Use Tax Mistakes That Trigger Kentucky Audits
Unaccrued use tax is one of the most common — and most expensive — findings in a Kentucky Department of Revenue audit. Use tax applies to taxable items you purchase without paying sales tax, and the responsibility to self-assess and remit it falls entirely on you, not the vendor. Understanding where the mistakes happen and how to correct them before an auditor arrives can save your business a significant amount in assessments, interest, and penalties.
Key Takeaways
- Use tax is the buyer's obligation whenever a vendor does not collect Kentucky sales tax on a taxable purchase.
- Out-of-state and online purchases, inventory withdrawals, and capital asset purchases are among the most frequently missed categories.
- Auditors project a single error pattern across the entire audit period, turning a small recurring mistake into a large assessment.
- Both under-accruals and over-accruals are correctable — finding overpayments can offset what you owe.
- A proactive use tax review is almost always less costly than having errors discovered during an audit.
What Use Tax Is and Why It Matters
Use tax is the complement to Kentucky sales tax. When you purchase a taxable item or service and the seller does not collect Kentucky sales tax — most commonly because the seller is located out of state or operates through an online platform — you generally owe use tax directly to the Commonwealth at the same rate as the sales tax that should have been collected. The obligation exists regardless of whether the vendor invoices you for it.
Because no one sends you a bill for use tax, it is easy to overlook. That is precisely why Kentucky auditors treat it as a primary audit target. A business that does not have a consistent accrual process in place will almost certainly have exposure, and that exposure grows with every purchase cycle that goes unreviewed.
The Mistakes That Draw Audit Attention
Out-of-State and Online Purchases
This is the single largest source of use tax exposure for most Kentucky businesses. When you purchase equipment, supplies, software, or taxable services from an out-of-state vendor who does not collect Kentucky sales tax, the use tax obligation shifts to you immediately. Many purchasing and accounts payable teams are not trained to flag these transactions, which means they accumulate quietly across every open period.
Inventory Withdrawn for Internal Use
When a business withdraws items from resale inventory for its own use — whether for internal operations, employee use, samples, or demonstrations — that withdrawal is generally a taxable event. If sales tax was not paid on the original purchase because the item was acquired under a resale exemption, use tax is typically owed at the time of withdrawal. This is a recurring audit issue that auditors are specifically trained to look for.
Misapplied Exemptions
Not every purchase that feels tax-exempt actually is. Exemption certificates must be properly executed, the claimed exemption must match the actual use, and the category of exemption must be valid under Kentucky law. When a business applies an exemption that does not hold up under scrutiny — even in good faith — the result is an unpaid tax liability that the auditor will include in the assessment.
Inconsistent Accrual Practices Across Departments
In larger organizations, use tax accrual is often handled inconsistently. One division may have a reliable process while another does not. Some purchases are coded through accounts payable systems that trigger accrual review; others bypass that workflow entirely. When an auditor finds that one area of the business is accruing correctly and another is not, it signals a systemic problem that invites deeper scrutiny.
Capital Asset Purchases
Large equipment purchases, leasehold improvements, and technology acquisitions frequently slip through without a use tax review. These transactions are significant in dollar amount, which means a missed accrual on a single capital purchase can produce a large assessment on its own. Out-of-state vendors who deliver and install equipment in Kentucky may or may not collect the appropriate tax, and assuming they have handled it correctly is a risk.
Why Self-Assessment Is So Error-Prone
Use tax requires judgment calls about taxability at the exact moment a purchase is made — judgments that are typically left to staff focused on operations, not tax compliance. Without a defined accrual process and consistent training, errors accumulate on both sides of the ledger: tax that should have been accrued but was not, and tax that was accrued on purchases that were actually exempt.
The audit risk is compounded by how Kentucky auditors handle findings. When an auditor identifies a recurring error pattern — for example, use tax consistently missed on freight charges from a particular vendor type — they do not limit the finding to the examples they reviewed. They project the error rate across the entire audit period, often three to four years. A pattern that seems minor in any single transaction can produce a substantial assessment when projected at scale.
Our ongoing consultation services are specifically designed to prevent these patterns from developing in the first place.
Common Use Tax Categories at a Glance
| Purchase Category | Commonly Missed? | Typical Risk Level | |---|---|---| | Out-of-state vendor purchases | Yes | High | | Online marketplace purchases | Yes | High | | Inventory withdrawn for internal use | Yes | Medium–High | | Capital equipment from out-of-state | Yes | High | | Software and digital services | Frequently | Medium–High | | Freight and delivery charges | Sometimes | Medium | | Purchases under misapplied exemptions | Yes | Medium–High |
How to Fix It Before the State Does
A proactive use tax review, following our proven approach, is the most effective way to get ahead of audit exposure. The process involves validating your current accrual workflow, testing purchases across the open audit period, and identifying both under-accruals and over-accruals. Correcting errors voluntarily — before an auditor identifies them — avoids the projection methodology auditors use and typically results in a far smaller liability than the same errors would produce in an audit context.
Equally important, a review almost always surfaces overpayments. Tax accrued on exempt items, duplicate accruals, and tax paid on nontaxable services are all recoverable, and those refunds or offsets can meaningfully reduce or eliminate the net liability from the review.
If your business has not conducted a use tax review in the past two to three years, the open period has likely accumulated exposure that is worth understanding now rather than later.
Frequently Asked Questions
What is use tax in Kentucky?
Use tax applies to taxable items and services purchased without Kentucky sales tax — most commonly from out-of-state or online vendors. The buyer is responsible for self-assessing the correct amount and remitting it to the state. The rate mirrors the Kentucky sales tax rate applicable to the transaction.
Why do auditors focus so heavily on use tax?
Because it is self-assessed and frequently missed, unaccrued use tax is one of the most reliable sources of audit findings. Auditors know from experience that most businesses have gaps in their accrual process, making use tax a productive area to examine in nearly every engagement.
Can a use tax review also uncover overpayments?
Yes, and this is one of the most underappreciated aspects of a proactive review. Businesses frequently accrue tax on purchases that are actually exempt, or pay tax to vendors on transactions where no tax was due. Those amounts can be recovered as refunds or used to offset underpayments identified in the same review.
Is it better to correct use tax errors voluntarily rather than waiting for an audit?
Consistently, yes. When you identify and correct errors on your own terms, you control the scope of the review and avoid the projection methodology auditors apply to error patterns. Voluntary correction is almost always less costly in total than the same errors being discovered and assessed during a formal audit examination.
Review Your Use Tax Exposure
If you are uncertain whether your use tax accruals are accurate — or if it has been several years since your process was last reviewed — George & Company Tax Consulting can evaluate your current practices and test your purchases across the open period at no obligation. Our team brings more than 88 combined years of Kentucky sales and use tax experience, including time as former state auditors, which means we know exactly what examiners look for and how to address it effectively.
Call us at 606-682-2986, contact us to start a conversation, or take a few minutes to complete our free assessment and get a clearer picture of where your exposure may lie. Addressing use tax proactively is one of the most straightforward ways to protect your business from a costly audit finding.