Security & privacy

Tax documents are among the most sensitive files people store online. BasilTax treats them that way: minimize what models see, encrypt in transit, and never sell your data.

SSNs never reach the model

Before any document text is sent to an LLM for structured extraction, we run redact_pii() on the server to mask Social Security numbers, labeled account numbers, and similar patterns. Employer EINs are preserved where tax logic requires them.

Responses are filtered too

Assistant outputs are scanned again; anything resembling PII is blocked from storage and display where possible.

No training on your return

Your documents are not used to train third-party foundation models. They are processed for your account only.

Share links (optional)

When you generate a public share link for an audit trace, viewers see a redacted payload (masked filenames and values). Links expire automatically.

Subprocessors & DPA

We use industry-standard cloud and AI APIs required to operate the product. Enterprise customers may request a Data Processing Addendum (DPA) — contact your legal / security contact at BasilTax.

SOC 2

Roadmap: formal SOC 2 Type II as we scale enterprise workflows.

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