Ohio Department of Taxation Sales Tax Audit Petition for Reassessment

The situation

Dave, 51, owns three restaurant locations in Columbus, Dave's Diner, LLC, with combined annual sales of $4.2M. In March 2026 he received an Ohio Department of Taxation Notice of Assessment: $31,800 in unremitted Ohio sales tax, plus $6,360 in penalties and $4,240 in interest = $42,400 total. The ODT auditor had reviewed 4 months of Dave's records from January–April 2023 and extrapolated that figure to a 36-month audit period.

(a) The sample period was atypical. January–April 2023 fell during the post-COVID cost-inflation recovery period when Dave had temporarily raised menu prices but foot traffic was still recovering. His Q1 2023 sales were 22% below his Q3-Q4 2022 average. Projecting Q1 2023 figures to a 3-year period significantly over-estimates his full-period sales. Dave has POS Z-tape records for the entire 36-month audit period showing actual sales that are $41,000 lower than the auditor's extrapolation, enough to eliminate most of the assessment.

(b) The petition deadline is 60 days from RECEIPT, not mailing. The Notice of Assessment was mailed March 10 and received March 12. Dave has until May 11 (60 days from March 12) to file, not 60 days from the March 10 mailing date. The tool's Classifier calculates the deadline from the correct date.

(c) He can present his argument informally by phone. The ODT Appeals Division hearing is informal, just the taxpayer presenting their case to a Department attorney. Dave doesn't need a tax attorney to file the petition and present basic documentation. The $79 Protest Package generates the petition language and the sampling challenge framework; Dave provides the actual POS data.

Second portrait: Mike, 47, owns MiCore Metal Fabrication in Youngstown, a job shop producing custom metal components for the automotive supply chain ($6.8M revenue, 31 employees). In January 2026, Mike received an Ohio DOR Notice of Assessment for $38,200 in use tax on CNC grinding machines, press tooling, and industrial air compressors he purchased from an Indiana supplier (who hadn't collected Ohio use tax).

The ODT auditor applied use tax to ALL of Mike's out-of-state equipment purchases without distinguishing between manufacturing equipment (exempt under ORC 5739.02(B)(42)) and general business equipment (taxable). Mike's CNC grinding machines and press tooling act DIRECTLY on his metal work-in-process, they are manufacturing equipment. Only the industrial air compressors (which power the plant generally) might be legitimately taxable. The manufacturing exemption should eliminate roughly 80% of the assessment.

Who receives this

Ohio businesses receiving Ohio Department of Taxation Notices of Assessment for sales or use tax. Primary segments: (1) Ohio restaurant and bar owners (Columbus, Cleveland, Cincinnati metro areas) receiving audits using statistical sampling extrapolation, particularly those with audited sample periods during COVID-period disruptions (2020-2022) or seasonal low-points; (2) Ohio manufacturers (automotive supply chain, steel, rubber, aerospace sub-sectors) receiving use tax assessments on manufacturing equipment purchased from out-of-state vendors; (3) Ohio motor vehicle dealerships and watercraft dealers receiving targeted enforcement (ODT's 2024-2025 enforcement focus). Secondary: Ohio construction contractors disputing labor vs. materials classifications.

Why the agency will not advise you

Ohio Department of Taxation cannot advise audit respondents on how to contest its own assessments. The ODT Appeals Division assigns the taxpayer's petition to a Department attorney who will advocate for the assessment, there is no neutral ODT advisor available to the respondent. The sampling challenge methodology (demonstrating that the auditor's sample period was atypical) is codifiable and involves a structured factual analysis that the business owner can execute with their own records.

