About this tool
Money questions usually come in two kinds: how much will my money earn, and how much will this debt or purchase cost me. Here the five calculators that answer them live together: compound interest for savings and goals, simple interest, Brazilian fixed income (CDB, LCI/LCA, Tesouro and savings, net of tax), loans with Price or SAC tables, and cash or installments. Choose what you want to simulate at the top. Each tab keeps what you typed while the page is open, and everything is worked out in your browser: nothing is sent to a server or kept in the address. These are simulations, not investment advice.
How to use it
- 1 Choose at the top what you want to simulate: compound interest, simple interest, fixed income, loan, or cash or installments.
- 2 Type the amounts, the rate and the time.
- 3 Read the result, the chart and the table, and copy a link if you want to share the simulation.
- 4 Switch tabs at any time: each calculator keeps what you typed while the page is open.
Frequently asked questions
Are the amounts I type saved or sent anywhere?
No. They stay in your browser. They are not sent to a server, not saved and not kept in the page address; only the link you choose to copy carries them.
Do the old calculator pages still exist?
Yes. Compound interest, simple interest, fixed income, loan and cash or installments each keep their page, which opens this same simulator on its own tab.
Where do the fixed income rates come from?
CDI, Selic, IPCA and the savings rate come from the Banco Central do Brasil when the site is built. You can change any of them.
Where are the ethanol or petrol, electricity and shopping list tools?
They have their own pages, because they answer household questions rather than interest and debt.
Embed this tool
Add this free tool to your own website — copy the code below. It stays up to date automatically.
Tools for your site →