Swap taxa fixa equivalente
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The 'Swap fixed equivalent rate' calculator helps determine the fixed rate equivalent to a financial swap based on the implicit average CDI (Interbank Deposit Certificate). This is useful for comparing swap contracts or understanding the effective cost of variable-rate operations. CDI is a Brazilian market indicator reflecting the average interest rate between banks.
The formula considers the relationship between the fixed rate agreed in the swap and the historical performance of CDI. The calculator converts this relationship into an implied average, presenting a value that represents the fixed rate equivalent to the variable return or cost over the period. This simplifies risk analysis and decision-making in derivative operations.
Use this tool when comparing different swap proposals, evaluating the impact of CDI fluctuations, or understanding the real cost of a contract. Remember that CDI is a market index and can vary with economic conditions and monetary policies.
Common challenges include CDI volatility affecting calculation accuracy and the need for regular adjustments in long-term periods. The calculator provides an estimate, but consult a financial expert for detailed analyses.
Frequently asked questions
Is CDI the only reference used in the calculator?
Yes, CDI is the primary index for swap calculations in Brazil, but other market factors can also influence results.
How does the calculator convert a variable rate to a fixed rate?
It uses historical CDI averages and the agreed fixed rate to estimate an equivalent value.
When should I use this tool?
Use it to compare swap proposals or analyze costs of variable-rate operations based on CDI.
Are the results exact?
The calculator provides an estimate, but CDI is volatile, so future results may vary.
Do I need a subscription to use this?
No, the tool is free and accessible to all users.