Kentucky Use Tax Accrual Mistakes That Trigger Audits

Kentucky businesses that purchase goods or services without paying sales tax at the point of purchase are required to self-assess and remit use tax — and errors in that self-assessment process are one of the most common triggers for costly state audits.

Use tax is the counterpart to sales tax. When a Kentucky vendor does not collect sales tax on a taxable sale — because the seller is out of state, because an exemption certificate was used incorrectly, or simply because it was overlooked — the purchasing business is legally obligated to calculate and remit use tax directly to the Kentucky Department of Revenue. In practice, this self-assessment process is where compliance breaks down.

Why Kentucky Use Tax Compliance Is So Easy to Get Wrong

Unlike sales tax, which is collected and remitted by the seller, use tax places the compliance burden squarely on the buyer. That means your accounts payable team, your ERP system, and your purchasing workflows all have to work together correctly — and consistently — across every invoice, every vendor, and every expense category.

Common failure points include:

• Out-of-state vendor purchases: Many businesses assume that buying from an out-of-state vendor means no tax applies. In most cases, Kentucky use tax is still owed if the item is used in Kentucky and no sales tax was charged.
• Exempt purchases later converted to taxable use: If you purchase an item under a manufacturing or resale exemption and then redirect it to a taxable use — such as using production supplies for an administrative function — use tax should be accrued at that point. Many businesses miss this entirely.
• Software and digital goods: The taxability of SaaS, digital downloads, and cloud-based services continues to evolve under Kentucky law. Businesses frequently fail to accrue use tax on these purchases, assuming they are non-taxable.
• Intercompany transfers: When goods move between related entities or between a parent company and a Kentucky subsidiary, use tax obligations can arise and are routinely overlooked.
• Partial exemptions: Some purchases are partially taxable — for example, a piece of equipment that serves both an exempt manufacturing function and a taxable administrative function. Incorrect apportionment is a frequent audit finding.

For manufacturers in cities like Louisville, Lexington, and Owensboro, these errors compound quickly across high purchase volumes. Understanding our sales & use tax services is a good first step toward knowing where your exposure likely sits.

How the Kentucky Department of Revenue Finds These Errors

Auditors reviewing a Kentucky business's records know exactly where to look. A typical use tax audit will include:

• A review of fixed asset additions to verify sales or use tax was paid at acquisition
• A sample of accounts payable invoices to identify untaxed purchases of taxable items
• A comparison of sales tax collected to sales reported, looking for inconsistencies
• A review of exemption certificates to determine whether they were properly obtained and applied

Businesses in Bowling Green, Elizabethtown, Paducah, and other manufacturing hubs often face concentrated scrutiny because their purchase volumes are large and their exemption certificate usage is high — which means more opportunities for auditors to find discrepancies.

If you are already under audit or preparing for one, understanding the sales tax audit handling process can help you respond strategically rather than reactively.

The Overpayment Side: Use Tax Errors That Hurt You, Not Just the State

Use tax compliance errors cut both ways. Just as some businesses under-accrue and owe back taxes, others over-accrue and effectively pay tax they never owed — a form of silent overpayment that rarely gets corrected unless someone is specifically looking for it.

This is particularly common among manufacturers, mining operations, and rock quarries in Kentucky, where purchases of machinery, fuel, utilities, and production supplies may qualify for exemptions that were never applied. If your business has been accruing use tax on purchases that fall under Kentucky's manufacturing exemption or industrial utilities exemption, you may have a recoverable overpayment sitting in your records right now.

George & Company has helped qualifying businesses recover those overpayments through formal refund claims with the Kentucky Department of Revenue. You can learn more about our refund recovery process and see what has been recovered for similar businesses by reviewing client results.

Building a Use Tax Accrual Process That Holds Up to Scrutiny

The most defensible use tax compliance programs share a few common characteristics:

• A documented accrual policy that specifies which purchase categories are taxable, which are exempt, and who is responsible for making that determination
• Consistent exemption certificate management with up-to-date certificates on file for every vendor receiving an exemption
• Periodic self-audits — ideally annual reviews — comparing accrued use tax to purchases by category to catch drift before an auditor does
• Training for accounts payable staff who are making real-time taxability decisions on every invoice they process

For businesses that lack the internal resources to maintain this level of discipline, ongoing consultation with a state tax specialist can fill the gap efficiently and cost-effectively. If training your internal team is the priority, sales tax training seminars are another way to build lasting competency.

Our proven approach to use tax reviews involves a structured look at your purchase data, exemption certificate files, and accrual methodology — identifying both underpayments that create audit risk and overpayments that can be recovered.

Frequently Asked Questions

What is use tax in Kentucky and who owes it?

Kentucky use tax applies to tangible personal property or taxable services purchased without paying Kentucky sales tax, when those items are used, stored, or consumed in Kentucky. Any business that makes purchases from out-of-state vendors or uses exempt-purchased items for taxable purposes may owe use tax.

How far back can Kentucky audit use tax returns?

Kentucky's standard statute of limitations for use tax assessments is generally three years from the date the return was filed or due, but this period can be extended in cases of fraud or when no return was filed. Businesses should maintain purchase records and exemption certificates well beyond the minimum period.

Can a business get a refund if it overpaid Kentucky use tax?

Yes. If a business accrued and remitted use tax on purchases that were actually exempt — such as manufacturing machinery or qualifying industrial utilities — a refund claim can typically be filed within a specific window. Manufacturers, mining operations, and rock quarries are the most common candidates for these recoveries in Kentucky.

What triggers a Kentucky use tax audit?

Common triggers include a mismatch between reported sales and purchases, a referral from another state's audit, an unusually low effective tax rate relative to industry peers, or a routine audit selection. Businesses with large purchase volumes and extensive exemption certificate usage tend to face more frequent scrutiny.

Let George & Company Review Your Use Tax Exposure

With more than 88 years of combined experience serving Kentucky businesses — from Louisville to Frankfort, Henderson to Lexington — George & Company Tax Consulting has the depth and the process to find what others miss. Whether you need audit defense, a use tax accrual review, or help recovering an overpayment you didn't know you had, our team is ready to take a hard look at your situation.

If cost or commitment is a concern, our engagements are structured around flexible, contingency-based rates that align our success with yours. Have more questions before getting started? Visit our frequently asked questions page for quick answers.

Contact us today to schedule a confidential consultation and find out what your Kentucky use tax position is really costing you.