Calculator CDI

Calculate CDI investment returns with period and tax options

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About This Tool

This CDI Calculator helps you compute the returns on investments based on the CDI (Certificado de Depósito Interbancário) rate, which is a benchmark interest rate in Brazil. Enter your initial investment amount, CDI rate, investment period (in days, months, or years), and applicable tax rate to calculate the final amount, gross profit, tax amount, and net profit. The tool performs accurate compound interest calculations and provides clear, detailed results for financial planning.

Save your calculation history with a free account

How to Use

Enter the initial investment amount in the currency field.
Input the CDI annual rate as a percentage (e.g.,
5 for
5%).
Select the investment period and choose the unit (days, months, or years).
Enter the tax rate as a percentage that applies to your profit (e.g., 15 for 15%).
Click the 'Calculate CDI Returns' button to see detailed results including final amount, gross profit, tax, and net profit.
Use the 'Reset' button to clear all fields and start over.

Frequently Asked Questions

Find Quick Answers

What is CDI?

CDI (Certificado de Depósito Interbancário) is a benchmark interest rate used in Brazil for interbank loans and as a reference for many financial investments, similar to the SELIC rate.

How is the CDI calculation performed?

The calculator uses compound interest formula: Final Amount = Initial Investment × (1 + (CDI Rate/100))^(Period in years). For days/months, it converts to years. Tax is applied to the gross profit: Net Profit = Gross Profit × (1 - Tax Rate/100).

What tax rate should I use?

Use the applicable tax rate for your investment type (e.g., income tax on financial investments in Brazil). If unsure, consult a financial advisor or use 15% as a common rate for illustration.

Can I calculate for different period units?

Yes, you can select days, months, or years. The calculator automatically converts to years for accurate compound interest calculations.

Need to run multiple calculations?

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