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Auto Lease vs. Buy Calculator

Compare the exact out-of-pocket costs of leasing a vehicle versus buying it on a standard auto loan. Discover which option makes the most financial sense for your driving habits.

Auto Lease vs. Buy Calculator

Compare the true out-of-pocket cost of leasing versus buying on an auto loan, including sales tax, acquisition fees, and residual equity. The buy option uses a separate loan term (typically longer) for a realistic payment comparison.

Vehicle & Deal Terms
$

MSRP or negotiated

$

Applies to both options

%

Your state/county rate

mo

Comparison window (mo)

🚗 Buy (Auto Loan)
%
mo

Buyers often finance 48–72 months (longer than lease)

📋 Lease
%

Car's predicted value at lease end (55% typical)

MF × 2400 = 6.00% APR

$

Dealer/lender upfront fee — not negotiable, adds to lease cost

BUY: Loan = $32,000 at 6% APR for 60 months | Tax = $2,450
Monthly P&I = $618.65 | Cash at 36mo = $27,721 | Equity = $19,250 | Net = $8,471
LEASE: Cap Cost = $32,000 | Residual = $19,250 (55%) | Acq Fee = $695
Dep = $354.17 | Finance Fee = $128.13 | Tax = $24.79/mo → Monthly = $507.08
Total Lease = $3,000 down + $695 acq fee + ($507.08 × 36) = $21,950
Buy / Mo
$618.65
60-mo loan payment
Buy Net Cost (36mo)
$8,471
Cash spent − equity
Lease / Mo (w/ tax)
$507.08
incl. depreciation + finance + tax
Total Lease Cost
$21,950
down + acq fee + 36 payments
Buying wins by $13,479 in net cost over 36 months — including $19,250 of equity retained.
Net cost compares: Buy (cash paid − residual equity $19,250) vs Lease (all-in cash including acq fee & tax)
Side-by-Side Comparison
MetricBuyLease
Down Payment$3,000$3,000
Acquisition Fee$0$695
Sales Tax$2,450$893 (spread)
Monthly Payment$618.65 (60mo)$507.08 (36mo)
Total Cash (36mo)$27,721$21,950
Asset at End~$19,250 equity$0 (return car)
Net Cost (36mo)$8,471$21,950
Buy Rate / APR6.00%6.00% equiv.
Mileage FreedomUnlimitedTypically 10–15K/yr cap

Practical Example

$35K car, $3K down, 7% tax, 36-month lease / 60-month buy:
Buy: Tax = $2,450. $32K financed at 6% / 60mo → ~$618/mo. Cash after 36mo = $3K + $2,450 + ($618 × 36) = ~$28,700. Equity ≈ $19,250. Net ≈ $9,450
Lease: $695 acq fee. $32K cap / $19,250 residual → Dep $354 + Finance $128 + Tax ~$25 = ~$507/mo. Total ≈ $21,900

Net Cost verdict: Buying's $9,450 net cost is far better than leasing's $21,900 — but requires a higher monthly commitment ($618 vs $507) and you carry the loan for 60 months. The right answer depends entirely on how much you value monthly cash flow vs. long-term equity.

💡 Field Notes

  • The money factor is a stealth APR: Dealers rarely quote MF as a rate because it looks tiny (0.0025 vs. 6.0%). Always convert: MF × 2400 = APR. Compare it head-to-head with your best bank auto loan rate before signing.
  • The acquisition fee is non-negotiable and unavoidable: Every manufacturer-backed lease has an acquisition fee ($595–$1,095) set by the finance arm. It is not listed in the monthly payment but is a real day-one cost. Always include it in your lease total cost calculation.
  • Buy loan term vs lease term creates an asymmetric comparison: Most car buyers finance 60–72 months; most leases are 36 months. This means comparing monthly payments is an unfair comparison — a 72-month buy payment looks lower than a 36-month lease. The correct comparison is net cost over the same time window using equity as an offset.
  • Sales tax treatment varies by state: Most states tax monthly lease payments. About half tax the full purchase price at time of sale. A few states tax only the capitalized cost depreciation on leases. This calculator applies a simplified tax model. Verify your state's lease tax treatment with your dealer before finalizing numbers.
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What is Automotive Financing and Depreciation Mechanics?

