Buy-side worksheet
Enter the dealer's numbers and yours side by side. Every total updates live — use the counter script at the bottom to push back with your own math, not theirs.
Leave both at 0 if you have no trade-in.
Every item here is optional. Toggle one on to see exactly what it adds to your out-the-door price and monthly payment — most are quoted at 2-4x fair market cost.
Doc fee stays with the dealer and is worth questioning. Title, registration, and filing fees are usually fixed by the state.
Dealers can mark up the real lender rate 1-2.5% and keep the spread. If you're not on the true 0% promo, ask for the buy rate and compare it here.
Manufacturers usually make you pick one. Compare total 5-year cost of each path.
Dealer quotes you a monthly payment instead of a price? Plug it in here — this backs out the vehicle price they're actually charging, so you can compare it to your target.