A New Jersey sales tax audit can leave a business facing thousands of dollars in additional tax, penalties, and interest. Even owners who believe they filed every return correctly can run into trouble if their records do not support their reported sales.

The New Jersey Division of Taxation may compare sales tax returns with POS reports, bank deposits, payment processor records, supplier purchases, and other information. If records are missing or unreliable, the state may estimate taxable sales. The estimate may be far higher than the actual sales.

The good news is that an audit assessment can be reviewed and challenged. Good records and experienced representation can make a substantial difference.

Why Does New Jersey Audit a Business for Sales Tax?

New Jersey generally imposes a 6.625% sales tax on taxable retail sales and certain services. Businesses making taxable sales must collect and remit the tax. The Division audits businesses to determine whether the amount reported and paid was correct.

An audit does not necessarily mean that a business is suspected of fraud. But filing all required returns does not mean the auditor must accept the reported amounts without supporting records.

What Records Will the Sales Tax Auditor Request?

The requested documents depend on the business, but they often include:

• Sales tax returns, income tax returns, and supporting worksheets
• POS reports, cash register tapes, invoices, and daily sales summaries
• Bank statements, credit card settlements, and payment processor reports
• General ledgers and bookkeeping records
• Supplier invoices and inventory or merchandise purchase records
• Refund, discount, return, and canceled-transaction records
• Resale certificates and other sales tax exemption documentation

The auditor may reconcile sales across different sources. A deposit that is not a sale, such as a loan, owner contribution, or transfer between accounts, should be identified and documented rather than counted as taxable revenue.

Can New Jersey Estimate Sales if Records Are Missing?

Yes. When a business cannot substantiate its sales, the Division may use indirect methods, including supplier purchases and estimated markups, to reconstruct revenue.

For example, suppose a store bought $400,000 of merchandise and the auditor applies a 50% markup on cost. That produces estimated sales of $600,000. If the store reported $450,000, the auditor may question a $150,000 difference. At 6.625%, that difference represents $9,937.50 of potential additional sales tax, before penalties and interest, assuming the entire difference is taxable.

But the calculation may overlook spoilage, returns, theft, markdowns, sales of exempt products, or a different mix of merchandise. We review the underlying assumptions instead of accepting a markup calculation at face value.

What Happens When the Auditor Uses a Sample?

Auditors may examine selected transactions or periods rather than every sale over several years. If the auditor finds errors in the sample, those findings may be projected over a longer audit period.

An unusual month, temporary recordkeeping problem, or unrepresentative transaction group can distort the result. Business owners should understand the sample selection, proposed error rate, and projection method before accepting the auditor’s calculations.

Why Are Good Sales Records So Important?

We have represented two restaurant owners whose records led to very different results.

One restaurant owner maintained detailed sales records and regularly reconciled POS reports with the business’s financial records. The audit resulted in less than $5,000 in additional tax exposure.

Another owner lacked reliable sales records, had bookkeeping mistakes, and did not have a dependable POS system. The state relied on purchases and markup calculations to estimate revenue, and the resulting assessment reached six figures.

The point is not that every estimate is wrong. It is that without reliable records, a business may struggle to prove its actual taxable sales.

How Does New Jersey Find Sales That Were Not Reported?

Auditors do not have to rely solely on a business’s own sales reports. Depending on the situation, they may compare returns with merchant processor statements, Forms 1099-K, bank deposits, supplier records, online ordering platforms, delivery services, and income tax returns.

Those comparisons can reveal unreported sales, but they can also create false discrepancies. For example, a restaurant sale may appear in the POS report and again in the payment processor statement. Those two records describe the same transaction, not two separate sales.

We reconcile the records transaction by transaction when necessary to identify double counting, nontaxable deposits, refunds, tips, and other legitimate differences. A discrepancy alone does not prove that taxable sales were omitted.

What if the Business Claimed Sales Tax Exemptions?

