Lease vs Buy Car Calculator — Total Cost + Break-Even Year
Compare buying vs leasing the same car over your actual stay length. The calculator shows total cost both ways + the break-even year — the ownership length where buying flips from worse to cheaper.
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Lease vs Buy Car Calculator
Year-by-year crossover
Cumulative cost of buying vs leasing across common stay durations. The break-even year — when buy crosses below lease — is highlighted.
| Stay | Buy net | Lease total | Difference | Winner |
|---|---|---|---|---|
| 1 yrBreak-even | $-21,883 | $7,400 | $29,283 buy | Buy |
| 2 yrs | $-8,767 | $12,800 | $21,567 buy | Buy |
| 3 yrs | $4,350 | $18,200 | $13,850 buy | Buy |
| 4 yrs | $17,466 | $25,600 | $8,134 buy | Buy |
| 5 yrs | $30,583 | $31,000 | $417 buy | Buy |
| 7 yrs | $40,183 | $43,800 | $3,617 buy | Buy |
| 10 yrs | $44,583 | $62,000 | $17,417 buy | Buy |
| 12 yrs | $44,583 | $72,800 | $28,217 buy | Buy |
Green rows: buying wins. Yellow row: break-even. The break-even year is the ownership length where buy flips from worse to cheaper than continuous leasing.
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What This Calculator Does
The Lease vs Buy Car Calculator answers the binary decision every new-car shopper faces: “Is it cheaper to lease or to buy this car, given how long I plan to keep it?” The calculator computes total cost both ways over your stay length, surfaces the dollar difference, and tells you the break-even year — the ownership length where buying flips from worse-than-leasing to cheaper.
Where most online lease-vs-buy tools are vendor-biased (dealer sites push leasing because the margins are higher; bank calculators push financing because that’s their product), this one uses transparent math you can verify against the source numbers. The math is simplified — no insurance, fuel, tax, or excess-mileage penalties (those are roughly equal both ways or excluded by design) — but the structural lease-vs-buy delta is accurate.
The Math: Two Parallel Cost Curves
Buy total over plannedYears
Where months_paid = min(plannedYears × 12, loanYears × 12) and resale_at_end = MSRP × (1 − depRate × plannedYears), floored at 5% MSRP. The “minus resale” line is the key — if you keep the car past the loan term, you stop paying P&I but still own the depreciating asset. If you sell at year N, you recover the resale value as cash.
Lease total over plannedYears
The first term accounts for paying a down payment each lease cycle (every leaseTerm months). The second is just continuous monthly payments. No equity at end — you return the car. That structural difference is why leasing is competitive at short stays (no equity loss to recover) and falls behind at long stays (no asset to keep).
A Worked Example — “The $40k Sedan”
Suppose you’re comparing a $40,000 vehicle:
- Buy side: $5k down, 7% loan, 5-year term, 12%/yr depreciation
- Lease side: $2k down per cycle, $450/month, 36-month term
Buy monthly P&I: $35k loan at 7% × 5 yrs = $693/mo. Cumulative cost over 5 years:
- Down: $5,000
- Payments: $693 × 60 mos = $41,580
- Gross: $46,580
- Resale at year 5: $40,000 × (1 − 12% × 5) = $16,000
- Buy net over 5 yrs: $30,580
Lease cumulative cost over 5 years (1.67 cycles → round up to 2 cycles):
- Down × 2 cycles: $4,000
- Monthly: $450 × 60 mos = $27,000
- Lease total over 5 yrs: $31,000
Difference: $31,000 − $30,580 = $420 in favor of buying. Razor-thin at 5 years. Run the same calc at year 7: buying becomes much cheaper because depreciation slows and the lease keeps paying. Run at year 3: leasing wins by $3-4k because depreciation eats too much of the buy side too fast.
The Break-Even Year
The most useful number the calculator returns. The break-even year is the first ownership year where buying becomes cheaper than continuous leasing. Below it, lease wins; above it, buy wins. For a typical $40k car:
- Year 1-2 (3 yrs or fewer): Lease wins by $2-5k — depreciation is brutal in early years, leasing avoids it.
- Year 3-5:Razor-close. The ‘sweet spot’ depends on the specific lease deal vs financing rates.
- Year 5-7 (typical break-even): Buy crosses ahead. Loan paid off, resale recovers ~25-40% of MSRP.
- Year 8+: Buy wins by $10k+. No more payments while the car still has value; lease keeps draining $450/mo.
