How to Calculate Total Lease Cost
Total lease cost is (monthly payment × months) plus due at signing plus fees that are not in the headline. A $299 payment is not cheaper than $349 if the first deal needs $4,000 cash and 10,000 miles while the second needs $1,500 and 12,000 miles.
By Oleg Dreyzin · Updated 2026-08-13 · Published 2026-06-01
The formula
Use: total = (payment × term months) + due at signing + acquisition fee if not inside DAS + estimated disposition fee + expected excess-mileage charges. Then divide by months for an apples-to-apples monthly equivalent, including the cash you paid on day one.
Example A: $299 × 36 = $10,764, plus $3,999 DAS = $14,763. Monthly equivalent: $14,763 / 36 = $410. Example B: $349 × 36 = $12,564, plus $1,499 DAS = $14,063. Monthly equivalent: $391. The higher sticker payment is the cheaper lease.
Write the formula on the worksheet before you sit down. Salespeople optimize the number in the biggest font. You optimize the sum.
What “due at signing” actually contains
Due at signing (DAS) is a bundle: first month, maybe last month, acquisition fee, documentation fee, cap-cost reduction, and tax on some of those items. Ask for a line-item DAS. A round $2,999 often hides $1,000 of optional extra cash down you do not need.
Cap-cost reduction is a down payment on a lease. It lowers monthly depreciation but is not refundable. If the car is stolen in month two, that cash is gone except insofar as insurance pays the gap — and gap is not automatic.
If two quotes show the same payment but DAS differs by $1,500, that $1,500 is real money. Do not call them equal.
Mileage math
Allowed miles = annual allowance × years in the term. Excess = your expected miles minus allowed miles (if positive). Cost = excess × per-mile rate, often $0.15–$0.30. Buy extra miles up front only when the prepaid rate is cheaper than the turn-in rate and you are sure you will use them.
12,000 miles × 3 years = 36,000 allowed. You drive 14,000/year → 42,000 actual → 6,000 excess. At $0.25 that is $1,500. Add that to Example A and the $299 headline is even worse.
If you are unsure, take the higher allowance. Prepaid miles you do not use are still cheaper than a surprise bill at turn-in plus wear charges.
| Your annual miles | 12k allowance cost | 15k allowance (typical extra payment) |
|---|---|---|
| 10,000 | $0 overage | Slightly higher payment, unused miles |
| 12,000 | $0 overage | Usually not worth paying up |
| 15,000 | 9,000 × $0.25 = $2,250 | Often cheaper than overage |
Fees people forget
Acquisition fees of $595–$1,095, disposition or turn-in fees of $300–$595, doc fees, and excess wear are the usual surprises. Some brands waive disposition if you lease another car from them. Do not count on a waiver unless it is in the contract.
Add a $395 disposition fee to every comparison unless the contract waives it. It is a last-month bill, not a maybe.
Registration and tax vary by ZIP. Ask for an itemized worksheet for your county. Our calculator on /compare leaves tax at zero unless you type it — we will not guess your rate.
Money factor versus APR
Money factor × 2400 ≈ APR. A 0.00125 factor is about 3.0% APR. If the brand is advertising 0% purchase APR but a 0.0025 factor (~6%) on the lease, the lease is not “cheap money” — it is a residual and rebate product.
Always ask for the money factor as a decimal and the residual as a percent of MSRP. Those two numbers plus cap cost determine the payment. Without them you are shopping a poster.
A lower payment achieved by stretching to 39 months is not a better factor. Normalize term to 36 months when you can.
Use the on-site calculator
The compare page includes a client-side lease cost calculator. Nothing is posted to a server. Enter payment, months, DAS, miles, and overage rate to get total cost and a monthly equivalent you can write next to a second dealer’s quote.
Run both quotes through the same calculator so the only variables are the numbers the dealers gave you, not two different spreadsheets.
Then open the dealer specials page from the listing card and confirm the trim and expiration date still match.
Put two quotes through the same calculator
Enter dealer A and dealer B into the compare-page calculator with the same tax assumption (zero unless you have a taxed worksheet). The only variables that should change are payment, months, DAS, miles, and overage rate. If you change the formula between quotes, you are not comparing dealers — you are comparing spreadsheets.
A worked pair: Quote A $289 × 36 + $3,995 DAS + $395 disposition = $14,794. Quote B $339 × 36 + $1,495 DAS + $395 = $14,094. B wins by $700 before miles. If you drive 3,000 miles over the allowance at $0.25, add $750 to each; the ranking stays unless one quote included extra miles.
Print or screenshot the calculator totals. At the desk, people lose the DAS line under “we can make the payment work.” Your job is to keep the sum visible. The calculator never leaves your browser, so it is safe to use on a showroom Wi-Fi network.
Disposition, wear, and the second lease
Lease total cost is not only payment times months plus DAS. Add the disposition fee you will almost certainly pay, a realistic excess-wear number if you keep cars hard, and the second acquisition fee if you lease again at month 37. Those three lines are how a “cheap” 36-month ad loses a five-year race.
Disposition fees are often $350–$595 and are in the contract even when the specials page is silent. Some brands waive them if you lease another car from the same family. Do not count on the waiver unless it is written. If you might buy the car at residual, disposition may not apply — but then you need a residual that is actually a good buy versus the used market.
Excess wear is not the same as excess miles. Miles are a rate times overage. Wear is bumper scuffs, windshield stars, and tires below spec. If you return cars with four new tires, budget $800–$1,200 in today’s prices unless the contract already requires them. A dealer “we’ll take care of it” promise is not a line item until it is on a return inspection sheet.
Worked five-year view: two 36-month leases. First lease $14,794 as above. Second lease assume the same math plus another $695 acquisition inside DAS. Five-year cash is not $14,794; it is roughly twice that minus overlap if you turn the car early. Compare that sum to buying once and selling at month 60 with a conservative private-party number, not the trade offer the first desk quotes while you are sitting there.
Keep a running note with four totals: pretax lease sum, taxed lease sum if you have it, pretax buy, taxed buy. The compare-page calculator is for the lease side only and does not post anything to a server. For the buy side, selling price plus doc plus estimated tax is enough to rank two rooftops. If a manager wants to meet in the middle on monthly payment, ask them to change cap cost or selling price on the worksheet instead. Payment-only concessions usually mean they moved residual, miles, or term. Re-run the same formula after every reprint so a new sheet cannot quietly add $1,200 of products.
Common questions
- Should tax be in total lease cost?
- Yes for your budget. Monthly tax on the payment plus tax on DAS items varies by state. Ask for a taxed worksheet; our calculator leaves tax optional so we do not invent your rate.
- Is a one-pay lease cheaper?
- Sometimes the money factor is lower on a single payment. You also put more cash at risk. Compute total cost the same way: one-pay amount plus fees, then compare to the monthly-sum path.