On April 15, 2026, SNID11 — the Suno Infra FI Debêntures fund listed on Brazil's B3 exchange — confirmed a distribution of R$ 0.13 per share, payable on April 24, 2026. That translates to an annualized yield of 15.04%, entirely exempt from Brazil's income tax for individual investors.
At the same time, the fund raised its guidance for the first half of 2026 to a monthly distribution range of R$ 0.12 to R$ 0.15 per share. This signal comes in a specific macro context: Brazil's central bank cut the Selic rate from 15% to 14.75% on March 18, 2026 — the first rate cut since May 2024 — and the market Focus survey projects the Selic will reach 12.25% by year-end 2026.
For investors navigating Brazilian fixed income, this creates a relevant decision point. Understanding what FI-Infra funds are and why infrastructure debentures occupy a unique position in the asset class is essential before drawing any conclusions.
What Is a FI-Infra Fund
FI-Infra stands for Fundo Incentivado de Investimento em Infraestrutura — an Incentivized Infrastructure Investment Fund. It is a regulated fund category created to give individual investors indirect access to infrastructure-linked debentures that would otherwise be difficult to purchase directly due to high minimum investment requirements and limited secondary market liquidity.
To qualify as an official FI-Infra, a fund must maintain at least 85% of its reference value invested in incentivized infrastructure debentures. This threshold is calculated using the lower of the fund's net asset value on the appraisal date or the average net asset value over the previous 180 days.
These funds were authorized to trade on the B3 starting in 2020, following the publication of CVM instruction 606. Since then, the segment has grown to approximately 20 listed funds, including SNID11 (managed by Suno Asset Management), JURO11 (Sparta), and DEBB11, among others.
SNID11 is one of the most-tracked funds in the segment. Since inception, the fund has accumulated total returns exceeding 66%, factoring in reinvested distributions — outperforming net-of-tax benchmarks including the CDI (36.6%), IDA-DI (42.4%), and the Infrastructure IDA-IPCA index (44.4%).
Why Infrastructure Debentures Are Tax-Exempt
The income tax exemption for individual investors in incentivized infrastructure debentures derives from Law 12.431, enacted on June 24, 2011. The law was designed to stimulate private financing for Brazilian infrastructure projects — transportation, energy, sanitation, logistics, and urban mobility.
The policy rationale: infrastructure companies need long-term capital for projects that take years to generate returns. To make this financing attractive, the Brazilian government waived taxation on earnings received by the individual investor at the end of the chain.
The exemption applies to both periodic interest payments (coupons paid by the debentures) and capital gains on the sale of fund shares in the secondary market. In practice, this means that if an investor sells FI-Infra shares at a profit, that gain is also tax-free.
For income tax declaration purposes, these earnings are reported under "Tax-Exempt and Non-Taxable Income" — there is a reporting obligation, but no payment due.
This creates a meaningful practical difference when comparing assets on a net-of-tax basis:
| Asset | Estimated Gross Rate | Income Tax | Net Rate |
|---|---|---|---|
| Tesouro Selic 2029 | ~14.55% p.a. | 15% (over 720 days) | ~12.4% p.a. |
| CDB 110% CDI (24 months) | ~16.1% p.a. | 15% | ~13.7% p.a. |
| LCI/LCA 92% CDI | ~13.5% p.a. | Exempt | ~13.5% p.a. |
| SNID11 (annualized yield) | 15.04% p.a. | Exempt (Law 12.431) | 15.04% p.a. |
Approximate estimates with CDI at 14.65% p.a. These figures do not constitute a guarantee of future returns.
How the 15.04% Yield Is Computed
The annualized yield of 15.04% is derived from the monthly distribution of R$ 0.13 per share relative to the fund's market price, then annualized.
The basic formula: (monthly distribution / share price) × 12. With a R$ 0.13 distribution and a share price trading around R$ 13.35, the monthly yield is approximately 0.97%, which compounds to ~15.04% annually.
It is worth noting that the yield fluctuates with the market price of the share. If the share price rises without a proportional increase in distributions, the yield falls — and vice versa. The guidance range of R$ 0.12–R$ 0.15 per month signals the manager's expectations for distributions over the semester, but it is not a contractual guarantee of fixed income.
