Tesouro Direto in Practice: Which Bond to Choose

Tesouro Direto (the Brazilian federal direct treasury bond program) is one of the most recommended investments for beginners, and for good reasons: a low minimum investment amount, security backed by the federal government, and a platform that is simple to track. In practice, however, many people visit the Tesouro Direto website and freeze when faced with the list of available bonds, not knowing which one to choose.

In this article, we will explain the differences among the main bonds—Tesouro Selic, Tesouro Prefixado, and Tesouro IPCA+—and show how to decide which one best matches your goal, whether it is an emergency fund, retirement, or a medium-term project.

Tesouro Selic: The Foundation of the Emergency Fund

Tesouro Selic is a post-fixed bond that tracks the Selic rate, Brazil's benchmark interest rate. It offers daily liquidity, meaning it can be redeemed at any time with the invested amount updated through that date, which makes it the most recommended choice for an emergency fund.

Its main advantage is stability: it experiences virtually no price fluctuations in the short term, unlike fixed-rate or inflation-linked bonds. For this reason, it is considered the lowest-risk bond among those available in Tesouro Direto.

Tesouro Prefixado: Predictability with Attention to Maturity

With Tesouro Prefixado (fixed-rate Treasury bond), you know exactly what your yield will be at the time of purchase, provided you hold the bond until maturity. This is useful for anyone who has a goal with a specific date, such as buying a car three years from now.

The point to keep in mind is that, if redeemed before maturity, its price may have fallen due to mark-to-market adjustments, resulting in a loss if interest rates have risen since purchase. Therefore, it is best suited for those who are certain they will not need the money before the agreed-upon date.

Tesouro IPCA+: Protection Against Inflation

Tesouro IPCA+ pays a fixed interest rate plus the inflation variation measured by the IPCA (Brazil's official consumer price index), ensuring that the purchasing power of your money is preserved over time. It is an excellent option for long-term goals, such as retirement, since it shields the investor from inflationary erosion.

There are versions with and without semiannual coupon payments. Those that pay semiannual coupons can be attractive for anyone looking to supplement income, but they face greater impact from Income Tax over time, as each payment is taxed individually.

Mark-to-Market: Why Bond Prices Fluctuate

Many people are startled when they see the value of their bond fluctuate daily on the Tesouro Direto platform prior to maturity. This happens because of mark-to-market pricing, which reflects the bond's trading price if it were sold at that very moment, taking into account future interest rate expectations.

If you intend to hold the bond until maturity, these fluctuations do not matter much, because at maturity you will receive exactly what was agreed. The problem arises for those who need to sell before the term, running the risk of redeeming at an unfavorable time.

How to Choose the Ideal Bond for Your Goal

Choosing the right bond basically depends on two questions: when you will need the money and what your tolerance is for fluctuations along the way. For an emergency fund, Tesouro Selic is practically a unanimous choice among experts. For medium-term goals with a set date, Tesouro Prefixado can make sense if rates are attractive.

For long-term planning, such as retirement or funding children's education, Tesouro IPCA+ is usually the most recommended choice, precisely because it protects the real value of your money against inflation over decades.

Conclusion

There is no single Tesouro Direto bond that is best for everyone. The ideal choice depends on your time horizon, your objective, and your liquidity needs. Tesouro Selic protects the emergency fund, Tesouro Prefixado locks in a yield for defined horizons, and Tesouro IPCA+ ensures purchasing power over the long term.

The most important thing is to understand these differences before investing, avoiding early redemptions that can lead to losses due to mark-to-market pricing.

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