Choosing between leasing and buying comes down to a battle between monthly cash flow and long-term equity. Leasing allows you to only pay for the depreciation of the vehicle during your term — the difference between what the car is worth today and what it will be worth when you return it — but leaves you with zero ownership at the end. Buying finances 100% of the vehicle's value but builds equity that can be applied toward the next vehicle.

Mathematical Foundation

Money Factor Conversion
Annual Interest Rate=Money Factor×2400Annual\ Interest\ Rate = Money\ Factor \times 2400
Money FactorMoney\ Factor= The decimal used by dealers and manufacturer finance arms to calculate the monthly finance charge on a lease. The money factor is the lease equivalent of an interest rate, but expressed as a tiny decimal (e.g., 0.0025) to obscure the true rate. Multiplying by 2400 converts it to an annual percentage rate suitable for direct comparison against auto loan APRs.
24002400= The standard conversion constant. Derived from 2 × 12 months × 100 (to convert decimal to percentage). This factor is universal across all automotive leases in the United States, regardless of manufacturer or vehicle type.
Monthly Lease Payment
PMTlease=Cap Cost−ResidualTerm+(Cap Cost+Residual)×MFPMT_{lease} = \frac{Cap\ Cost - Residual}{Term} + (Cap\ Cost + Residual) \times MF
Cap CostCap\ Cost= Capitalized cost — the negotiated purchase price of the vehicle minus any down payment. This is the 'loan amount' equivalent for a lease. Unlike a loan where you repay 100% of the financed amount, in a lease you only pay the depreciation — the difference between cap cost and residual.
ResidualResidual= The predicted residual value of the vehicle at the end of the lease term, expressed as a dollar amount (= Vehicle Price × Residual %). Set by the manufacturer's finance arm based on historical depreciation data and remarketing considerations. A higher residual means lower depreciation payments.
MFMF= Money Factor — the lease finance rate expressed as a small decimal. Applied to the sum of cap cost and residual (not just the outstanding balance), which slightly overstates the effective interest cost compared to a simple interest loan calculation.

Laws & Principles

  • Leasing almost always results in a lower monthly payment, but is mathematically more expensive over a 10-year horizon because you are perpetually renting with no equity accumulation. A person who buys a $35,000 car every 10 years pays for 3.5 years of financing and drives for 6.5 years for free. A perpetual lessee pays a lease payment every single month with no end date. The only exceptions to this rule are: heavy mileage penalties avoided, business tax deductibility of the full lease payment, and always driving under factory warranty with no maintenance exposure.
  • If you drive more than 15,000 miles a year, mileage penalties usually destroy the financial viability of a lease. Most standard leases allow 10,000–12,000 miles per year. Overages are charged at 15–25 cents per mile. A driver who exceeds the limit by 5,000 miles/year over a 36-month lease faces a $2,250–$3,750 penalty at turn-in — often wiping out the entire monthly payment savings that made the lease attractive in the first place. Always calculate your expected mileage overage cost before signing any lease.
  • The negotiable price matters as much for a lease as for a purchase. Many lessees incorrectly assume the MSRP is fixed for a lease. The cap cost is negotiable — it is the agreed-upon purchase price of the vehicle. Negotiating $2,000 off the cap cost on a 36-month lease reduces your monthly payment by approximately $55/month ($2,000 / 36). This is the same savings as buying an equivalent car. Dealers may resist negotiating lease cap costs precisely because lessees focus only on the monthly payment.
  • Gap coverage is essential on any lease. If a leased vehicle is totaled in an accident, standard auto insurance pays the actual cash value of the vehicle at the time of the accident — which may be significantly less than the remaining balance owed on the lease. Gap (Guaranteed Asset Protection) insurance covers this difference. Most manufacturer-backed leases include gap coverage automatically (check your contract), but third-party leases from dealers or banks often do not. Always verify gap coverage and purchase it if not included — the cost is typically $200–400 for the lease term.

