How to estimate your loan
Enter the amount borrowed, monthly interest rate and number of payments. This Price simulation assumes fixed interest, monthly payments and the first payment after one full month.
Formula and example
Payment = P × i ÷ (1 − (1 + i)⁻ⁿ), where P is principal, i is the monthly percentage divided by 100 and n is the term. At zero interest, payment = P ÷ n. BRL 10,000 at 2% per month for 24 months gives a BRL 528.71 payment and BRL 2,689.06 interest.
Sources and assumptions
Sources accessed September 17, 2026: Banco Central fixed-payment methodology and Microsoft PMT documentation. These are financial identities, without statutory tables or market rates.
Privacy
Calculation happens in your browser. Shared links contain the entered amounts. Saving uses your account and the existing favorites flow; no bank details are requested.
Educational estimate
This is not a credit offer or approval. Payment dates, charges and contractual rounding can change payments. Compare the CET supplied by the lender.
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Frequently asked questions
Can I enter an annual rate?
The input requires a monthly rate. Equivalent annual interest is (1 + i)¹² − 1, where i is the monthly decimal rate; dividing an effective annual rate by 12 does not yield the equivalent monthly rate.
Does this include CET?
No. Brazilian CET includes fees, taxes and other charges. This estimate includes only principal and the entered interest.
What happens at zero interest?
The borrowed amount is divided equally by the number of months, without interest.
Does a longer term lower the cost?
For the same positive rate and principal, a longer term generally lowers the payment but increases total interest.
Why might the bank quote differ?
Contracts may include taxes, insurance, fees, irregular dates and rounding each payment. This schedule is a mathematical estimate.