Calculadora de Poupança
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
r = 0,5%/mês se SELIC > 8,5%; r = 70% SELIC se SELIC ≤ 8,5%
About this calculator
The Savings Calculator simulates the yield of the Brazilian savings account (poupança), one of the most traditional investments in Brazil. It follows the official rules: when the Selic rate is above 8.5% per year, the savings account yields 0.5% per month; when Selic is equal to or below 8.5% per year, the yield is 70% of Selic. The tool calculates the future value based on initial deposit, monthly contributions, and term, showing the balance growth over time.
It works simply: you enter the initial amount, monthly deposit (if any), number of months, and the current Selic rate. The calculator applies compound interest with the corresponding monthly rate, updating the balance month by month. The result shows total invested, accumulated interest, and final balance. This helps visualize the power of compound interest even in a low-risk investment.
Use this calculator for short and medium-term goals, such as building an emergency fund, saving for a trip, or a down payment on a property. The savings account is suitable for those who prefer safety and liquidity, with no management fees. However, remember that in low Selic scenarios, the real return may be negative after inflation.
Important notes: the savings account is exempt from income tax for individuals, but its yield often does not beat inflation. Also, interest is credited monthly on the deposit anniversary. The calculator uses an average rate, but the exact amount may vary depending on the deposit date. Do not consider the savings account as a long-term investment for retirement, as there are options with higher returns.
Frequently asked questions
Is the savings account still a good investment in 2024?
It depends on the Selic rate. If Selic is above 8.5% per year, the 0.5% monthly yield (6.17% per year) can be good for an emergency fund. With low Selic, the yield is lower than inflation, losing purchasing power.
How is the savings account yield calculated?
When Selic is above 8.5% per year, the yield is 0.5% per month. When Selic is equal to or below 8.5% per year, the yield is 70% of Selic, divided by 12 to get the monthly rate.
Do I need to pay income tax on savings account earnings?
No, individuals are exempt from income tax on savings account earnings, as long as the total amount does not exceed legal limits (which are high).
What is the difference between a savings account and Tesouro Selic?
Tesouro Selic usually yields more than the savings account, but has regressive income tax and daily liquidity. The savings account is simpler and tax-free, ideal for those who want no bureaucracy.
Does the calculator consider the deposit anniversary?
The calculator uses the average monthly rate, but the exact yield depends on the deposit date. For accurate simulations, consider that money starts earning from the first day of the month following the deposit.