Ohio Manufacturing Tax Laws: Exemption Checklist for Manufacturers
Ohio manufacturers are not exempt as a status. The state exempts specific purchases and sales: property used primarily in manufacturing, items that become part of the product, and sales to qualifying buyers who give you a certificate. This checklist covers the categories, the paperwork, and the ERP fields that let you prove each exemption when asked.
0 of 30 items complete
11 critical items still open - these are the highest-risk gaps.
1. Qualifying the manufacturing exemption
2. Certificates you give vendors
3. Certificates you collect from customers
4. ERP setup and controls
5. Other Ohio taxes and returns
Tick each item you have verified. Unticked critical items are gaps to close before your next return or audit. This is a working checklist, not tax advice; confirm current rules with the Ohio Department of Taxation or your tax adviser.
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How to use this checklist
Review it with your controller, buyer and ERP administrator. Tick verified items, assign owners to the rest, and export the PDF as a dated record. Critical items are the ones that most often fail in audits: a certificate behind every tax-free sale, a documented production basis for equipment, and use tax accrued where the seller charged none. Repeat annually and after buying new production lines.
- Start with group 1, because it decides everything else
- Collect missing certificates first, they are the easiest audit finding
- Re-run after any plant expansion or new product line
The manufacturing exemption in practice
The test centres on the use of the equipment: is it used primarily in the production process that changes the form, composition or character of the product? Machines on the line generally fit; forklifts moving finished goods to a dock, office computers and most facility items often do not. Document the reasoning per asset class at purchase, because rebuilding that logic years later from invoices is slow. Confirm specifics against the Revised Code and Department of Taxation guidance.
Tracking certificates in the ERP
A certificate on paper protects you only if you can find it. Store the reference, basis and review date on the customer and vendor records, and let invoicing check them. For purchases, drive tax treatment from a category on the purchase line so exempt production items and taxable supplies post to different tax codes and use tax accrues without manual effort.
- Exempt flag plus reason code on the customer
- Certificate image or document link on the record
- Category-driven tax code on purchase lines
- Exempt sales and purchases reports tied to the return
Common mistakes
The usual errors are using one blanket certificate for every purchase from a vendor, treating all plant-floor items as exempt, ignoring use tax on out-of-state purchases, and confusing the commercial activity tax with sales tax. The CAT is a separate gross receipts tax with its own registration and thresholds, so exemption certificates do not affect it.
Frequently Asked Questions
Are all Ohio manufacturers exempt from sales tax?
No. Ohio exempts particular transactions, such as property used primarily in manufacturing and items that become part of a product sold. Supplies, office items and distribution equipment are often taxable. Document the basis for each category and check current Revised Code and Department of Taxation guidance.
What is Ohio form STEC B?
STEC B is Ohio's blanket sales and use tax exemption certificate. Buyers give it to a vendor for recurring qualifying purchases, selecting the exemption basis such as manufacturing. Use it only for items that qualify and keep a signed copy for every vendor.
Is the commercial activity tax the same as sales tax?
No. The commercial activity tax is a gross receipts tax on business activity in Ohio, with its own registration, thresholds and returns. Sales tax exemption certificates do not exempt receipts from the CAT. Review both obligations separately.
Do I owe use tax on out-of-state purchases?
Generally yes, when a taxable item is delivered to Ohio and the seller did not collect Ohio tax. Accrue use tax at the rate for the delivery location and reconcile the accrual account to the return each period.
If certificates and exemption bases are scattered across drives and email, we can help you set up a private assistant on your own servers that finds the right certificate for a customer or vendor in seconds.
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