Car Sales Tax Calculator
Car Sales Tax Calculator
The Deal
State rates are approximate base rates and exclude local add-ons — confirm with your DMV or dealer.
Based on your results — what to do next:
Fine-tune the loan
With $2,025 of sales tax rolled in, your out-the-door price is $28,275. Compare terms and rates to see what the payment really costs.
Can you afford a $28,275 car?
A payment near $500/mo should fit comfortably inside your income. Check it against the 20/4/10 rule.
See what it will be worth
You are paying tax on $27,000 of a vehicle that will lose value quickly. Estimate its resale value year by year.
A car sales tax calculator estimates the tax you owe when buying a vehicle by multiplying the taxable price by your combined state and local rate. In most states the taxable price is the vehicle price minus your trade-in; manufacturer rebates are usually still taxed. Add doc, title, and registration fees to get the true out-the-door price.
How Car Sales Tax Is Calculated
① Taxable amount
Taxable = Price − Trade-In (if allowed) − Rebate (only if your state does not tax it)
Dealer rebates are normally taxed; some states also do not give trade-in credit.
② Sales tax
Tax = Taxable × (State Rate + Local Rate)
City and county taxes stack on top of the state rate.
③ Out-the-door price
OTD = Price − Trade-In − Rebate + Tax + Doc Fee + Title & Registration
This is what you actually pay or finance.
| Variable | Meaning | Typical Value |
|---|---|---|
| Trade-In | Value credited for your old car | Reduces taxable price in most states |
| Rate | State + city/county tax | Roughly 0%–10% combined |
| Fees | Doc, title, registration | $300–$1,500 |
Worked Example — $35,000 car, $8,000 trade-in, $1,500 rebate, 7.5% combined rate
- Taxable amount: $35,000 − $8,000 = $27,000 (rebate is taxed)
- Sales tax at 7.5%: $2,025
- Doc + title/registration fees: $750
- Out-the-door: $35,000 − $8,000 − $1,500 + $2,025 + $750 = $28,275
- Financing $25,275 (after $3,000 down) at 7% for 60 months: ≈ $500/month
💡 Pro-Tip
The trade-in is a tax break. In states that tax only the difference, selling your old car privately for $8,000 instead of trading it in saves nothing extra on tax but gives up this credit — worth $600 at a 7.5% rate. Compare your private-sale price minus that lost credit against the dealer's trade-in offer before deciding.
Car Sales Tax Calculator FAQ
How much is sales tax on a car?
Multiply the taxable price by your combined state and local rate. On a $27,000 taxable amount at 7.5%, tax is $2,025. Rates vary from 0% in a few states to roughly 10% with local add-ons.
Do you pay sales tax on the trade-in value?
In most states, no — tax applies only to the price minus the trade-in. A few states, including California and Virginia, tax the full price, so check your state before you count on the savings.
Are rebates taxed?
Manufacturer rebates are generally taxed as part of the price, while a dealer discount lowers the taxable price. Rules vary by state.
Is sales tax paid to the dealer or the DMV?
Both happen. Dealers collect it in most states; in some you pay it when registering the car, particularly after a private sale.
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