To calculate sales tax on a car in Tennessee, take the purchase price, subtract any trade-in, and apply three layers: 7% state tax on the full taxable amount, your county’s local rate on the first $1,600, and an additional 2.75% state surcharge on the portion between $1,600.01 and $3,200. On a $30,000 car in a county with a 2.25% local rate, that comes to about $2,180.
The Three Layers of Tax
Tennessee charges a 7% state sales tax on the retail price of every motor vehicle sold or transferred in the state.1Justia. Tennessee Code 67-6-202 – Property Sold at Retail That 7% hits the entire purchase price, including dealer charges for freight, preparation, or accessories. It applies the same way to new cars, used cars, and private-party sales.2Tennessee Department of Revenue. County Clerk Sales and Use Tax Guide for Automobiles and Boats
Every county and city adds a local sales tax on top, up to a combined 2.75%.3Tennessee Department of Revenue. Local Sales Tax For vehicles, though, that local rate only applies to the first $1,600 of the price.4Justia. Tennessee Code 67-6-702 – Tax Authorized This is Tennessee’s single article rule, and it keeps the local share small no matter how expensive the car is.
A third layer sits on top: a 2.75% state single-article surcharge on the slice of the price from $1,600.01 to $3,200. Anything above $3,200 is taxed only at the base 7%.5Tennessee Department of Revenue. SUT-6 – Single Article Tax – Overview and Application You can find your county’s local rate in the Department of Revenue’s rate database.3Tennessee Department of Revenue. Local Sales Tax
Working the Numbers on a $30,000 Car
Say you’re buying a $30,000 vehicle in a county with a combined 2.25% local rate. The math works out like this:
- State tax: $30,000 × 7% = $2,100
- Local tax: $1,600 × 2.25% = $36
- State single-article surcharge: $1,600 × 2.75% = $44
- Total: $2,180
The local piece is only $36 on a car worth thirty grand. For vehicle purchases, the 7% state rate and the purchase price itself are what drive the bill. The county rate barely moves the needle.
How a Trade-In Lowers the Bill
Trade in your old vehicle and Tennessee subtracts its value from the price before any tax is calculated.6Justia. Tennessee Code 67-6-510 – Computation on Trade-Ins You pay only on the net difference. Take the same $30,000 car with a $10,000 trade-in:
- Taxable amount: $30,000 − $10,000 = $20,000
- State tax: $20,000 × 7% = $1,400
- Local tax: $1,600 × 2.25% = $36
- State single-article surcharge: $1,600 × 2.75% = $44
- Total: $1,480
The trade-in cut your tax by $700. The credit applies broadly whenever a used article is taken in trade as part of the sale, so it isn’t restricted to dealership deals.6Justia. Tennessee Code 67-6-510 – Computation on Trade-Ins Make sure the trade-in is documented clearly on the paperwork.
Why Manufacturer Rebates Don’t Lower the Bill
A manufacturer’s rebate works differently. Tennessee calculates tax on the full price before the rebate is applied. If you hand the dealer $15,000 cash on a $20,000 vehicle because a $5,000 manufacturer rebate covers the rest, your tax is still based on $20,000. The state treats that rebate as a payment from the manufacturer to the dealer, not a reduction in your price.2Tennessee Department of Revenue. County Clerk Sales and Use Tax Guide for Automobiles and Boats
A dealer discount is the opposite. When the dealer actually lowers the sticker, the lower number is what you’re taxed on. The distinction: rebates come from the manufacturer after the price is set; negotiated discounts reduce the price itself.
Private-Party Sales and the 75% Rule
Buy from a private seller and the rates are the same, but you pay the tax yourself at the county clerk’s office. There’s one trap. If the price you report is 75% or less of the vehicle’s fair market value in the NADA Official Used Car Guide, the clerk requires both buyer and seller to complete an Affidavit of Non-Dealer Transfer.7Tennessee Department of Revenue. Affidavit of Non-Dealer Transfers of Motor Vehicles and Boats
Tax is still based on what you actually paid, not book value. But skip the affidavit or fail to document the price with an appraisal and the clerk will assess use tax on 100% of fair market value instead.8Tennessee Department of Revenue. County Clerk Sales and Use Tax Manual for Automobiles and Boats The affidavit is signed under penalty of perjury, so understating the price to shave the tax isn’t a safe play.
Family Gifts That Owe Nothing
Transfers to certain family members are fully exempt. The qualifying relationships are spouses, siblings, lineal relatives (parents, grandparents, great-grandparents, children, grandchildren, great-grandchildren), and the spouses of children, grandchildren, and great-grandchildren. Both parties complete the Affidavit of Non-Dealer Transfer together.7Tennessee Department of Revenue. Affidavit of Non-Dealer Transfers of Motor Vehicles and Boats When no money changes hands, the sales price is zero and there is no tax.
A gift transaction without a properly completed affidavit gets taxed on the full blue book value.2Tennessee Department of Revenue. County Clerk Sales and Use Tax Guide for Automobiles and Boats Transfers to aunts, uncles, cousins, or friends don’t qualify. Those are treated as sales even without payment, and tax is assessed on fair market value.
Buying Out of State
Buy a car in another state and drive it home, and you owe Tennessee use tax at the same rates. Tennessee credits you for any sales or use tax you legitimately paid to the other state.9Legal Information Institute. Tennessee Comp. R. and Regs. 1320-05-01-.91 If you paid 5% elsewhere, you’d owe Tennessee the remaining 2% plus the local and surcharge pieces. Keep proof of payment and the seller’s name.
Registration fees paid to another state do not count as sales or use tax and cannot be credited.9Legal Information Institute. Tennessee Comp. R. and Regs. 1320-05-01-.91 Only actual sales or use tax qualifies.
Active-Duty Military Buyers Skip the Tax
Active-duty service members stationed in Tennessee, Tennessee National Guard members in the Active Guard Reserve program, and reserve members stationed in a combat zone are exempt from sales and use tax on a vehicle purchase.10Tennessee Department of Revenue. SUT-84 – Exemption for Vehicles Purchased by United States Service Members The vehicle must be titled in the qualifying member’s name, alone or jointly with a spouse or lineal relative. You’ll need a copy of official military orders. For combat zone assignments, the exemption runs from the date of the orders through 90 days after release from the combat zone.