Mortgage payment calculator

Estimate a fixed nominal-rate mortgage payment with a monthly schedule. Rounded to cents with an adjusted final payment; fees and variable rates excluded.

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Set your data

Loan principal (€)

Fixed annual nominal rate (%) · up to 4 decimals

Monthly payments (1–600)

Result

Enter your data and run the tool. Your result will appear here.

Debt over time

Adjust the rate or term and see how the remaining balance and interest paid change.

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How to use the tool

Fill in these fields: Loan principal (€), Fixed annual nominal rate (%) · up to 4 decimals, Monthly payments (1–600).
Select “Calculate” to obtain the result.
Adjust the rate or term and see how the remaining balance and interest paid change.
Use the sliders in the calculator with a mouse, touch or the arrow keys. Use the calculator fields for precise values or values outside the sliders’ ranges.

Method and principles

P is the loan principal, n the number of monthly payments and A the payment. In the formula r is the monthly decimal rate: r = annual nominal percentage rate / 1200. For example, at 3.5% nominal annual interest, r = 0.035 / 12. It is not an effective annual rate.

Formula (r ≠ 0)

A = \frac{P \times r \times {(1 + r)}^{n}}{{(1 + r)}^{n} - 1}

r = 0

A = \frac{P}{n}

Result details

Result details
Parameter	Value
Total repayment	€300,373.59
Total interest	€100,373.59
Actual payments	300

Practical example

Input

Loan principal (€): 200000
Fixed annual nominal rate (%) · up to 4 decimals: 3.5
Monthly payments (1–600): 300

Result

€1,001.25

Limits and checks

Limits and checks
Parameter	Value
Monthly payments (1–600)	≥ 1; ≤ 600

Sources and further reading

Banca d’Italia · TAEG