Calculating the Initial Monthly Benefit (RMI) After the 2019 Reform

This page is a translation of the original Portuguese text, provided for convenience. It deals with Brazilian law. If there is any discrepancy, the Portuguese version prevails. Read the original in Portuguese

The calculation of the initial monthly benefit (RMI) determines how much an insured person will receive from the INSS (Brazil’s National Social Security Institute). After the 2019 Social Security Reform, the rules changed, with a direct impact on retirees’ wallets.

What the initial monthly benefit is and why it matters

The initial monthly benefit (RMI) is the first amount paid under a social security benefit granted by the INSS. It is obtained by applying a coefficient to the benefit base, which is the calculation base set by averaging the insured person’s contribution salaries over their working life.

Before Constitutional Amendment EC 103/2019, the benefit base was the simple arithmetic average of the highest 80% of contribution salaries since July 1994, with the lowest 20% discarded. This rule favored the insured person, because it left the lower-paid periods out of the calculation.

Under the Reform, the rule now uses the average of all contribution salaries since July 1994, with nothing discarded. This change, set out in Article 26 of EC 103/2019, tends to lower the benefit base for people who contributed on smaller amounts at some point, such as early in their careers or during periods of underemployment.

The calculation coefficient after the Reform

Besides changing the calculation base, the Reform changed the applicable coefficient. For most disability benefits and for age-based retirement, the benefit is 60% of the salary average, plus 2% for each year of contribution beyond 20 years (men) or 15 years (women).

In practice, a woman with 15 years of contribution receives only 60% of the average, and she would need 35 years of contribution to reach 100%. For men, reaching 100% takes 40 years. Few insured people reach these thresholds, so in most cases the benefit ends up being proportional.

There are exceptions to the 60% coefficient. Permanent disability retirement resulting from a work accident or occupational disease guarantees 100% of the salary average, with no reduction applied. Likewise, the survivor’s pension has its own calculation rule and does not follow this formula.

The initial monthly benefit (RMI) is the first amount paid under a social security benefit granted by the INSS.

The difference between the old and the new calculation

To illustrate the difference, consider a male insured person with 30 years of contribution and a salary average (counting 100% of contributions) of R$ 4.000,00. Under the old rule, with the lowest 20% discarded, his average might be R$ 4.500,00, to which the social security factor would then be applied.

Under the new rule, the coefficient would be 60% + 20% (2% x 10 years beyond 20 years) = 80%. Applied to R$ 4.000,00, the RMI would be R$ 3.200,00. Even with the social security factor applied, the previous rule often produced higher amounts for older insured people.

This comparison shows why vested rights matter so much: if you met the requirements before November 13, 2019, you can choose the more favorable calculation, even if you apply for the benefit years later. When there is a vested right, the INSS must automatically apply the more favorable rule.

Strategies to improve your RMI

There are steps you can take to improve your initial monthly benefit. The first is to check the CNIS (National Registry of Social Information) and correct any inconsistencies, since salaries recorded lower than they really were bring the average down. Periods with no record or with zero amounts also hurt the calculation.

Another strategy is to postpone retirement to build up more contribution time, raising the coefficient by 2% for each additional year. This option must be weighed case by case, taking into account your age and the expected financial return.

Adding special, rural or military service periods that may be missing from the INSS records can also improve the calculation. Many insured people have unrecorded contribution periods that, once included, change both their total contribution time and their salary average.

Reviewing the RMI and having the INSS recalculate it

If you disagree with the amount of your initial monthly benefit, you can request a review of the benefit from the INSS or go directly to the Federal Courts. The deadline to request a review is a forfeiture period of 10 years, counted from the first day of the month after you receive the first payment, under Article 103 of Law 8.213/1991. Once that period has passed, the benefit becomes final and its initial amount can no longer be changed, except in cases of proven clerical or administrative error.

Among the review theories debated after the Reform was the so-called “lifetime review” (revisão da vida toda), which argued for including contributions made before July 1994 in the calculation whenever that would be more favorable. The STF (Brazil’s Supreme Federal Court) recognized this possibility in an earlier ruling, but in Direct Actions of Unconstitutionality (ADIs) 2.110 and 2.111 it held that the transition rule must be applied; in 2025, it reaffirmed that position when it concluded the motions for clarification in Theme 1.102. The lifetime review is therefore not a general, standalone theory for new claims.

It is worth stressing that social security planning before you apply for the benefit is the most effective way to secure the best possible RMI. A detailed analysis of the CNIS, the correction of any employment records and earnings recorded incorrectly, and simulations under the different calculation rules available let you identify the most advantageous time and type of retirement. This preventive work avoids the need for later reviews and ensures the benefit is granted in the correct amount from the start.

Frequently Asked Questions

Who is entitled to the old retirement calculation?

You are entitled to the old calculation (the average of the highest 80% of salaries) if you met all the requirements for retirement before November 13, 2019, the date EC 103/2019 took effect. Even if you apply after that date, your vested right guarantees that the previous rule will be applied.

How does discarding the lowest salaries affect the benefit amount?

Discarding the lowest 20% of salaries, as the pre-Reform rule allowed, raised the benefit base average by removing the lower-paid periods. Without that discard, the average tends to fall, especially for people whose pay varied over their careers. This has a direct impact on the final RMI.

What is the minimum initial monthly benefit from the INSS?

The Federal Constitution guarantees that no social security benefit that replaces the contribution salary may be lower than the minimum wage. So even if the RMI calculation produces a smaller amount, you will receive at least the minimum wage in effect on the benefit start date.

As informações deste artigo são de caráter informativo e não substituem consulta jurídica individualizada. Cada caso possui particularidades que exigem análise específica.