Mexico Decides Rates Thursday With the Peso Firm and Diesel Capped

MEXICO · MONEY & POLICY

Updated 2 times · Latest: Friday 25 September 2026

Banco de México has sat on its hands since May, and most forecasters expect it to sit a while longer when it announces on Thursday at 1 p.m. For expats, the meeting matters less for the headline rate than for what it says about the peso you exchange into, the credit you carry in Mexico, and a diesel subsidy whose daily bill keeps growing.

The Decision and What Markets Expect

Banxico’s governing board announces on Thursday 24 September at 1 p.m. Mexico City time, hours after the mid-month inflation print publishes at 7 a.m. The benchmark rate has been at 6.50 percent since May, when the board paused an easing cycle to watch how the Fed’s moves and domestic demand played through prices. Barclays expects a hold — that is one bank’s published forecast, and this piece labels it as such; Banxico gives no advance guidance, and the mid-month CPI number Thursday morning is the last input the board sees.

For expats, the practical transmission runs through peso credit: Mexican mortgage rates, card APRs and business credit lines reprice off the benchmark with a lag. A hold keeps that picture static; any surprise cut would show up in consumer credit within weeks, and in the exchange rate within minutes.

The Peso You Actually Get

Mexico’s official yardstick is Banxico’s FIX rate, determined each business day and published in the Diario Oficial the next. The FIX determined on Tuesday is 17.3015 per US dollar, the figure appearing in today’s DOF, while obligations settling today use 17.2203, the so-called para pagos rate, which is simply the FIX published in the previous DOF. At the FIX rate, MXN 10,000 is about US$578; market estimates put spot trading around 17.28 on Wednesday morning, a market estimate rather than an official fixing.

The peso has been one of the region’s firmer currencies this quarter, which cuts both ways for foreigners: your dollars buy fewer pesos than they did in spring, but peso-denominated savings and rents converted back to dollars have held value. A surprise on Thursday, in either direction, is the kind of event that moves that math by a percent or two in a day.

The Diesel Cap’s Growing Bill

Separate from the rate decision but central to this month’s cost of living: the government’s voluntary agreement with fuel retailers caps regular diesel at MXN 27 per liter — about US$1.56 at the FIX rate. The cap cushions trucking and food logistics, and it is not free: with international diesel above the cap, one analyst estimate puts the fiscal cost near MXN 163 million per day, about US$9.4 million, absorbed through the IEPS fuel-tax mechanism. That figure is a single analyst’s estimate, cited here as such, not an official number.

For expats the cap shows up indirectly, in stable bus fares and supermarket logistics, rather than at a pump most foreigners never visit. The question for the months ahead is fiscal: every day the cap holds at this spread, the subsidy bill grows, and the eventual adjustment lands either in the budget or at the pump.

The Growth Backdrop

The OECD this week put Mexico’s second-quarter growth at 1.4 percent quarter on quarter, second in the G20 behind only India — a stronger print than the annual figures suggested. President Sheinbaum says the third and fourth quarters will improve on the first half. The board weighs that against inflation that has stayed above the 3 percent target midpoint, which is precisely why the consensus sits on a hold rather than a cut.

What Happens After the Decision

The statement lands at 1 p.m. Thursday; the peso’s first reaction comes within minutes on the interbank market, and Friday’s opening FIX will reflect it. The next dated items after that: formal US–Mexico trade talks resume in Washington on Monday 28 September, with tariff reductions on the table after the Sheinbaum–Trump call. For the full regional money picture, Argentina’s country risk, Brazil’s pre-election real, Colombia’s TRM, see our daily guide for Wednesday 23 September.

Earlier updates

Decision day: Banxico announces at 1 p.m. Mexico City time, with the mid-month inflation print out at 7 a.m. The peso goes in weakened — spot closed Wednesday at 17.531 after a 1.37 percent slide, the sharpest one-day move in months per El Financiero, and the FIX determined Wednesday is 17.5030, published in today’s Diario Oficial; the rate for settling obligations today is 17.3015. Barclays expects a hold at 6.50 percent — a bank forecast, not guidance. The piece below remains as published.

Banxico held at 6.50 percent, a unanimous vote, and said plainly it will not automatically follow the Federal Reserve’s hike to 3.75–4.00 percent — arguing Mexico’s own inflation path needs a different response. The peso absorbed the divergence, closing at 17.7246 per dollar, down 1.10 percent, its weakest settle in months; early-Friday Yahoo spot was near 17.71. The briefing below, written before the decision, remains for context.

More: Mexico news in English, every day from The Rio Times. See also our daily guide for Wednesday 23 September.

This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief