Tax, title, registration and dealer fees

Car Out-the-Door Price Calculator

Enter the vehicle price and registration state to estimate sales tax, title, registration, dealer fees and the amount due after trade-in.

50 states + DC2026 planning dataNo sign-up

Enter price and state ↓Your amount due appears after one click.

Start hereChange any value to update the result.

The example shows the required inputs. Replace only the values that apply to you.

Saved only on this devicePlanning estimate

Your inputs

Enter the details you haveEnter the vehicle price and registration state first. We supply a planning tax rate, ordinary registration costs and trade-in treatment.

Vehicle price$Use the negotiated price before tax and fees.Registration stateWe fill a 2026 population-weighted state-and-local planning rate automatically.Buying fromPrivate-party estimates remove the dealer documentation fee.Trade-in offer, if any$

California planning rule: Rate depends on the registration address; registration includes a value-based fee. The taxable price is not reduced by the trade-in in this estimate.

Add rebates, products or exact quote feesOptional

Manufacturer rebate or discount$Enter a discount shown on the buyer's order. Tax treatment can vary.Dealer add-ons and taxable products$Warranty, accessories, protection packages or other taxable additions.Title, registration and plate fees$Replace the state planning estimate with the DMV or dealer amount when available.Dealer documentation fee$Ignored for a private-party purchase.Exact local vehicle-tax rate%Replace the planning model with one flat registration-address rate from a dealer or official lookup.

Estimated result

Ready when you areYour out-the-door estimate will appear here.

Enter the price, confirm the registration state, then calculate. Optional fees can be added afterward.

Inputs stay in this browser and are never uploaded.

State-specific out-the-door calculators

Start with the registration state

These pages explain the state rule, preload the calculator, and link to official title, registration and tax checks.

CACalifornia out-the-door calculator TXTexas out-the-door calculator FLFlorida out-the-door calculator NYNew York out-the-door calculator PAPennsylvania out-the-door calculator

When to use this calculator

See a worked example for the situation closest to yours.

Vehicle purchase tax

How much sales tax will I pay when buying a car with a trade-in?

See the example →

How it works

From negotiated price to amount due

Formula

Taxable amount = price + taxable add-ons and dealer fees − eligible rebate and trade-in credit. Amount due = price + tax + government and dealer fees − rebate − trade-in.

Choose the registration state and TaxMathKit supplies a vehicle-specific planning rate, a combined title-registration-plate estimate, a dealer paperwork estimate, and the usual dealer trade-in treatment.

The result separates the out-the-door price before trade-in from the amount still due after applying the trade. Replace any planning default with figures from a buyer's order or official DMV source.

Assumptions and limits

Dealer purchase unless private seller is selected
State-level 2026 planning defaults unless overridden
No loan interest, down payment or insurance
Registration address and vehicle details can change the exact amount

Planning estimate, not tax advice

Tax law depends on facts this tool cannot collect. Do not use the result as the sole basis for filing, withholding or payment decisions.

Frequently asked questions

Does every state reduce tax for a trade-in?

No. The calculator applies a state planning rule automatically, but capped, partial and transaction-specific rules still need to be checked on the dealer worksheet.

Does the total include registration and title fees?

Yes. It starts with an editable state planning estimate for title, registration and ordinary plates, then shows those fees separately in the result.

Is this the exact price I will pay?

No. It is a line-by-line negotiation budget. Confirm the local vehicle rate, registration calculation, add-ons and dealer charges on the buyer's order before signing.

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