As of : The U.S. Treasury’s reporting rate of exchange for Mexico-Peso is 18.134 units per US$1, as published for the quarter ending Sep 30, 2026. It is a quarterly rate for federal agencies, not a live market rate. That is 3.90% versus the previous quarter.
These are the Treasury's quarterly reporting rates for federal agencies, not live market rates. Do not use them to convert money for a payment or trade: use the rate your bank or provider quotes.
Published: · Data updated:
Last checked against the source: . Changes and averages are calculated by this site from the published quarterly rates.
| Measure | Value |
|---|---|
| Currency | Mexico-Peso |
| Latest reporting rate (units per US$1) | 18.134 |
| Latest record date | Sep 30, 2026 |
| Previous quarter rate | 17.454 |
| Change vs previous quarter (calculated) | 3.90% |
| Rate one year earlier (4 quarters back) | 18.344 |
| