How to Get a Business License in Dayton: What You Need to Know (2026)
The Quick Version
Starting a business in Dayton, OH requires permits and registrations across multiple government layers — federal, state, Montgomery County (county), and city. The primary city-level requirement is the Business License, issued by the Tax Division. Most businesses need 5 to 10 separate registrations, and the order you complete them matters because each step has dependencies on the ones before it.
Contact the Tax Division at 937-333-3500 for current requirements. More information is available at daytonohio.gov.
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What Makes Dayton Different
Dayton has several characteristics that affect the licensing process:
- Ohio CAT applies
- Dayton city income tax — 2.25%
- Wright-Patterson AFB — aerospace/defense businesses
- Montgomery County Health for food permits
- Ohio requires a Commercial Activity Tax (CAT) registration for businesses with gross receipts over $150,000
The Permit Stack: What You Need
Most businesses in Dayton need permits from four levels of government:
Federal: An EIN (Employer Identification Number) from the IRS — free and available instantly online at irs.gov/ein.
State (OH): LLC or Corporation filing through the Ohio Secretary of State. Filing fee: $99 LLC, processing time: 2-3 business days.
County (Montgomery County): Health permits (for food businesses), building inspections, and any county-specific requirements.
City (Dayton): Business License from the Tax Division. Phone: 937-333-3500.
How Long Does It Take?
Most businesses in Dayton can be fully licensed and operational within 4 to 12 weeks, depending on the business type. Simple home-based businesses can often complete the process in 2 to 4 weeks, while restaurants, bars, and businesses requiring inspections typically take 8 to 12 weeks.
The dependency chain matters — some permits can't be applied for until others are in place. Getting the order wrong means delays and wasted time.
Don't Guess — Get Your Roadmap
Every business type has different requirements, and Dayton has its own quirks that generic state guides miss. PermitBoard analyzes your specific business type against Dayton's actual requirements and gives you a step-by-step plan with fees, timelines, and direct links to every form.