Step-by-Step Example Walkthrough

" A buyer wants a $35,000 car for 36 months with $3,000 down, comparing a 6% APR auto loan versus a lease with 55% residual and a 0.0025 money factor. "

  1. 1. BUY: Loan amount = $35,000 - $3,000 = $32,000. Monthly rate = 6% / 12 = 0.50%. PMT = $32,000 × (0.005 × 1.005³⁶) / (1.005³⁶ - 1) ≈ $973/month.
  2. 2. LEASE: Cap cost = $32,000. Residual = $35,000 × 55% = $19,250.
  3. 3. Monthly depreciation fee = ($32,000 - $19,250) / 36 = $354/month.
  4. 4. Monthly finance fee (rent charge) = ($32,000 + $19,250) × 0.0025 = $128/month.
  5. 5. Total monthly lease = $354 + $128 = $482/month.
  6. 6. Total buy cost = $3,000 + ($973 × 36) = $38,028. Total lease cost = $3,000 + ($482 × 36) = $20,352.
  7. 7. Lease saves $17,676 in cash — but buyer owns a car worth ~$19,250 in month 37.
Final Result: The lease is approximately $482/month versus $973/month to buy — dramatically cheaper on a cash-flow basis. However, the buyer exits month 37 owning an asset worth $19,250, while the lessee writes another check and starts over. Over 10 years, the buyer builds over $33,000 in rolling equity; the lessee accumulates nothing.

Quick Answer: Is it cheaper to lease or buy a car?

On a monthly cash-flow basis, leasing is almost always cheaper — typically 30–50% lower monthly payments because you only finance the depreciation, not the full vehicle price. On a total lifetime cost basis, buying is almost always cheaper if you keep the vehicle beyond the loan payoff date. The break-even point: if you would drive the purchased vehicle for at least 2–3 years after the loan payoff (combined ownership window of 7–8+ years), buying wins. If you would trade the vehicle every 3 years regardless, the comparison is much closer — and leasing can actually win on a per-month basis even accounting for no residual equity. Money factor to APR: MF × 2,400 = APR. A money factor of 0.00200 = 4.8% APR. Always convert and compare directly to loan APR offers before signing. Dealers rarely volunteer this conversion.

Money Factor vs. APR & Typical Residuals by Vehicle Segment

Money Factor (MF) Equivalent APR Market Context Typical 36-mo Residual % Monthly Lease Impact (per $30k vehicle)
0.00050 1.2% Manufacturer incentive / subvented rate 55–60% (trucks, popular SUVs) ~$15/mo finance charge
0.00150 3.6% Below-average rate (good credit, strong brand) 50–55% (midsize sedans) ~$45/mo finance charge
0.00250 6.0% Market-rate lease (2024 average) 48–52% (compact, crossovers) ~$75/mo finance charge
0.00350 8.4% Higher-rate; luxury or weak credit tier 40–48% (luxury sedans) ~$105/mo finance charge
0.00450+ 10.8%+ Unfavorable; consider buying instead 30–40% (EVs, minivans) ~$135+/mo finance charge
Residual percentages are set by the manufacturer's finance arm, not the dealer. They are non-negotiable. A higher residual is better for the lessee (lower depreciation payment). The money factor IS negotiable on non-subvented leases — any markup from the buy-rate MF goes directly to the dealer as additional profit. Always ask for the base money factor (buy rate) and compare.

Pro Tips & Lease vs. Buy Decision Mistakes

Do This

  • ✓Negotiate the cap cost (selling price) before discussing lease terms — treat it exactly like a cash purchase negotiation. The monthly lease payment is driven by: (1) cap cost (negotiable), (2) residual (set by manufacturer, fixed), and (3) money factor (sometimes negotiable above the buy rate). Most lessees focus entirely on the monthly payment, which allows dealers to hide profit in the cap cost. First, negotiate the vehicle price down to within $200–$500 below MSRP (or at invoice price if possible). Apply that cap cost discount and then ask for lease terms. A $1,500 cap cost reduction saves ~$42/month on a 36-month lease — a $1,500 one-time sum vs. $1,500 spread over 36 months in perception, but the math is identical.
  • ✓Lease if you use the vehicle >50% for business — the entire lease payment (including the finance charge) is potentially deductible as a business expense. Under IRC §162, business lease payments are fully deductible as an ordinary business expense. There is an Inclusion Amount (IRS Publication 463 Appendix A) that partially offsets the deduction for luxury vehicles, but for most sub-$60,000 vehicles the inclusion amount is minimal ($200–$600 over the lease term). Compare to buying: Section 179 deductions are capped at $12,400 for passenger cars (2024). A $650/month lease payment at 60% business use = $468/month deductible = $5,616/year in deductions vs. a fixed $12,400 Section 179 deduction on purchase. The lease wins for vehicles used over 5–6 years because the ongoing deduction compounds.

