What the peso rate actually is

Mexico’s reference rate is the FIX, a benchmark calculated by Banco de México from wholesale-market quotes for T+2 currency trades. It’s an official reference, not a retail rate, and it’s published in the Diario Oficial on the next banking day.

Why your bank or kiosk shows something different

Banks, apps, and cambios start from a market rate, then add their spread and fees. That’s why card charges and airport kiosks rarely match the FIX. For readers, the takeaway is simple: mid-market ≠ what you actually pay; compare total cost at checkout.

Where to check an official reference

For a clean, official anchor, use Banxico’s exchange-rate pages and charts. They won’t tell you your card’s exact rate, but they’re the standard for contracts and government reporting.

What moves the peso day to day

Policy expectations from Banxico and the Fed, risk appetite, trade flows, and energy prices tend to matter most. Readers should watch central-bank guidance and major US data releases to understand big swings.