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Your 1099-DA from Crypto.com shows what you sold and the proceeds. But for many transactions (especially older ones or assets transferred from another wallet), the cost basis may be blank or $0. Here’s how to fix that before you file.
Why Cost Basis Goes Missing on Crypto.com
For the 2025 tax year, brokers like Crypto.com were required to report gross proceeds on Form 1099-DA, but not cost basis. That requirement doesn’t kick in until the 2026 tax year. So your 1099-DA tells the IRS what you sold and for how much, but not what you paid.
Cost basis can also be missing when:
- You transferred crypto to Crypto.com from another wallet or exchange
- You received crypto as a gift, airdrop, staking reward, or hard fork
- The original purchase records are incomplete or held by a different platform
If you file with $0 cost basis, you’ll pay taxes on the full sale amount, not just your actual gain. That’s a costly mistake.
Step 1: Download Your Full Transaction History from Crypto.com
Log in to the Crypto.com Exchange or App.
- Go to Wallet > Transaction History (Exchange) or tap Accounts > Transaction History in the App.
- Filter by the relevant tax year.
- Click Export and download the CSV file.
For the App, you can also access tax reports under Settings > Tax if available in your region.
Step 2: Reconcile with Summ’s 1099-DA Portal
Once you have your records, upload your Crypto.com 1099-DA to Summ. Summ automatically matches your transactions to what’s reported on your 1099-DA, so you can see exactly where cost basis is present, where it’s missing, and what needs to be resolved.
For any gaps, Summ guides you step-by-step to either supply the missing data or flag the transaction appropriately before you file.
Step 3: Generate Your Tax Report and File
After reconciliation, generate your tax reports through Summ. Your capital gains calculations will reflect accurate cost basis, not $0, so you’re not overpaying the IRS.
Start here: Open the 1099-DA Portal in Summ
Log in or sign up to review your Crypto.com trades and 1099-DA.
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