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The Lula Government Centralizes the Agenda by Unifying the IR at 17.5% on Financial Gains, Promising Simplification and Higher Revenue While Congress, Banks, Fintechs, and Investors Measure Political and Technical Strength in 2025, with Distinct Effects Between Short and Long Term and Sensitive Definitions in MP 1.303/2025
The Lula Government has placed at the center of the board the proposal for a single IR of 17.5% on financial gains through MP 1.303/2025. The measure abandons the regressive regime and aims for simplification and increased revenue, redesigning incentives for investment periods and pushing for a tough negotiation with Congress and the market.
In practice, banks, fintechs, and investors are engaged in a protracted dispute in 2025. The uniform tax rate benefits short-term operations and increases costs for long-term investments, while the text also covers funds, assets abroad, and virtual assets, in addition to adjustments to Interest on Own Capital (JCP) rules and a regularization for those declaring financial assets until the end of 2025.
What Changes with MP 1.303/2025
MP standardizes the IRRF at 17.5% for various financial applications, replacing the table that varied from 22.5% to 15% depending on the term.
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The Lula Government argues that unification reduces compliance costs and simplifies the investor’s calculation, aligning rules and reducing disputes over classifications.
The scope extends beyond fixed income for individuals.
The text covers investment funds, stock and OTC operations, investments abroad, and virtual assets.
It also adjusts the taxation of financial entities and modifies JCP, in a design that seeks to close loopholes and expand the effective tax base without raising the nominal rate above 17.5%.
Who Gains and Who Loses with the Single IR
In the short term, operations of up to six months are likely to pay less tax than under the old model (when rates could go up to 22.5%).
For traders and treasury operations, the predictability of 17.5% reduces friction and aids in cash flow planning, which the Lula Government cites as an efficiency advantage.
On the other hand, long-term investors, who previously benefited from a 15% rate, now face a higher cost. Private pensions outside exempt regimes, funds with long durations, and those holding securities until maturity lose their advantage.
The recurring criticism is that making long-term investments more expensive contradicts the goal of building domestic savings.
Why the Lula Government Chose Unification
After backtracking on IOF changes to strengthen cash flow, the Lula Government sought a recurring revenue avenue through a single IR, presenting a simple communication to society: a single rate, less regulatory labyrinth, and lower litigation.
The official thesis links simplicity to fairness, reducing distortions between durations.
There is also political and fiscal calculation. In an environment of result targets and pressure for predictability, a flat rate widens the base and reduces revenue volatility.
For the Planalto, 17.5% balances compensation for the short term without excessive “penalty” in the long term, even though this point faces the greatest resistance in the debate.
Processing in Congress in 2025: The Turning Point
Like all MPs, the text has immediate validity but depends on approval within 120 days.
In September 2025, the rapporteur Carlos Zarattini presented a report, and the mixed commission is analyzing amendments that may preserve the core of the single IR or reintroduce distinctions by type of asset and term.
The Lula Government is working to avoid fragmentation that would dilute revenue.
The dispute is technical and political. Sectoral benches advocate for exceptions for funds, the real estate market, agriculture, and virtual assets.
Fintechs are pushing for operational clarity, while banks are requesting a transition to recalibrate products and retention systems.
Any last-minute changes could produce unmapped distributive effects.
Banks, Fintechs, and Investors: Where it Hurts and Where it Helps
For banks, the single design facilitates compliance and withholding tax, but requires adjustments to JCP and a review of product pricing.
Fintechs fear ambiguity in digital assets and adaptation costs for platforms, advocating for clear rules for crypto and cross-border operations.
In retail, very short-term operations are likely to pay less and turn over more, while the long-term investor reevaluates duration and the mix of vehicles.
The message to the public is that “17.5% is the new floor-ceiling”: more predictable, but less advantageous for those who held extensive positions seeking the old rate of 15%.
Legal Risks, Transition, and Assets Abroad
Experts point out potential zones of legal uncertainty if secondary regulations do not detail the calculation base, withholding events, and treatment of credits in the portability between products.
The Lula Government needs to calibrate infralegal norms to avoid administrative controversies.
The MP includes a special regularization regime for undisclosed financial assets until the end of 2025, with a reduced rate for adherence.
On the international front, operations abroad and treaties may raise conflicts of jurisdiction, requiring coordination between the IRS and regulatory bodies to minimize de facto double taxation.
What to Watch for Until the Final Vote
The market is monitoring three triggers: 1) final scope of the single rate of 17.5%; 2) exceptions or restrictions for classes of assets (funds, REITs/Fiagros, crypto, JCP); 3) transition schedule and operational guidance for withholding, compensation, and reporting.
Any amendment that creates “regulatory islands” can recreate complexity and reduce the expected collection.
For the investor, the message is pragmatic: review terms, compare vehicles (funds versus direct title; domestic versus abroad), and simulate the new rate on the portfolio.
On the macro level, the Lula Government tries to shield fiscal targets with cash predictability, but the political price will be defined in the plenary.
The single IR of 17.5% is the core of the Lula Government’s strategy to simplify taxation and increase revenue in a decisive year.
Those who seek predictability win and act in the short term; those who rely on long-term benefits lose. The outcome in Congress will determine whether the promise of a simpler system will survive the lobby and the pressure for exceptions.
Do you agree with the Lula Government adopting a single IR of 17.5% or do you think it increases long-term costs and discourages savings? If you invest, what changes in your portfolio with this flat rate? Share your experience and strategy — we want to hear from those who deal with these decisions daily.
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