Brazil Posts Deeper IPCA-15 Deflation as Itaipú Bonus Cuts Power Bills

Brazil · ECONOMY

The IBGE’s mid-month price gauge fell 0.40% in August, more than the 0.31% decline economists expected, as a US$170 million Itaipú credit cut electricity bills and pulled interest-rate futures lower.

Brazil’s mid-month inflation reading came in with deeper deflation than markets expected on Wednesday, 26 August 2026, sending interest-rate futures lower in São Paulo trading. The IPCA-15, the preview of the country’s official consumer price index, fell 0.40% in August, the statistics agency IBGE said, against a median forecast of a 0.31% decline compiled by Valor Data. The IPCA-15 deflation was the first negative monthly reading of 2026.

IPCA-15 deflation comes in below the consensus

The 0.40% decline in the IPCA-15 deflation was steeper than the 0.31% drop most economists expected, according to the median of forecasts collected by Valor Data. In the 12 months through mid-August, the index rose 4.24%, the IBGE said. The mid-month gauge, which collects prices from mid-July to mid-August, previews the official IPCA due in September.

The reading follows a 0.06% increase in July and marks the first monthly deflation of the year, according to Estado de S. Paulo. The IPCA-15 deflation was concentrated in administered and volatile items, particularly electricity, food at home and airfares, while some services continued to rise.

The IPCA-15 tracks prices for families earning between one and 40 minimum wages across 11 urban areas of Brazil and uses the same methodology as the official IPCA, differing only in the collection window, which is brought forward by about two weeks. Because it lands before the full-month figure, it is the freshest inflation signal available to the central bank and typically moves rate markets on the day of release.

Itaipú bonus drives biggest power-bill drop since January 2025

Residential electricity prices fell 6.25% in the period, the largest decline since January 2025, when they dropped 15.46% for the same reason, Valor reported. The item knocked 0.26 percentage point off the monthly index, making it the single largest downward contribution.

The driver was the Itaipú bonus, a credit that returns to consumers part of the surplus from the energy commercialization account of the binational Itaipú hydroelectric dam. Power regulator Aneel approved the distribution of R$872 million, roughly US$170 million at current exchange rates, applied to bills issued between 1 and 31 August. The credit goes to residential consumers who had at least one month last year with consumption below 350 kWh.

The bonus more than offset upward pressure elsewhere in the electricity item. The yellow tariff flag remains in force in August, adding R$1.885 per 100 kWh consumed, and the period captured tariff increases of 19.55% in Curitiba, 14.89% for one utility in Porto Alegre and 8.85% for one utility in São Paulo, according to Valor. The IBGE has signaled the effect is temporary: without the one-off credit, the electricity item is expected to rebound in September even in the absence of new adjustments.

Rate futures slide after the IPCA-15 deflation

Interest-rate futures opened lower after the data. Around 9:10 a.m. local time, the DI contract for January 2027 slipped to 13.66% from 13.675%, the January 2028 contract fell to 13.765% from 13.815%, January 2029 eased to 14.045% from 14.095%, and January 2031 dropped to 14.295% from 14.35%, according to Valor. An additional 2% drop in oil prices on Wednesday morning also supported domestic fixed income.

The IPCA-15 deflation landed as markets assess the pace of monetary easing. The central bank reduced the Selic to 14.00% at its August meeting, and a softer inflation path would strengthen the case for further cuts, although the 12-month rate of 4.24% remains above the 3% target center, which carries a tolerance band of 1.5 percentage points in either direction. Traders were also awaiting July PCE inflation data in the United States, the Federal Reserve’s preferred gauge.

Falling food and transport costs broaden the disinflation

Beyond electricity, the August reading showed broad-based relief. The housing group fell 1.41%, the steepest decline among the index’s groups, pulled down by power bills. Transportation dropped 1.0%, reversing a 0.11% increase in July, as airfares plunged 13.3% and fuels fell 1.43%. Within fuels, ethanol fell 3.63%, gasoline 1.23% and diesel 0.71%, while vehicular natural gas rose 1.42%, the IBGE said.

Food and beverages declined 0.57%, a second consecutive month of deflation for the group, according to Valor, with food consumed at home down a sharper 0.97%, led by tomatoes, which fell 27.38%, and potatoes, down 25.14%. On the upside, personal expenses rose 0.66%, driven by cigarettes, and education increased 0.46%.

Economists caution that the composition of the August number matters as much as the headline. The electricity credit will drop out of the comparison base in September, and services inflation, which tends to track wages and a still-tight labor market, remains the component the central bank watches most closely. The full-month IPCA for August, due in September, will show whether the disinflation extends beyond the one-off utility credit.

Valor reports government doubled financial spending to sidestep fiscal framework

The benign inflation print contrasted with a separate report in Valor on Wednesday detailing how President Luiz Inácio Lula da Silva’s government has worked around the fiscal framework it enacted in 2023. According to the newspaper, the government raised financial expenditure, which sits outside the framework’s limits on primary spending, from 0.9% of GDP in 2023 to 2.1% of GDP in 2026, mostly through credit stimulus measures.

The framework, known as the arcabouço, caps real growth in primary spending at between 0.6% and 2.5% a year, tied to revenue performance, and sets primary result targets. Because financial spending is excluded from those constraints, expanding it allows the administration to stimulate the economy without breaching the rule on paper.

Lívio Ribeiro, a researcher at FGV Ibre and a partner at consultancy BRCG, told Valor the measures create a hidden side to fiscal stimulus that makes it harder and more opaque to track the government’s impact on the economy, and that they complicate the central bank’s efforts to contain inflation. The juxtaposition of a one-off IPCA-15 deflation and an expanding fiscal footprint helps explain why markets expect the easing cycle to remain cautious.

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Sources

• valor.globo.com
• valor.globo.com
• www.estadao.com.br
• valor.globo.com
• www.infomoney.com.br

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