Summary
- Loan Amount: —
- Payment per Period: —
- Number of Payments: —
- Total Interest: —
- Total Repayment: —
Step-by-step
Explanation:
Amortization Schedule
| Period | Payment | Interest | Principal | Balance |
|---|
Auto Loan Calculator
Use this auto loan calculator to estimate the financed amount, periodic payment, total interest, total paid, and payoff timeline for a vehicle purchase. Enter the vehicle price, down payment, trade in value, financed fees, APR, loan term, payment frequency, and any extra payment to test realistic financing scenarios. For more borrowing tools and related financing pages, explore Loans.
Estimate monthly payment and amortization for an auto loan.
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What Is an Auto Loan Calculator?
An auto loan calculator helps you estimate how much you will borrow and what the repayment schedule may look like before you agree to dealer or lender financing. Instead of looking only at the sticker price, it measures the financed balance after subtracting down payment and trade in value and adding any financed fees.
This tool is useful when you want to compare loan offers, check affordability, or understand how rate and term changes affect total borrowing cost. It also shows how extra payments can shorten payoff time and reduce interest.
How Auto Loan Payments Are Calculated
The calculator first determines principal by subtracting down payment and trade in value from the vehicle price, then adding any fees that are financed into the loan. It then applies the amortized payment formula based on the periodic rate and the number of payment periods. If you are searching for an auto loan calculation step by step or how to calculate car loan payment manually, this section gives the manual calculation flow before the worked examples.
$$PMT = P \cdot \frac{r}{1-(1+r)^{-n}}$$
In this formula, $P$ is the financed principal, $r$ is the periodic interest rate, and $n$ is the total number of payment periods. When the rate is zero, the payment reduces to principal divided evenly across the term.
How to Use This Auto Loan Calculator
Start with the agreed vehicle price. Then enter any cash down payment, trade in credit, and fees you plan to finance. Add the APR, total term in months, and payment frequency used by the loan. If you want to model faster payoff, add an extra payment amount for each period.
Use the results to compare monthly affordability, total interest cost, and the effect of paying more than the scheduled amount. If you want a closely related buyer focused comparison page, you can also review the Car Payment Calculator.
Worked Examples
Example 1: Standard Monthly Auto Loan
This baseline scenario shows how a typical monthly car loan payment is built from price, down payment, APR, and term. It is useful when you want a clean starting point before testing trade-ins, extra payments, or fee financing.
Given
$$price = 35{,}000,\; down = 5{,}000,\; trade\_in = 0,\; fees = 0$$ $$APR = 7.5\%,\; m = 12,\; n = 60$$
Compute
Financed principal: $$P = price - down - trade\_in + fees = 35{,}000 - 5{,}000 - 0 + 0 = 30{,}000$$ Periodic rate: $$r = \frac{APR}{100\cdot m} = \frac{7.5}{100\cdot 12} = 0.00625$$ Payment formula: $$PMT = P \cdot \frac{r}{1-(1+r)^{-n}}$$ $$PMT = 30{,}000 \cdot \frac{0.00625}{1-(1.00625)^{-60}} \approx 601.26$$
Result
Payment per month: $601.26$
Total paid: $36{,}075.84$
Total interest: $6{,}075.84$
Takeaway: a lower financed principal directly lowers both monthly payment and total interest over the full term.
Example 2: Trade-In Credit and Financed Fees
This scenario explains why the financed loan amount can differ from the sticker price. Trade-in value reduces principal, while financed taxes and fees increase it.
Given
$$price = 42{,}000,\; down = 4{,}000,\; trade\_in = 6{,}000,\; fees = 1{,}500$$ $$APR = 6.2\%,\; m = 12,\; n = 72$$
Compute
Financed principal: $$P = 42{,}000 - 4{,}000 - 6{,}000 + 1{,}500 = 33{,}500$$ Periodic rate: $$r = \frac{6.2}{100\cdot 12} \approx 0.005167$$ Monthly payment: $$PMT = 33{,}500 \cdot \frac{0.005167}{1-(1.005167)^{-72}} \approx 563.90$$
Result
Financed principal: $33{,}500$
Payment per month: $563.90$
Total paid: $40{,}600.80$
Total interest: $7{,}100.80$
Takeaway: always evaluate financed principal, not only vehicle price, because credits and financed fees materially change payment and total cost.
Example 3: Extra Payment to Pay Off Faster
This compares the base plan versus adding a fixed extra amount each month. It is practical for users targeting lower total interest and a shorter payoff timeline.
Given
$$P = 28{,}000,\; APR = 8\%,\; m = 12,\; n = 72$$ $$extra\ payment = 100\;\text{per month}$$
Compute
Periodic rate: $$r = \frac{8}{100\cdot 12} \approx 0.006667$$ Base payment: $$PMT = 28{,}000 \cdot \frac{0.006667}{1-(1.006667)^{-72}} \approx 490.93$$ Accelerated payment: $$PMT_{extra} = 490.93 + 100 = 590.93$$
Result
Base monthly payment: $490.93$
Accelerated monthly payment: $590.93$
Expected payoff periods with extra payment: $58$
Total interest with extra payment: $5{,}762.57$
Total repayment with extra payment: $33{,}762.57$
Takeaway: extra principal payments do not change APR, but they reduce balance faster, which cuts interest accumulation and shortens payoff.
Example 4: 0% Promotional Auto Financing
This scenario models zero-APR promotional financing. With no interest component, repayment becomes straight-line principal distribution over the term.
Given
$$P = 24{,}000,\; APR = 0\%,\; n = 48$$
Compute
Since APR is zero, periodic payment is simple division: $$PMT = \frac{P}{n} = \frac{24{,}000}{48} = 500$$
Result
Payment per month: $500$
Total paid: $24{,}000$
Total interest: $0$
Takeaway: a true 0% offer eliminates interest cost, so the key comparison becomes rebate alternatives, term length, and monthly affordability.
Keep exploring in Loans or browse more tools in Finance and Calculators.
Auto Loan Calculator FAQs
Common questions about APR, trade-ins, down payments, financed fees, and amortization.
The calculator derives principal from vehicle price minus down payment minus trade-in value plus any fees that are financed into the loan.
Yes. A larger down payment lowers financed principal, which usually reduces both periodic payment and total interest over the life of the loan.
Enter the amount of trade-in credit that directly reduces financed balance. If part of trade-in is used elsewhere in the transaction, include only the portion applied to the loan.
The calculator uses $PMT = P \cdot \frac{r}{1-(1+r)^{-n}}$, where $P$ is financed principal, $r$ is periodic rate, and $n$ is the total number of payment periods.
Yes. Extra payments push more money toward principal sooner, which reduces future interest charges and can shorten the number of periods needed to clear the balance.
Include taxes or fees only if they are financed into loan balance. If they are paid upfront in cash, they should not be added to financed fees.