TheRealOTD
The calculator that actually looks it up

What will you really pay out the door?

Price and ZIP in — itemized tax, title, registration, and doc fee out. Every line labeled: government-mandated, capped by law, or dealer-added and negotiable.

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The negotiated (or advertised) selling price, before fees and tax.
Tax and registration follow where YOU register — not the dealership.
EV/PHEV surcharges apply in many states.
More options — trade-in, rebates, doc fee, add-ons
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Reduces your taxable amount only in states that allow it.
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Display-only in the equity math — doesn't affect tax.
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Taxed in some states, a tax-free discount in others.
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Off-invoice discount from the dealer — different from a rebate for tax.
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Leave blank to use your state's cap or the typical amount.
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Nitrogen, VIN etch, protection packages… labeled negotiable in the output.
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Excluded from tax in some states when itemized separately.
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Needed in states with value-based registration (AZ VLT, NV GST).

Your rate, not a guess

We resolve the combined state + county + district rate for your ZIP — including the rules generic calculators miss, like Florida's surtax cap and Washington's 0.3% motor vehicle adder.

State rules, done right

Trade-in credit, rebate taxation, value-based registration — computed correctly per state. California taxes your rebate; Texas doesn't. That's real money.

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Doc fee benchmarks come from statute caps where they exist and from real buyer reports where they don't. Add yours and make it sharper.