Use the year-by-year crossover table in the side panel to see the exact crossover point for your specific inputs.
What’s NOT Included
- Insurance. Roughly equal both ways at the monthly level (slight edge to lease for new-car coverage). For full insurance modeling, use the True Cost Per Mile calc.
- Maintenance. Lease covers warranty in most states; buy starts paying after warranty ends (~3 years for new cars). Adds $500-2k/yr on the buy side at year 4+. Could swing the comparison by $5-10k at long stays.
- Fuel. Identical both ways for the same vehicle.
- Sales tax.Varies wildly by state. Some states tax the full purchase on buy + monthly tax on lease; others differ. Check your state’s rules.
- Excess-mileage penalties. If you drive more than the lease allowance (typically 10-15k mi/yr), $0.15-0.30 per excess mile at lease end. Can add $1,000-3,000/lease cycle. Tilts toward buying for high-mileage drivers.
- Lease wear-and-tear charges.Variable — $200-1,500 per lease return depending on condition. Bundle into your mental “lease cost.”
When to Lease vs Buy — Quick Heuristics
Lease wins when:
- You upgrade frequently (every 3 years). Buy-then-trade absorbs the early-depreciation hit; leasing lets the leasing company eat it.
- You want predictable monthly cost. No surprise repair bills (warranty covers you).
- You drive under 10k miles/year. Standard lease allowances cover you, no excess-mile penalty.
- Business use with high deductible monthly. Some tax structures favor lease deductibility — check with a CPA.
- You value never having to sell a car. Lease end = drop off keys, no selling hassle.
Buy wins when:
- You keep cars long-term(8+ years). Depreciation slows; you’re paying off principal not rent.
- You drive 15k+ miles/year. Lease excess-mile penalties kill the math.
- You want full ownership flexibility. Modify the car, sell it whenever, keep it forever.
- Specific cars with strong residual values. Trucks, certain Toyotas/Hondas, some Tesla models — depreciation is slow, buying wins faster.
- Cash buy. No interest expense; the comparison is just down + maintenance vs lease total. Buy almost always wins past year 4.
Common Mistakes
- Lying about how long you’ll keep it. The most expensive mistake. Buyers overestimate (“forever car”); leasers underestimate (“just for now”). Median US homeowner stays 8-9 years; median car owner is similar. Be honest in the planned-years input.
- Ignoring lease cycles. A 36-month lease over a 10-year horizon is 3+ down payments, not just one. The calculator handles this automatically.
- Comparing different cars.The calc assumes you’re comparing the SAME car under both paths. Comparing a $40k buy vs a $30k lease isn’t lease vs buy — it’s a different-vehicle comparison.
- Using generic lease estimates.“Average lease is $400/mo” isn’t enough — get a specific quote from a dealer for the exact car. Lease pricing varies dramatically by captive-vs-bank financing, residual setups, and incentives.
- Forgetting depreciation isn’t linear. The calc uses linear annual depreciation as simplification. Real curves are front-loaded — year 1 is ~20%, then ~12-15%, then slower. The linear approximation is reasonably accurate over 5-year windows but understates buy-side cost at very short stays (1-2 years).
Save and Share
Click Saveto name each scenario (“Toyota RAV4 5yr buy,” “BMW 330i 36mo lease”) and store in your browser. Up to 5 saves per calculator. Useful for comparing the same car at different stay lengths or different cars at the same lease/buy decision point.
Click Share to copy a URL with all your inputs encoded — useful for sending the exact scenario to a partner, accountant, or to walk into a dealer with concrete numbers. Click Print for a clean 1-page summary.
Related Tools
- True Cost Per Mile Calculator — after deciding lease vs buy, see the all-in driving cost (including depreciation, insurance, maintenance, fuel) under your chosen path.
- Loan EMI Calculator — for the buy side, full amortization including extra-payment modeling and interest savings.
- Can I Afford This? — sanity-check that the all-in vehicle cost fits your monthly budget, regardless of which path you choose.
- Compound Interest Calculator — model the opportunity cost of the cash down payment if invested at 7% over the same horizon.
How to Read the Verdict
The decision hinges on your honest hold length vs the calculator’s break-even year. Almost every “leasing is throwing money away” take is wrong if your true hold length is short; almost every “just lease” pitch is wrong if you’ll keep the car 7+ years.
