Union County, NC Vehicle Registration & Inspection (2026)
In Union County (Monroe), you pay North Carolina's flat 3% Highway Use Tax on a purchase — the same statewide — plus statewide title and plate fees, and you must pass an annual safety inspection to renew. Union County is one of the 19 emissions counties, so an OBD emissions test is currently required to renew (this program is scheduled for elimination — check before renewing).
Verified July 2026 from official sources. How we verify fees.
What you'll pay in Union County
- Highway Use Tax: 3% of the price (statewide, in place of sales tax)
- Safety inspection: required annually ($13.60, statewide)
- Emissions test: required ($30, currently)
- Vehicle property tax: collected with registration via Tag & Tax Together (rate set by Union County)
Inspections & taxes in Union County
North Carolina bundles your county vehicle property tax with the registration renewal ("Tag & Tax Together"), so your total bill depends on Union County's local rate and your vehicle's value. Before you can renew, the vehicle must pass its annual safety inspection and — for now — an emissions test. See the full rules on our North Carolina inspection page.
Frequently asked questions
How much is the car tax in Union County, NC?
North Carolina charges a flat 3% Highway Use Tax on the purchase price statewide — it's the same in Union County as everywhere else. You'll also owe county vehicle property tax, collected with your registration.
Does Union County require an emissions test?
Union County is one of the 19 emissions counties, so an OBD emissions test is currently required to renew (this program is scheduled for elimination — check before renewing).
Do I need a safety inspection to renew in Union County?
Yes — North Carolina requires a passing annual safety inspection statewide before you can renew your registration, and Union County is no exception.