What's the difference between IPCA and IGP-M?

IPCA measures household consumer inflation and is the index Brazilian courts prefer for monetary correction. IGP-M is weighted toward wholesale prices, retail, and construction costs, so it swings more with exchange rates and commodities — it's the index most commonly written into rental contracts instead.

How does Brazil's legal rate work under Law 14.905/2024?

Since the law took effect, the legal rate (taxa legal) equals the SELIC rate minus the IPCA-15 variation for the same period, with a floor of zero. It replaced the previous practice of applying full SELIC on top of an inflation index, which double-counted inflation because SELIC already embeds it.

Can I use this calculator for a Brazilian court case?

It produces reference calculations built on official public data from Brazil's Central Bank, but it isn't a certified legal instrument. For filings that require an official figure, use the Central Bank's own Citizen's Calculator (Calculadora do Cidadão) or have the number confirmed by a Brazilian lawyer or accountant.

Why does the result differ from other calculators?

Small discrepancies usually come from how each tool treats the first and last partial month of the period, rounding, and which exact Central Bank series is used as the source. Two calculators using the same index can still land on slightly different totals for these reasons.

How often is Central Bank monetary correction data updated?

Most series are updated monthly. IPCA is released between the 8th and the 12th of the following month; SELIC and CDI figures are published with a shorter lag, typically within the first few days of the next month.

Monetary Correction Calculator

Calculate monetary correction using Brazil's main inflation indices — IPCA, IGP-M, INPC, SELIC, CDI, and Taxa Legal. Free, updated daily via BCB.

Updated April 2026

Calculation Data

INITIAL VALUE (R$)

START DATE

END DATE

Monthly calculation — partial days within the month are not included.

CORRECTION INDEX

Fill in the fields and click Calculate

How to Calculate Monetary Correction in Brazil

Live official data from Brazil's Central Bank (BCB)

1. Enter the amount and period

Original amount plus the start and end date for the correction.

2. Choose the index

IPCA, IGP-M, INPC, SELIC, CDI, or IPCA + Legal Rate for court calculations.

3. Calculate and export

Corrected value, accumulated factor, and month-by-month breakdown — export to PDF or share the link.

What this Brazil monetary correction calculator does

Six indices, sourced straight from the Central Bank

Live data from Brazil's Central Bank

Official figures pulled directly from the BCB's Time Series Management System — no manual index lookups.

Post-Law 14.905/2024 legal rate

SELIC net of the IPCA-15 variation, with a zero floor — implemented the way the 2024 law actually defines it.

Month-by-month breakdown

See the full path the value took, not just the final number.

PDF export

A ready-to-attach report for court filings or financial records.

The six indices and when to use each

Index

Typical use

IPCA

Official inflation — general use and judicial correction

IGP-M

Rental and electricity contracts

INPC

Labor lawsuits, minimum wage adjustments

IPCA + Legal Rate

Judicial monetary correction since 2024

When you'll need this

The most common scenarios among people using this calculator

Updating judicial debts

Civil and labor judgments in Brazil require correction from the date of the underlying fact until the date of payment.

Rent adjustments

Lease agreements with an annual adjustment clause tied to IPCA or IGP-M.

Labor claims

Severance pay and unpaid wages corrected by INPC or IPCA in Brazilian labor court.

Financial analysis

Compare the real purchasing power of historical cash flows using SELIC or CDI.

Common mistakes

Adding full SELIC on top of IPCA (double counting)

The post-2024 Legal Rate already nets out IPCA — add both separately and you count inflation twice.

Using IGP-M for judicial correction

Brazilian case law favors IPCA for court debts — IGP-M is far more common in rental contracts.

Treating the result as an official legal certificate

These figures are a reference based on public data — for official filings, confirm with a lawyer or accountant.

Why use this calculator

It implements the post-Law 14.905/2024 legal rate correctly — SELIC net of IPCA-15, with a zero floor — avoiding the common mistake of double-counting inflation that trips up manual calculations.

Data is pulled live from the Central Bank's SGS series, so the figures reflect what was officially published, not a static, outdated table someone copied into a spreadsheet.

IPCA vs. IGP-M

Brazil's two most-used indices, different purposes

IPCA

IGP-M

Measured by

IBGE

FGV

Composition

consumer basket (1–40 minimum wages)

60% wholesale + 30% retail + 10% construction

Most used for

judicial correction, official inflation

rental and electricity contracts

Volatility

more stable

swings more with exchange rate and commodities

Frequently asked questions

Monetary correction (correção monetária) is the adjustment of a nominal amount to offset inflation between two dates, so the real value isn't eroded over time. Brazilian courts apply it to judgments, and it's standard in rent, wage, and financial contracts — the corrected amount is the original figure multiplied by the accumulated variation of the chosen index.

References

BCB SGS — Time Series Management System

The Central Bank of Brazil's official portal listing every available series and its methodology notes.

Law 14.905/2024 — Planalto (official text, Portuguese)

The full text of the law that redefined Brazil's legal interest rate and default monetary correction rules.

New Brazilian law on interest and monetary correction — HFW

English-language legal analysis of Law 14.905/2024 and what it changed for parties in Brazilian disputes.