Paste your wallets. See your phantom gains. beta

It's the new IRS form for digital assets. Brokers already report gross proceeds — that started with 2025 transactions, and the first forms went out in early 2026. Starting with 2026 transactions they report cost basis too, and those forms land in early 2027. The problem: brokers only see their own slice of your activity. If you self-custody or use DeFi, the basis they report (or fail to report) may not match reality — and it's on you to reconcile the difference on your return.

No. Per the IRS instructions, a broker enters -0- in Box 1g only when the asset genuinely had a zero basis; a blank box means the broker did not report basis at all, usually because the asset is a noncovered security. Your real basis is whatever you can document under section 6001. The costly mistake is letting tax software import a blank as $0, which taxes the entire sale as gain rather than just your actual profit.

Because of how you acquired or held it. The instructions classify a digital asset as noncovered if the broker didn't have custody of it when it was acquired, if it was acquired before 2026, or if it was transferred into the broker from somewhere else, among other cases. Coins you bought in earlier years, moved between wallets, or earned in DeFi before sending to an exchange typically fall into one of these buckets, so the broker isn't required to report their basis and checks Box 9.

Yes. A missing basis figure doesn't remove your obligation to report the disposal and compute the gain yourself, generally on Form 8949. The broker still reports your gross proceeds in Box 1f, and the IRS sees that number. Leaving the basis blank on your return would let the full proceeds be treated as gain, so the task is to supply and substantiate your real basis. How to handle a specific reconciliation belongs with a qualified tax professional.

Never. You paste a public address and we read public blockchain data. There is nothing to sign, approve, or connect.