The short answer for Michigan buyers
A Michigan out-the-door estimate adds the vehicle amount, 6% tax, title, chosen registration/plate charges, entered dealer fees, and selected products. OTD is shown before trade equity and cash down; the remaining estimate is separate and is not called a financed balance.
How this Michigan estimate is calculated
The engine includes entered taxable documentary fee in the sales-tax base. A qualifying trade allowance may reduce that base up to $12,000 for 2026; payoff determines net equity, while optional products and other entered charges are listed separately.
Worked example from the live calculation engine
Example from the OTD engine: a $30,000 used-car price, $500 dealer discount, $250 taxable documentary fee, $10,000 trade allowance with $6,000 payoff, $2,000 cash down, title/lien, and selected registration produce an out-the-door price of $31,111.26. After $4,000 net trade equity and $2,000 cash down, the separate estimated amount remaining is $25,111.26; it is not a financed balance.
Common Michigan estimate mistakes
- Subtracting cash down from the quoted OTD price.
- Confusing gross trade allowance with net equity after payoff.
- Treating the covered-contract document-fee limit as a universal rule.
Useful Michigan guides
For the rule details behind these numbers, continue with a relevant Michigan guide:
Michigan out-the-door questions
What does out-the-door price include in Michigan?
The estimate adds customer vehicle price, Michigan tax, title/lien, selected registration and plate charges, entered dealer charges, and selected products.
Is OTD the amount left after my down payment?
No. OTD is displayed before trade equity and cash down. The separate estimated amount remaining is a planning subtraction, not a loan offer or financed balance.
How does a Michigan trade affect OTD?
A qualifying trade allowance may reduce taxable price up to $12,000 in 2026. Net trade equity (allowance minus payoff) is separately shown and affects the estimated amount remaining, not the displayed OTD.
Are documentary fees taxable in Michigan?
The supported Michigan dealer guidance treats documentary preparation as taxable; enter it in the documentary fee field so the tax engine includes it.
Is the $280 document fee cap universal?
No. The lower-of-5%-or-$280 rule is used only for the covered installment-sale contract context and 2025–2026 period. It is not presented as a universal cap for every transaction.
Can an actual buyer's order differ from this result?
Yes. Exact taxability, registration proration, title circumstances, plate eligibility, and contract lines can change the total. Compare each entered value with the written buyer's order.
Verified October 2026. Planning information only; final tax, title and registration treatment depends on the vehicle, transaction documents and Michigan agency determination.