AI tax preparation software uses artificial intelligence to read a client's source documents — W-2s, 1099s, K-1s, brokerage statements, prior-year returns — and either draft the return or review a prepared one, catching errors and surfacing optimizations. The best systems are document-first: they validate that the numbers on the return match the underlying documents, not just that the math is internally consistent.

Filed is purpose-built for accounting firms. It prepares and reviews 1040, 1041, 1065, 1120, 1120-S, and 990 returns inside the tax software your team already uses, with a full audit trail on every entry. Read our complete guide to AI tax preparation.