Kentucky Use Tax Accrual Mistakes That Cost Businesses

Kentucky businesses that purchase taxable goods or services without paying sales tax at the point of purchase are required to self-assess and remit use tax directly to the Kentucky Department of Revenue — and errors in this process are one of the leading causes of audit assessments and overpayments alike.

Key Takeaways

• Use tax applies when Kentucky sales tax was not collected at the time of purchase — businesses are responsible for self-assessing and remitting it.
• The most common mistakes include under-accruing on out-of-state purchases, misclassifying taxable items as exempt, and inconsistent recordkeeping.
• Both under-payment and overpayment are common — overpayments are recoverable but only within Kentucky's refund statute window.
• A use tax accrual error discovered during an audit can result in significant back assessments, penalties, and interest.
• Manufacturers, mining operations, and rock quarries often have the highest exposure — and the greatest refund recovery potential.

What Is Use Tax and Why Does It Matter in Kentucky

Use tax is the complement to sales tax. When a Kentucky business buys goods or services from a vendor who does not collect Kentucky sales tax — whether that vendor is out of state, selling online, or simply not registered in Kentucky — the business is legally obligated to calculate and remit use tax on that purchase at the same rate as sales tax. This is a self-assessed obligation, which means it depends entirely on the business's own internal processes.

Because no third party is collecting it, use tax compliance tends to be inconsistent. Many businesses accrue it manually through their accounts payable process, and that's exactly where mistakes creep in.

The Most Common Use Tax Accrual Mistakes in Kentucky

Understanding where errors occur is the first step to preventing them. The most frequently seen problems include:

• Failing to accrue on out-of-state vendor invoices. When a Kentucky business buys equipment, supplies, or services from an out-of-state seller who doesn't charge Kentucky sales tax, use tax is owed. Many AP teams don't flag these transactions consistently.
• Misapplying exemptions. Businesses sometimes apply exemptions to purchases that don't actually qualify, or fail to document the basis for the exemption. An exemption applied without proper documentation is no exemption at all during an audit.
• Accruing on items that are exempt. The reverse also happens — businesses pay use tax on items that qualify for an exemption, such as certain manufacturing machinery or materials used directly in production. This is an overpayment that can often be recovered.
• Inconsistent treatment of freight and shipping charges. Whether delivery charges are taxable in Kentucky depends on how they are invoiced and what they accompany. Many businesses apply a single rule across the board and get it wrong in both directions.
• Software and digital purchases. The taxability of software, SaaS, and digital goods continues to evolve. Many businesses either ignore these purchases entirely or accrue incorrectly.
• Leased equipment and rentals. Use tax applies to leased tangible personal property used in Kentucky, and this is frequently missed — especially for businesses in Owensboro, Louisville, or Lexington that lease industrial or office equipment from out-of-state lessors.

Why These Mistakes Attract Kentucky Department of Revenue Audits

The Kentucky Department of Revenue routinely selects businesses for sales and use tax audits based on discrepancies, industry norms, and information matching. A business with large out-of-state purchase volume but low use tax remittance is a natural audit target. So is a business that reports inconsistent accruals year over year.

When auditors find use tax errors, they typically assess back tax for the full open audit period — which can span several years — plus penalties and interest. For businesses in Bowling Green, Paducah, Ashland, or Henderson with significant capital purchases or intercompany transactions, the exposure can be substantial. Understanding how sales tax audits are handled before an auditor arrives is far less costly than responding after the fact.

Overpayments: The Hidden Opportunity in Use Tax Errors

While under-accrual gets most of the attention, overpayment is equally common and often goes unnoticed. Manufacturers, mining operations, and rock quarries in particular tend to over-accrue use tax on inputs, utilities, and equipment that qualify for Kentucky's manufacturing or industrial exemptions.

These overpayments are recoverable — but only if a refund claim is filed within Kentucky's statute of limitations for tax refunds. Once that window closes, the overpaid dollars are gone. Businesses that haven't reviewed their use tax accruals in several years may be sitting on recoverable amounts they don't know exist. Our team helps manufacturers and mining operations across Kentucky identify and pursue those recoveries through our sales & use tax recovery services.

If you're uncertain what your exposure looks like, reviewing our proven approach to use tax analysis can give you a clear picture of how the process works.

Steps Kentucky Businesses Should Take Now

A proactive use tax compliance review doesn't have to be a massive undertaking. Here's a practical framework:

| Step | Action | Why It Matters | |------|--------|----------------| | 1 | Pull out-of-state vendor invoices for the past 3 years | Identifies accrual gaps | | 2 | Map each purchase category to taxability rules | Catches misclassification | | 3 | Review exemption certificates on file | Ensures documentation is audit-ready | | 4 | Flag purchases that may have been over-taxed | Opens path to refund recovery | | 5 | Establish a consistent monthly accrual process | Prevents future errors |

For finance and accounting teams that want to build internal capability, sales tax training for your staff can reduce ongoing errors and strengthen your audit posture.

Frequently Asked Questions

What is the difference between sales tax and use tax in Kentucky?

Sales tax is collected by the seller at the point of sale. Use tax is self-assessed by the buyer when the seller does not collect Kentucky sales tax — both apply to the same types of taxable transactions and are assessed at the same rate.

What triggers a use tax audit in Kentucky?

Common triggers include low or inconsistent use tax remittance relative to out-of-state purchase volume, discrepancies identified during a sales tax audit, and industry-wide compliance initiatives by the Kentucky Department of Revenue.

Can Kentucky businesses recover use tax they overpaid?

Yes — manufacturers, mining operations, and rock quarries that overpaid use tax on exempt purchases can file refund claims, but only within Kentucky's statute of limitations window. Claims filed after that deadline are generally not recoverable.

How far back can the Kentucky Department of Revenue audit use tax?

Kentucky's standard open audit period for sales and use tax covers several years of returns. The exact period depends on circumstances, including whether returns were filed and whether there is evidence of fraud or substantial underreporting. See our frequently asked questions for more detail.

Work With Kentucky's Use Tax Specialists

Use tax compliance is one of the most overlooked areas of state tax management — and one of the most consequential when it goes wrong. Whether your business is in Frankfort, Elizabethtown, Hopkinsville, or Lexington, the same self-assessment obligations apply, and the same audit risks exist.

George & Company Tax Consulting brings 88+ years of combined experience helping Kentucky businesses manage use tax exposure, defend against audits, and recover overpayments. If your last internal use tax review was more than two years ago, it's time for a fresh look. Contact us to schedule a confidential consultation.