Investing & Finance

Car loan calculator

Monthly installment and total amount for an annuity loan – with optional down payment and final installment.

Updated on Apr 21, 2026 Calculator, calculation path and examples on one page

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Calculator

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Calculation path

Step by step

  1. Determine the amount financed

    Formula: Purchase price − deposit + additional costs

    Result: €23,000.00

  2. Derive monthly interest

    Formula: Debit interest / 12

    Result: 0.408%

  3. Calculate annuity

    Formula: A = (K − final rate / (1 + i)^n) × i / (1 − (1 + i)^−n)

    Result: €432.99

Repayment history

Month Residual debt Interest portion Redemption
1 €22,660.93 €93.92 €339.07
2 €22,320.48 €92.53 €340.45
3 €21,978.63 €91.14 €341.84
4 €21,635.40 €89.75 €343.24
5 €21,290.75 €88.34 €344.64
6 €20,944.71 €86.94 €346.05
7 €20,597.24 €85.52 €347.46
8 €20,248.36 €84.11 €348.88
9 €19,898.06 €82.68 €350.30
10 €19,546.33 €81.25 €351.74
11 €19,193.15 €79.81 €353.17
12 €18,838.54 €78.37 €354.61
60 €0.00 €1.76 €431.22

Instructions

How to use this calculator correctly

How to use the calculator

  • Enter the purchase price, down payment, term and interest rate.
  • If applicable, add final installment and additional costs.

How to read the result

  • The monthly rate shows the current payment amount.
  • The total amount also takes into account the final installment and down payment.

Limits of the calculation

  • Special repayments and variable interest rates are not included.

Related guide: Classify car costs with fuel, electricity, credit and taxes

Examples

Typical calculations

28,000 euros, 5,000 euros deposit, 5 years.

Classic financing

monthly rate: €432.99

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35,000 euros, 7,000 euros deposit, 8,000 euros final installment.

With final installment

monthly rate: €507.47

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FAQ

Frequently asked questions

What is a final installment?

A final installment is a remaining amount due at the end that can reduce the current monthly payment.

Does the calculator also calculate 0 percent financing?

Yes. The financed amount is then distributed linearly over the term.

Are insurance or vehicle costs included?

No, the calculator only looks at the loan.

Why is the first monthly payment more interest-heavy?

At the beginning, the remaining debt is higher, which is why the interest portion is larger.

Is the calculator suitable for comparing multiple offers?

Yes, especially when comparing interest rate, term and final installment.

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Sources and notes

Rule status and context

methodology
Calculation as an annuity loan with optional final installment.