- Hold length below break-even by 1+ year.Lease — buying loses to depreciation and you’ll bail before the loan payoff arrives.
- Hold length above break-even by 2+ years. Buy — every year past break-even is pure savings. The post-loan-payoff years (roughly 6-10) are where buying dominates by tens of thousands.
- Hold length within ±1 year of break-even. Tied — pick on flexibility. If you change cars on a 3-year rhythm and want the latest tech, lease; if you’d rather drive a paid-off car for years, buy.
- You drive 18,000+ miles/yr.Bias hard toward buying — lease excess-mileage penalties ($0.20-0.25/mi) wipe out the lease’s low-payment advantage by year 3.
Frequently Asked Questions
The most common questions we get about this calculator — each answer is kept under 60 words so you can scan.
What's the formula for total buy cost?
Buy total = down payment + (monthly P&I × months paid) − resale value at end. Months paid = min(plannedYears × 12, loanYears × 12). Resale = MSRP × (1 − depreciationRate × plannedYears), floored at 5% MSRP. The 'minus resale' is the key — if you sell at year N, you recover that money.What's the formula for total lease cost?
Lease total = ⌈plannedYears × 12 ÷ leaseTerm⌉ × leaseDown + leaseMonthly × plannedYears × 12. The first term accounts for paying a down payment each lease cycle (every leaseTerm months). The second is just continuous monthly payments. No equity at end — you return the car.What is the 'break-even year'?
The first ownership year where buying becomes cheaper than continuous leasing. Below the break-even year, lease wins (you avoid the early-depreciation hit and have flexibility). Above it, buy wins (resale equity outweighs the additional financing cost).Why does the planned-stay length matter so much?
Because the resale value at the END of your stay is the buy side's only 'recovery.' Sell at year 3 and the car has dropped 35-40% — you eat that loss. Sell at year 8 and most of the depreciation has already happened (the curve flattens), so the per-year loss is much lower. The longer you keep it, the more buying wins.What's NOT included in the calculation?
Insurance, maintenance, fuel, sales tax, excess-mileage penalties, lease wear-and-tear charges. These are roughly equal under both paths (or excluded by design as out-of-scope). Adding them would obscure the structural lease-vs-buy difference, which is the calculator's core question.What about excess mileage on a lease?
Standard leases include 10-15k miles/year; over that, $0.15-$0.30/mile penalty at lease end. If you drive >15k mi/yr, this can add $1,000-$3,000 per lease — meaningfully tilts the calc toward buying. Consider this 'hidden lease cost' separately when interpreting the result.Why use a linear depreciation model?
For simplicity. Real depreciation is front-loaded — year 1 typically loses 20-25%, then 12-15% in years 2-5, then 8-10% in years 6+. The linear model averages this. For a more accurate break-even at short stays (1-2 years), expect actual depreciation to be HIGHER than linear shows, which means buy is even worse at short stays.What's the break-even year typically?
For a typical $40k car at 7% loan, 12% annual depreciation, $450/mo lease: break-even is usually 5-7 years. Shorter than 5 years, lease wins; longer, buy wins. Highly variable by specific lease deal — captive lessors (like BMW Financial Services) often have aggressive lease terms that push break-even out to 8-10 years.What about 'one-pay leases' or buy-out at end?
One-pay leases (single upfront payment) usually have lower effective monthly cost; model by setting leaseDown = total payment and leaseMonthly = 0. Lease buy-out at end (buy the car for the residual value) converts your lease into a buy at year N — separate calculation; usually only worthwhile if the residual is below market value (rare).Should I always buy if I'd keep the car a long time?
Usually yes, but check the math. Some specific scenarios where leasing wins even at 8+ years: rapid-depreciation segments (luxury European, electric vehicles before subsidies), or when you HEAVILY value driving a new car every 3 years (the 'newness' factor isn't captured by the calc).Can I save scenarios for multiple cars?
Yes — click Save under the result, name each scenario ("Toyota RAV4 buy 5yr," "BMW 330i lease 36m") and store in your browser. Up to 5 saves per calculator. Useful for comparing different cars at the same lease/buy decision point.What if I want to buy the leased car at end?
Then it's effectively a buy with a delayed start. Lease for 3 years → buy at residual at year 3 → keep through year N. This 'lease-then-buy' path is sometimes economically equivalent to financing from year 1 (depending on residual setup), and sometimes worse (residual above market = bad deal). Run the buy calc separately at the post-lease purchase price to model.