Lease vs. Buy Calculator

What is a lease vs. buy calculator?

A lease vs. buy calculator totals the cost of leasing vs buying a car over your holding period. Buying usually wins past year four or five; leasing often costs less over a 36-month cycle.

How this calculator works

• Buying side: price, down payment, APR, loan term, years you’ll keep the car, and the resale value you expect when you sell.
• Leasing side: cash due at signing, the monthly payment you were quoted, and the lease term in months.
• Buy cost: down payment plus every loan payment through your horizon, minus resale at sale. Lease cost: signing cash plus every monthly payment, prorating the final partial cycle.
• Output: each path’s total, the dollar difference, a winner, and a year-by-year cumulative table showing how the gap opens or closes.
• The verdict is pure cumulative cash outlay — it does not weigh equity, flexibility, lifestyle, or opportunity cost.

How to use the result

1. Convert the difference to a yearly figure. If buying wins by $3,600 over six years, that’s $600 a year — about $50 a month — to weigh against the flexibility leasing buys you.
2. Stress-test the resale estimate before trusting a buy win. Drop it 10% and re-run: if the verdict flips, the race is closer than it looks.
3. Add back what the comparison leaves out: lease mileage overage (typically $0.15–$0.30 per mile past the cap), acquisition and disposition fees, insurance differences, and maintenance once the warranty ends.
4. Handle tax separately: most states tax each lease payment, but tax a purchase on the full price upfront. Work out sales tax on the purchase and add it to the buy side.
5. If leasing still looks right, get competing quotes, then check the best payment as a percentage of sticker — near 1% of MSRP is strong; above 1.5% usually means the deal is padded.

How does a lease vs buy calculator decide which is cheaper?

It totals the cash out each route over the same holding window. A typical car lease calculator prices one term; this one keeps lease payments running for as long as you hold the car. Leasing tends to cost less over short horizons — you only pay for the steepest depreciation years. Buying usually pulls ahead once the loan ends: payments stop, but the car is still worth something. The year-by-year table shows where the crossover lands — the honest way to answer “should I lease or buy” with your numbers instead of a rule of thumb.

Common mistakes

• Judging by the monthly payment. A lease payment is almost always lower — you’re renting, not building equity. The decision lives in the cumulative column, not the monthly one.
• Overestimating resale value. An optimistic resale flatters the buy side. Check what the same model actually sells for used before you enter a number.
• Stopping at year three. The lease side looks its best early; every year after the loan is paid off, buying gets relatively cheaper. Judge the whole window you plan to keep the car.
• Treating the verdict as the whole story. The result is cash outlay only — it doesn’t price equity, flexibility, mileage anxiety, or the fact that a leased car is never yours.

If the lease vs. buy car decision lands within a couple hundred dollars a year, choose the side that fits how you drive. If buying wins clearly, the next lever is the loan — term and APR decide how much interest eats into the gap. Work through the financing side in detail before you sign.