Embed an out-the-door calculator

Put a live out-the-door price calculator on a dealer site, publisher page, or credit-union article.

Live calculator

Prepared November 1, 2026. Estimates from official sources; not legal or tax advice. Confirm with the DMV.

Texas out-the-door price

Totals update as you type. Every fee links to its official source. A fee that is not verified is a field you fill in, not a guessed number.

Desk worksheet. Government fees and the tax base come from the same verified rules as the buyer calculator. Dealer charges are the amounts you enter.

State where the car will be registered Price you agreed on ($) Your trade-in value ($) Dealer doc fee ($)

Vehicle New Used

Trade-in payoff ($) Rebate ($) Rebate stays in the tax base

Financed (lien on the title) Down payment ($) APR (%) Loan term (months)

Before you agree

Ask for the out-the-door total in writing, with every fee named.
Compare the doc fee with the state rule shown under the field.
Optional products (nitrogen, etching, appearance packages) are not government fees.
Negotiate the out-the-door price, not only the monthly payment.
Check whether a trade-in or rebate changes the tax base in your state.

Doc fee rules by state · Check a quote you already have

Government lines above are the recorded state fees. Dealer charges are only what you typed. If the doc fee is over a verified cap, the note under the result says so.

Embed this on your site or use the data API

State breakdown

For dealers: one snippet, every state

Dealers get one line of code from their account. It shows a state picker for all 50 states and DC; changing the state reloads that state’s rules inside the widget, with county or city fields where the state needs them. Totals update as the shopper types, with no Calculate button.

Dealer embeds open in tax, title & license (TTL) mode by default: sales tax, title, registration, plates, and other government fees, plus your own dealer documentary fee line. You set the doc fee once in the dashboard (one amount, or per state). If it is above a verified state cap, the widget lowers it to the cap and says so. Prefer the full out-the-door total? Switch the mode to OTD in the dashboard.

data-mode="ttl" or "otd" — override the dashboard mode
data-doc-fee="225" — override the saved doc fee
data-state="CA" — preselect a state
data-states="TX,OK,LA" — limit the list
data-show-doc="0" — apply the doc fee without showing the field

Example (TTL, $225 doc fee):

<div data-otd-calc data-all-states data-mode="ttl" data-doc-fee="225"><a href="https://otdcalculator.com/">Tax, title and license calculator</a></div><script src="https://otdcalculator.com/embed.js" async></script>

The snippet in your dashboard carries your embed id, which applies your saved mode, doc fee, and branding. Request a free dealer trial.

Single-state calculator (free)

Put a free out-the-door price calculator on your website with one line of code. No account or plugin needed.

How to add it

Pick a state.
Copy the code.
Paste it into your page (WordPress: a Custom HTML block). The calculator resizes to fit.

State Embed code

Preview

Dealers on the Standard plan: the snippet in your dashboard includes your embed key, which adds your branding and removes the credit link.