Car Loan Calculator - Auto Loan Payments

About Car Loan Calculator

Car Loan Calculator is a completely free online tool that helps you Car loan monthly payment + interest. Whether you are a casual user or a professional, you can use it instantly without installing any software.

Whether you are planning to buy a car, working at a dealership, or budgeting for a vehicle purchase, you can estimate monthly payments and total interest quickly.

How to Use

1. Enter the vehicle price in the "Car Price" field.
2. Enter your down payment amount or percentage.
3. Enter the loan term (years) and annual interest rate.
4. Click "Calculate" to see your monthly payment, total interest, and repayment plan.

Car Loan Calculator FAQ

How long can a car loan be? Is a longer term always cheaper?

Terms usually run 1-5 years, with 3 years the most common; a few lenders go longer. Stretching the term lowers the monthly payment but raises total interest — it is a trade of total interest for monthly breathing room, not a free win. On a $21,000 loan at 4.5%: 3 years costs $624.69/month with $1,488.67 total interest, while 5 years drops the payment to $391.50/month but pushes total interest to $2,490.20 — roughly $1,002 more for about $233 less per month.

What is a typical car loan rate? New vs used

In 2026 new-car financing generally lands in the 3.5%-5.5% APR band, with manufacturer-subsidized promotions dipping to 0%-2%. Used-car loans typically run 1-3 percentage points higher (commonly 6%-9%) because of resale-value uncertainty and collateral risk. Your final rate also depends on credit score, down payment size, term length, and whether you use the manufacturer's captive finance arm, which is usually where the subsidized offers live.

Equal-installment or equal-principal — which should I pick?

Equal-installment (amortized) holds the payment flat, so budgeting is easy; equal-principal pays down a fixed slice of principal each month, so the payment shrinks over time and total interest is slightly lower. On $21,000 over 3 years at 4.5%: equal-installment is a flat $624.69/month with $1,488.67 total interest; equal-principal starts at $662.08 and ends at $585.52, with $1,456.88 total interest — only about $32 saved. On a loan this size the gap is trivial, so choose based on monthly cash flow rather than the small interest difference.

Are dealer "0% APR" deals actually a good value?

Not automatically. Zero-percent offers are subsidized by the manufacturer or dealer and often carry conditions: a bigger required down payment, a shorter term, or costs quietly recovered through finance fees, mandatory dealer-arranged insurance, or bundled accessories. The reliable test is to total every dollar out the door (price + fees + insurance + add-ons + interest) and compare it against financing at a normal rate while negotiating a larger cash discount. Quite often, waiving 0% APR in exchange for a lower price wins on total cost.

Is there a penalty for paying off a car loan early?

It depends on your contract. Some banks and captive lenders charge 1%-5% of the remaining balance as a prepayment penalty; others only permit penalty-free payoff after 6-12 months of on-time payments. Keep in mind that with equal-installment loans most interest is collected early — prepaying late in the term saves relatively little, and the penalty can exceed the interest you would still avoid. Run both numbers before deciding.

What down payment should I make? 20% vs 50%

On a $30,000 car over 3 years at 4.5%: putting 20% down ($6,000) leaves $24,000 financed at $713.93/month with $1,701.34 total interest; putting 50% down ($15,000) leaves $15,000 financed at $446.20/month with $1,063.34 total interest. Raising the down payment by 30 points cuts the monthly payment by about $268 and total interest by about $638. A common guideline is to keep the car payment at or below 30% of monthly income, then decide how much cash you want tied up in the vehicle.

What factors affect my monthly payment?

Three inputs drive almost everything: the amount financed (price minus down payment), the APR, and the term. A longer term lowers the monthly payment but increases total interest; a larger down payment reduces both; and a lower APR reduces total interest without changing the principal. Trade-ins, taxes, registration and dealer fees usually sit outside the financed amount, so budget for them separately.

Car loan payment reference tables (equal-installment)

Both tables assume a $30,000 car with 30% down, i.e. $21,000 financed. Use them to get a sense of scale, then enter your real numbers in the calculator above.

Table 1: Monthly payment and total interest by term and rate

How to read it: each additional percentage point of APR adds roughly $340 of interest on a 3-year term. Going from 3 to 5 years saves about $233 per month but costs about $1,002 more in interest at 4.5%. If monthly cash flow is tight, the longer term helps; if total cost is what you care about, the shorter term wins.

Table 2: Effect of down payment ($30,000 car, 3 years, 4.5%)

How to read it: moving from 30% to 50% down lowers the payment by about $178 and total interest by about $425. A smaller down payment is not automatically wrong — if your cash earns more elsewhere or you prefer keeping a buffer, the deciding factor is whether the monthly payment stays comfortably within your budget.

Table 3: Equal-installment vs equal-principal ($21,000, 3 years, 4.5%)

How to read it: the two methods differ by only about $32 in total interest, while equal-principal asks for roughly $37 more in the first month. Because auto loans are relatively small and short, this choice should follow your cash-flow preference rather than the marginal interest saving.

Three worked examples

Example 1 (baseline): $30,000 car, 30% down ($9,000), $21,000 financed, 3 years, 4.5% APR, equal-installment → $624.69/month; total paid $22,488.67, of which $1,488.67 is interest.

Example 2 (stretching the term): same deal over 5 years → the payment falls to $391.50/month, but total interest climbs to $2,490.20. You save $233.19 each month and pay $1,001.53 more in interest overall.

Example 3 (bigger down payment): $30,000 car with 50% down ($15,000), $15,000 financed, 3 years, 4.5% → $446.20/month with $1,063.34 total interest. Versus the 30%-down case, that is $178.49 less per month and $425.33 less in interest.