Reverse Sales/Use Tax Audit (overpayment recovery)

Service description

A specialist reviews the business's past sales and use tax payments, looking for tax it paid on purchases that were exempt, paid twice, or charged at the wrong rate. It then files refund claims with the state or, where a state requires it, seeks the refund from the seller. Because these rules are set state by state, the review covers each state where the business bought goods or paid tax.

Common industries

Any business that buys in volume, especially manufacturers, contractors and multi-location operators.

ROI

A pure recovery play with little downside — fees are typically tied to what's actually recovered, so it turns a compliance cost center into cash back.

Benefit

A specialist reviews your past sales- and use-tax payments to find and recover amounts you overpaid, then files the refund claims.

Why get it

Sales tax is easy to overpay: tax gets charged on exempt purchases, paid twice, or applied at the wrong rate, and it is rarely caught without a review. Recoverable money can sit unclaimed until a refund window closes.

When you benefit

Usually a one-time review of past periods, repeated if purchasing changes a lot. Each state limits how far back a refund can be claimed.

What it costs

Contingent on refunds recovered.

When you pay

Often a percentage of the refund actually received, so the provider is paid only after the state approves and pays the claim. Some providers charge a flat or hourly fee for the review instead, billed as the work is done.

Other costs

None beyond the provider's fee, other than staff time to gather invoices and exemption documents.

Risks to know

A refund claim can prompt the state to audit the same periods, which may turn up tax the business owes as well as tax it overpaid. Claims that lack invoices or valid exemption support are usually denied. Each state sets its own deadline for claiming a refund, and once it passes the overpayment can't be recovered.

When risks arise

Deadline risk builds steadily: each month that passes can push older payments past a state's refund window. Audit risk arrives after a claim is filed, once the state begins reviewing it.

The process

The provider reviews purchase and tax records to find overpayments, and the business confirms the findings and approves each claim. The provider prepares and files refund claims with each state, or with the supplier where a state requires that, and answers any state questions. Refunds are paid to the business, and the provider's fee is calculated from what is recovered.

Your commitment

The business gives the provider purchase invoices, its sales and use tax returns, and any exemption certificates it holds or issued, and makes its accounts-payable and tax staff available for questions. It should say which states and periods to review and mention any audit already open in those states.

Documents to gather

• Purchase invoices and vendor lists for the periods under review
• Filed sales and use tax returns, including any use tax self-assessment schedules
• Exemption and resale certificates the business holds or has issued
• Reports or correspondence from any prior state sales tax audit

Helpful reading

• Sales and Use Tax Reverse Audits — Journal of Accountancy
• Sales Tax Definition | TaxEDU Glossary — Tax Foundation