Can a VDA protect me from penalties and interest on past-due sales tax?

A VDA (Voluntary Disclosure Agreement) typically waives penalties. Interest on the back taxes is usually still owed. The combined benefit, penalty waiver plus a limited 3–4 year lookback that releases years of prior exposure, is the main reason VDAs are the standard resolution path for sellers with significant uncollected sales tax.

What penalties look like without a VDA

Sales tax penalties vary by state but commonly run 10–25% of the tax owed per filing period. For a seller who was supposed to file monthly and missed 36 months in a state, that’s 36 separate penalty charges, each calculated as a percentage of that month’s tax liability.

On top of per-period penalties, many states charge a failure-to-register penalty, a failure-to-collect penalty, or both, assessed as flat amounts or additional percentages of the total liability.

Interest accrues separately on the unpaid tax balance, typically at 0.5–1.5% per month (roughly 6–18% annually). On a multi-year back-tax balance, interest compounds.

Without a VDA, your total exposure is: unpaid tax + all penalties + all interest. For sellers who’ve been non-compliant for several years in multiple states, this number can be two to three times the underlying tax liability.

What a VDA removes from that calculation

Penalties: typically waived in full. The penalty waiver is the explicit benefit states offer in exchange for voluntary disclosure. You come to them voluntarily, agree to comply going forward, and they drop the penalty charges. This is the single biggest financial benefit of a VDA.

Lookback period: compressed to 3–4 years. If your actual exposure runs 7 years, a VDA typically limits settlement to 3–4 years of tax and interest. The earlier years are forgiven as part of the agreement. This lookback compression is often worth as much as the penalty waiver in total dollar terms.

Liability structure: defined and final. After a VDA closes, that period is settled. The state can’t come back later and reassess the same periods. You get a clean break.

What a VDA doesn’t remove

Interest on the back taxes within the lookback window. Interest is compensation for the time value of the money you should have remitted, most states treat it as distinct from penalties and don’t waive it. You’ll owe interest on the back taxes calculated within the agreed lookback window.

The underlying tax itself. The tax you should have collected and remitted is owed. The VDA compresses the lookback and removes penalties, it doesn’t reduce the actual tax liability for the periods it covers.

Going-forward compliance. As part of the VDA, you agree to register and file correctly from the VDA effective date forward. Failure to maintain compliance can void the agreement.

How the VDA process works

VDAs are state-specific. The general process:

1. Apply anonymously (optional in many states). Most states allow you to submit an anonymous inquiry first to understand the state’s terms before identifying your business. This is useful when assessing whether to proceed.
2. Disclose the business and the liability. Once you decide to proceed, you identify the business and provide a description of your nexus history and estimated liability.
3. Negotiate the terms. The state confirms the lookback period, confirms the penalty waiver, and calculates interest.
4. File back returns and pay. You file returns for every period in the lookback window and remit the agreed tax plus interest.
5. Register going forward. Your account moves into active compliance status from the VDA effective date.

The MTC multi-state VDA program

If you have exposure in multiple states (which most sellers with significant back-tax issues do) the Multistate Tax Commission (MTC) offers a coordinated multi-state VDA program. A single application covers participating states simultaneously, with consistent lookback terms negotiated through the MTC rather than state by state.

Not all states participate (California and Texas, among others, don’t participate in the MTC program and require separate VDAs). But for sellers with exposure in 5, 10, or 15 states, the MTC program dramatically reduces the administrative burden of resolving the prior period.

When a VDA isn’t available

A VDA requires that you come forward before the state contacts you. If any of the following have happened, the VDA window for that state is likely closed:

• You received a nexus questionnaire from the state
• You received a notice of assessment
• You were notified of an audit
• The state has already contacted you requesting records

If you’ve been contacted, the situation is no longer voluntary disclosure, it’s an audit or assessment response. At that point, engaging a sales tax attorney who handles state tax controversy is advisable before responding.