Centralize credentials, certificates, filings evidence, and nexus signals in one secure workspace. Connect the systems you already use to stay audit-ready as your business, providers, and rules change.
Stop searching through emails and spreadsheets.
Know exactly where you're registered and access any state portal in seconds. No more hunting for passwords or wondering about filing frequencies.
Track registration IDs, effective dates, filing frequencies, and status for every state where you're registered.
Store DOR portal usernames, passwords, and security questions with AES-256 encryption.
One-click access to any state's DOR portal. We maintain links to all 50 states plus DC.
Sales Tax Vault becomes your system of record by connecting to the tools where compliance data already lives. Use connections to surface physical and economic nexus signals, keep filings evidence and certificates organized, and stay audit-ready even as your team or systems change.
Common connection categories:
Tax automation (available now): Avalara AvaTax
Connect your Tech Stack
Physical and economic nexus signals
Potential Nexus Risk
2 states have nexus signals but no registration
Track physical and economic nexus signals in one unified view. Connect the systems you already use to surface employee, inventory, ship-from, and sales threshold indicators by state, so you can spot risk early and stay ahead of registration requirements.
Track employees, contractors, inventory locations, and property by state
Monitor sales volume and transaction counts against state thresholds
Flag potential exposure when nexus signals appear without a registration on file
Nexus requirements vary by state. Sales Tax Vault highlights signals and thresholds to support your compliance decisions.
Stop chasing customers for certificates. Keep exemptions audit-ready.
Collect, track, and manage exemption certificates in one place. Built-in checks flag missing fields and common issues so your exemption file stays audit-ready without constant back-and-forth.
Uploaded certificates are checked for completeness, flagging missing signatures, incorrect forms, and expiration issues for review.
Customers can submit their own certificates through a branded portal, reducing back-and-forth.
When connected to your tax automation system, certificates can sync automatically so your records stay aligned.
Track expiring and expired certificates so renewals do not get missed.
| Period | Tax | Status |
|---|---|---|
| Nov 2025 | $2,847.32 | Confirmed |
| Oct 2025 | $3,129.85 | Confirmed |
Pull up confirmations instantly, without digging through emails.
See what was filed, when, and for how much. Store confirmations and supporting PDFs in one place, and optionally sync evidence from your tax automation system.
View filing amounts, remitted amounts, and filing dates for every state and period.
For connected accounts, filings evidence can sync from your tax automation system.
Generate periodic reports for filing status and evidence coverage by state.
Document how products are classified, track changes over time, and stay audit-ready.
Import your product catalog, document taxability decisions by state, and keep the "why" behind each decision in one place. Stay consistent as products, rules, and systems change.
Upload products by CSV. Sales Tax Vault matches by SKU and updates existing items while flagging new products that need a decision.
Assign products to operational tax categories so teams can review consistently and avoid scattered spreadsheets.
Store tax codes alongside product decisions and export a mapping file for upload to your tax engine. If you do not use a tax engine, use the register as your internal taxability record.
Capture who made each decision, when it changed, and why. Reopen items for review without losing the history.
Categories are used for internal organization and consistency. Final tax treatment depends on jurisdictional rules and your configured tax systems.
Export your taxability register to keep your tax engine and internal records aligned.
Find years of compliance evidence in seconds when an auditor calls.
Store compliance evidence in one secure place, organized by state and category: registration letters, nexus studies, VDAs, notices, and more.
Documents are encrypted at rest and in transit, with tenant-safe access controls.
Keep documents organized however works best for you. Quick search finds what you need.
Download the right evidence quickly when it matters.
Storage limits vary by plan (5-25GB).
Get the combined rate and jurisdiction breakdown for any US address.
Look up sales tax rates for any US location and see the full jurisdiction breakdown. Use results to support taxability decisions, audits, and internal handoffs.
Enter a full street address to get the precise combined sales tax rate for that exact location.
See state, county, city, and special district rates separately. Understand exactly where the tax comes from.
Select a product category to view rate variations and special rules where available. Final taxability depends on jurisdiction rules and your configured tax systems.
Rates are provided for reference. Final tax treatment depends on jurisdiction rules and your configured tax systems.