AES-256 · Zero-Knowledge Architecture

Your compliance record, locked and permanent.

Taxero's Document Vault keeps every return, confirmation, report, and upload — encrypted, organized, and instantly retrievable when a state comes knocking.

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What lives in your vault

Every document Taxero generates or receives is automatically archived.

Taxero Vault — your documents
Filing confirmation #TX-2026-0847
Texas · Apr 2026
Nexus report Q1 2026
All states · Mar 31
Sales CSV — Shopify March 2026
Uploaded Apr 2, 2026
State correspondence — Michigan DOR
Received Mar 15
4 documents · Encrypted at rest · Never deleted

No manual uploads. No lost emails.

Every document Taxero generates or receives on your behalf is automatically archived. Just a permanent record, organized, searchable, and ready when you need it.

Filing confirmations with state-issued reference numbers
Nexus exposure snapshots every quarter
Every CSV you import, raw and normalized
State correspondence and audit notices

Security architecture

Enterprise-grade. Purpose-built for compliance records.

AES-256 encryption at rest

All documents encrypted with AES-256. In transit, everything travels over TLS 1.3. Your data is never readable in plain text, not even by us.

Row-level isolation

Row-level security means your data is completely isolated. No user can access another account's documents — even with the record ID.

Audit logging & access controls

Every access event is logged. Role-based access controls and audit trails mean you always know what happened to your data and when.

When a state audits you

With Taxero's vault, an audit goes from stressful to straightforward.

1

State sends audit notice

A state revenue department sends you an information request or formal audit notice.

2

You forward it to Taxero

One email. Upload the notice to your vault or send it to your account manager.

3

We pull every relevant document instantly

Every filing confirmation, nexus report, and source CSV for the audit period is retrieved from your vault in seconds.

4

We prepare your response package

A complete, audit-ready document package, organized by period, state, and document type.

5

You review and submit

Review the package, approve it, and we coordinate the submission to the state.

What's archived automatically

Every record. Every time. No exceptions.

Return filings with confirmation numbers
Nexus exposure reports by quarter
Raw sales CSV files (all platforms)
Rate calculation worksheets
State correspondence log

Audit-ready from day one.

Every filing archived automatically. No manual exports, no folder juggling, no scrambling when you get a notice.

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