% off any CoinTracking upgrade you buy, and CoinTracking pays us a referral fee when you do. It's for new sign-ups only.
Make sure you have time to finish. We don't save anything you give us, so you can't save your progress and come back later. If you close or reload the purchase page, you'll start over. Once you've paid, your results stay on the page for four hours, then everything is cleared.
Start building my CoinTracking fileWe take our privacy and yours seriously. California law requires online sellers to publish a street address before taking payment. Therefore, due to California's privacy-invading disclosure laws, California residents are excluded from using our products.
cryptoBASIS is software. Its results are information, not tax, legal or accounting advice. Check them against your own records before you act.