Key facts, with sources

• The Ohio Department of Taxation administers the Ohio Sales and Use Tax under ORC Chapter 5739 (Sales Tax) and Chapter 5741 (Use Tax). When a field audit concludes, ODT issues a Notice of Assessment (sometimes called a Proposed Assessment). Under ORC 5739.13, the taxpayer has 60 days from the DATE OF RECEIPT of the Notice of Assessment to file a Petition for Reassessment with the Department's Appeals Division. The 60-day period runs from the date the taxpayer actually receives the notice, not the date of mailing. The Petition states the basis for why the taxpayer believes the assessed amount is incorrect. The ODT Appeals Division assigns the petition to an attorney who works for the Department; the taxpayer or their counsel presents their argument either in person or by phone. If the taxpayer disagrees with the Appeals Division's Final Determination, they may appeal to the Ohio Board of Tax Appeals within 60 additional days. The Ohio BTA (established 1916) is an independent administrative body, NOT part of the Ohio Department of Taxation, its decisions are subject to judicial review by the Ohio Court of Appeals. Source: Ohio Department of Taxation — Appeals Process (Legal Resources) · An Overview of Ohio Sales Tax Audit and Appeal — ARN Law · Ohio Sales Tax Defense — Sales Tax Helper LLC
• Ohio has recently targeted bar and restaurant operations and motor vehicle and watercraft dealers for enhanced sales tax enforcement (2024-2025). For restaurants and bars, ODT field auditors commonly use a sampling methodology: they audit a representative 3-month period of sales records and extrapolate the findings to the full 3-year audit period. This methodology generates over-assessments when the sampled period is atypical, for example: (a) COVID-period sampling (2020-2022), Ohio had indoor dining restrictions from March-June 2020 (Governor DeWine's Director's Order); capacity restrictions continued through much of 2021; a sampled period during these restrictions dramatically understates normal sales; (b) seasonal variation, a restaurant that is seasonally slow in January-March (the most common audit sample period) has lower sales than its summer peak; projecting winter figures to a 3-year period over-assesses tax; (c) construction disruptions, renovations or road construction can temporarily depress foot traffic. Respondents can challenge the sampling methodology by: (i) providing actual POS Z-tape records for the full audit period demonstrating that the sample period was unrepresentative; (ii) documenting the specific reason the sample period was anomalous (COVID orders, seasonal pattern, construction records). Source: Ohio Sales Tax Enforcement Risks and Response Guide — GetTaxReliefNow.com · Challenges Businesses Face with Ohio State and Local Taxes — Buckingham, Doolittle & Burroughs · Ohio BTA Resolution Center
• Ohio's manufacturing exemption (ORC 5739.02(B)(42)) exempts from sales and use tax tangible personal property used or consumed directly in the production of tangible personal property for sale. Ohio's manufacturing exemption covers equipment that acts directly on the work-in-process: machinery used in the actual transformation of raw materials into finished goods, quality control equipment testing goods while they are still in the manufacturing process, material handling equipment within the production area (between workstations, within the manufacturing floor), and packaging materials that become part of the finished product. Common ODT audit disputes over the manufacturing exemption: (a) dual-use equipment, equipment that serves both manufacturing and non-manufacturing functions (e.g., a forklift that moves both raw materials and finished goods); (b) maintenance and repair supplies, consumable items used to maintain manufacturing equipment (the exemption applies to the equipment itself, not necessarily to supplies used to maintain it); (c) packaging equipment, whether packaging machinery that creates the final product package qualifies as directly acting on the product. Ohio has one of the larger manufacturing bases among Midwestern states (automotive supply chain, steel, rubber, aerospace). Use tax on out-of-state equipment purchases (where an out-of-state seller did not collect Ohio use tax) is a common audit finding for Ohio manufacturers. Source: Ohio Sales Tax Guide for Businesses — Sales Tax Helper · Ohio Department of Taxation — Sales and Use Tax · How Ohio Sales Tax Applies to Service Businesses — Sales Tax Helper

When to bring in a professional

Self-serve responses fit routine cases: clear facts, amounts a business can absorb, and a deadline still ahead of you. Bring in a licensed professional when the amount at stake is large relative to their fee, the facts are genuinely disputed, criminal exposure is possible, or the deadline has already passed. A short paid consultation to sanity-check your plan is often worth it even when you handle the filing yourself.

All sources for this guide

1. Ohio Department of Taxation — Appeals Process (Legal Resources)
2. An Overview of Ohio Sales Tax Audit and Appeal — ARN Law
3. Ohio Sales Tax Defense — Sales Tax Helper LLC
4. Ohio Sales Tax Enforcement Risks and Response Guide — GetTaxReliefNow.com
5. Challenges Businesses Face with Ohio State and Local Taxes — Buckingham, Doolittle & Burroughs
6. Ohio BTA Resolution Center
7. Ohio Sales Tax Guide for Businesses — Sales Tax Helper
8. Ohio Department of Taxation — Sales and Use Tax
9. How Ohio Sales Tax Applies to Service Businesses — Sales Tax Helper