We classify record complexity. We do not predict tax risk.

What the free diagnostic uses

The diagnostic starts with the problem you report—such as missing basis, transferred assets, a broker/software mismatch, an unexpected form, incorrect information, a missing form or stablecoin reporting—plus the platform involved. It then considers four record-complexity factors: number of platforms or wallets, transfer complexity, completeness of acquisition history, and DeFi or smart-contract activity. The result routes you to records and educational guidance to check first.

What it does not output

• No 0–100 “1099-DA mismatch risk score.”
• No “estimated missing cost basis exposure.”
• No audit probability.
• No estimated tax owed, refund, penalty or legal conclusion.
• No statement that a broker form is correct or incorrect.

Why we don’t use tax-risk scores

A percentage score could look more certain than the available records justify. Estimating missing cost basis in dollars would require verified lot-level acquisition records, not a short screening form. Instead, 1099-DA Check helps you identify which source documents to compare and where the record trail may need reconciliation.

Source hierarchy

1. Current IRS regulations, instructions, notices and taxpayer guidance.
2. Current platform help documentation for platform-specific workflow.
3. Search-demand and community discussions only to identify questions—not to establish tax rules.

Update policy

Material tax-rule, platform-documentation and technical-site changes are reviewed on a recurring authority cycle. Each guide shows a modified date, and time-sensitive pages state the applicable tax year.