A sale that qualifies for exemption must be supported under the applicable rules. For resale transactions, properly completed resale certificates are particularly important. Missing certificates or incomplete records can lead an auditor to question whether sales should have been taxed.

An attorney can examine whether the transactions were actually exempt, what documentation is required, and whether further evidence can be supplied during the audit.

Can the Audit Also Include Use Tax?

Yes. The auditor may review whether the business paid appropriate tax on taxable purchases used in New Jersey. Common examples include equipment, furnishings, and supplies bought from vendors that did not collect New Jersey tax. Inventory originally purchased for resale but later used by the business may also raise use tax issues.

We review these purchases to determine whether tax was already paid, an exemption applies, or an assessment is otherwise incorrect.

Can Owners Be Personally Liable for Unpaid Sales Tax?

Yes. New Jersey treats sales tax as a trust fund tax. A person who has a duty to collect and remit the tax for a corporation or other business entity may be personally liable when that tax is not paid.

The state examines the person’s actual responsibilities, including financial control, check-signing authority, involvement in tax returns, management duties, and knowledge of unpaid taxes. Simply operating through a corporation or LLC does not always protect a responsible individual.

Closing the business or filing a business bankruptcy does not necessarily resolve an individual’s separate liability. Collected sales tax is not money the business can choose to use for other expenses. Deliberately failing to remit it may create more serious consequences.

Should You Deal Directly With the Sales Tax Auditor?

You have the right to handle an audit yourself, but the process can take months. Gathering records, answering follow-up requests, and disputing estimates can pull an owner away from running the business.

At Tomes Law Firm, we communicate with the auditor on our client’s behalf, organize and explain the financial evidence, review sampling and markup methods, and challenge unsupported conclusions. Our goal is not to avoid legitimate tax. It is to make sure the assessment reflects what the business actually owes.

What if You Disagree With the Assessment?

Disagreements should be raised with the auditor promptly, together with supporting records. If the Division issues an appealable determination, the taxpayer generally has 90 days from the determination date to request an administrative conference or file an appeal with the New Jersey Tax Court, as applicable. A later final determination after an administrative conference may carry its own 90-day Tax Court deadline. Carefully review the specific notice and do not assume negotiations extend the filing deadline.

Frequently Asked Questions

Can I be audited even if I filed every sales tax return? Yes. The Division may still verify whether the amounts reported were correct.

Does every bank deposit count as taxable sales? No. Transfers, loans, and other nontaxable receipts must be separated and supported.

Can I challenge a markup percentage or sample? Yes. Reliable records and evidence about actual business operations may support changes to the calculations.

Can an audit cover both sales tax and use tax? Yes. Auditors may examine both taxable sales and taxable purchases.

When should I hire an attorney? Ideally when you receive the audit notice, before agreeing to methods or providing explanations that may shape the assessment.

Received a New Jersey Sales Tax Audit Notice?

An audit can become costly when the state relies on incomplete records or unsupported assumptions. We have seen careful recordkeeping limit one business’s exposure to less than $5,000, while another business faced a six-figure assessment after its records could not support its sales.

Tomes Law Firm helps New Jersey business owners respond to sales tax audits, challenge questionable calculations, and resolve disputes with the Division of Taxation so they can focus on operating their businesses.

We Solve Tax Problems. You Get Peace of Mind.

Contact Tomes Law Firm to schedule a consultation about your New Jersey sales tax audit.

Official New Jersey Resources

NJ Division of Taxation, Audit: https://www.nj.gov/treasury/taxation/organization/audit.shtml

NJ Division of Taxation, Responsible Persons: https://www.nj.gov/treasury/taxation/respons.shtml

NJ Division of Taxation, Conference and Appeals: https://www.nj.gov/treasury/taxation/organization/confappl.shtml

NJ Division of Taxation, Use Tax FAQs: https://www.nj.gov/treasury/taxation/su_10.shtml