Why the Falling Selic Cycle Matters for This Asset
The current macro environment creates a specific backdrop for FI-Infra funds. With the Selic at 14.75% and projected to decline to 12.25% by year-end 2026 (according to the Focus report, the central bank's weekly survey of market expectations), investors in simple floating-rate fixed income — such as Tesouro Selic or standard CDBs — will see their yields fall automatically as each rate cut takes effect.
Infrastructure debentures, by contrast, are predominantly indexed either to IPCA (inflation) + spread or CDI + spread. Those indexed to IPCA + spread offer inflation protection with a fixed real rate above it — and in a falling Selic environment, the market value of these debentures tends to rise, creating additional mark-to-market gains within the fund.
New issuances remain active: incentivized debenture issuances in Brazil totaled R$ 14.8 billion year-to-date in 2026, compared to R$ 25.4 billion in the same period of 2025. The lower pace partly reflects regulatory discussions around potential changes to the tax exemption framework for new issuances, which has increased demand for already-issued debentures that carry the existing exemption under Law 12.431.
What Infrastructure Projects Back These Debentures
When a FI-Infra like SNID11 purchases an incentivized debenture, it is essentially lending money to a company that will build or operate tangible infrastructure: a toll road, a power transmission line, a water treatment plant, a port, or an airport terminal.
These projects operate under government concession contracts with predictable revenue streams — based on tariffs or usage volumes — and long maturities. This gives infrastructure debentures different credit characteristics compared to ordinary corporate bonds. Historical default rates in the segment have been low, though not zero.
The portfolio typically holds dozens of positions across different issuers and sectors within infrastructure, which provides diversification against the performance of any single project.
The Key Risk: No FGC Protection
The most important thing any investor needs to understand about FI-Infra funds: they carry no FGC coverage.
The FGC (Fundo Garantidor de Crédito — Brazil's deposit guarantee fund) covers deposits and certain bank-issued securities (CDBs, LCI, LCA) up to R$ 250,000 per taxpayer ID per institution. Debentures are not bank instruments and are not eligible for FGC protection.
This means credit risk is real: if a company that issued debentures held in the fund's portfolio faces financial difficulties and defaults, there is a direct impact on the fund's income and net asset value. Diversification across many issuers reduces, but does not eliminate, this risk.
The principal risks in this asset class include:
- Credit risk: issuer default on debenture payments
- Liquidity risk: fund shares may trade with low volume during market stress
- Market risk: share price fluctuates with interest rate movements
- Sector concentration risk: heavy exposure to infrastructure regulation and government concession policy
These are not disqualifying risks — they are the risks an informed investor prices in when building a diversified fixed income portfolio.
Positioning FI-Infra Within a Fixed Income Portfolio
FI-Infra funds are not replacements for Tesouro Selic or FGC-covered CDBs. They are complements for investors who have already covered the liquidity and safety base and are looking to optimize tax efficiency and yield on a portion of their allocation.
A practical allocation framework to consider:
| Allocation | Asset | Role |
|---|---|---|
| Emergency reserve | Tesouro Selic or daily-liquidity CDB | Immediate liquidity, no credit risk |
| Inflation protection | Tesouro IPCA+ (long-term) | Guaranteed real return |
| Tax efficiency | LCI/LCA or FI-Infra | Income tax exemption |
| Recurring income | FI-Infra | Monthly distribution + exemption |
The proportions depend on the investor's risk profile, time horizon, and liquidity needs. FI-Infra funds make most sense for investors with a medium-to-long time horizon (two years or more) who do not depend on this portion of their portfolio for near-term spending.
At Royal Binary, the fixed income macro environment — rate cycles, credit market flows, debenture issuances — informs the broader analysis we apply to our trading operations. Sidnei Oliveira, founder of Royal Binary and a professional trader since 2019, built the platform around the principle that disciplined, data-informed decision-making applies equally whether you are trading actively or building a passive allocation. If you want to explore how managed trading complements a structured fixed income base, visit our platform to learn about our plans.
This content is for educational and informational purposes only. It does not constitute investment advice, nor an offer to buy or sell any security. Past performance does not guarantee future results. Consult a certified investment adviser before making any financial decision. Royal Binary LTDA, CNPJ 64.020.950/0001-60, Av. Paulista, 807, São Paulo, SP, Brazil.