Avoid This

  • ✗Don't put a large down payment (cap cost reduction) on a lease — it disappears if the vehicle is totaled. A $5,000 cap cost reduction upfront on a lease reduces your monthly payment by $5,000 ÷ 36 = $138/month — but if the vehicle is totaled in month 4, your insurance pays the ACV to the leasing company (not to you), and the $5,000 you put down is gone. You receive nothing. The same $5,000 invested elsewhere or kept liquid provides the same monthly payment reduction math without the loss-of-capital risk. Ideal down payment on a lease = $0. Pay the acquisition fee, first month, and applicable tax — nothing more.
  • ✗Don't underestimate mileage overages — they routinely eliminate all monthly payment savings. Standard lease limit: 10,000–12,000 mi/yr. Overage rates: 15–25 cents/mile. If you drive 18,000 mi/yr on a 12,000 mi/yr, 36-month lease: 6,000 × 3 = 18,000 excess miles × $0.20 = $3,600 balloon penalty at turn-in. That $3,600 converts to $100/month effective cost — often wiping out the entire payment advantage over buying. Buying high-mileage packages upfront ($0.08–$0.12/mile) is cheaper than paying overages, but still adds to the total lease cost. Rule: if you drive >15,000 mi/yr, buying is almost always the mathematically superior choice.

Frequently Asked Questions

What is a good money factor for a lease in 2024?

Money factor × 2,400 = equivalent APR. With the Fed Funds Rate at 5.25–5.50% in 2024, a good money factor is 0.00200–0.00250 (4.8–6.0% APR equivalent). Anything below 0.00150 (3.6%) is a manufacturer-subsidized subvented rate — exceptional. Anything above 0.00350 (8.4%) is unfavorable; a conventional auto loan is likely cheaper. Check Edmunds.com monthly lease rate tracker for current tier-1 approved money factors by manufacturer — these are posted publicly. Dealer markups above the buy rate are pure profit and should be resisted. Respond with: “Can you show me the base buy-rate money factor?” If the dealer claims MF is not negotiable, request the manufacturer's published program sheet. If they cannot produce it, walk out.

Can I negotiate a lower monthly lease payment?

Yes — but only through cap cost reduction and (sometimes) money factor reduction. The residual is fixed by the manufacturer. Three levers: (1) Negotiate the vehicle price below MSRP — every $1,000 off the cap cost saves $1,000 ÷ term months. On a 36-month lease: $1,000 off = ~$28/month savings. (2) Ask for the buy-rate money factor — if the dealer has marked it up, pushing back can save $30–$80/month on a mid-priced vehicle. (3) Apply manufacturer rebates to the cap cost — trade any available cash back or conquest incentives as cap cost reductions rather than taking them as separate cash. Cash rebates applied to cap cost have the same effect as negotiating that amount off the price. Do not accept manufacturer rebates as “bonus cash” post-lease separately; insist they reduce your cap cost.

What happens at the end of a lease — can I buy the car?

Yes — most leases allow a buyout at the residual value set in the original lease contract. If the vehicle's actual market value at lease-end exceeds the residual, you have positive equity: you can buy at the below-market residual and immediately resell for a profit, or refinance the buyout into a traditional auto loan. This is particularly valuable on trucks and popular SUVs that retain value above their residual values. Example: a $45,000 F-150 leased with a 55% residual ($24,750 buyout price) that retains 60% market value ($27,000) at lease-end gives you $2,250 in buyout equity. If market value is below the residual (common for EVs and luxury sedans), simply return the vehicle — the residual risk is entirely the finance company's. You never pay a penalty for returning a vehicle that has depreciated more than the residual predicted.

Is leasing a car worth it if I drive 20,000 miles per year?

At 20,000 mi/yr on a standard 12,000 mi/yr, 36-month lease: overage = 8,000 mi/yr × 3 yr = 24,000 excess miles at $0.20/mi = $4,800 penalty at return. That converts to $133/month in effective added cost. Most lease payment advantages over buying are $100–$200/month — meaning the overage penalty eliminates or reverses the cash-flow benefit entirely. Buying high-mileage packages (15,000 or 18,000 mi/yr allowances) reduces the penalty but adds ~$30–$60/month at signing. Verdict at 20,000 mi/yr: buying is almost always better. The one exception: if your employer pays a fixed mileage reimbursement (IRS rate: 67¢/mile in 2024), leasing and reimbursing overages from the allowance can still work mathematically — but it requires careful accounting. Ask your fleet/HR department to model both scenarios.

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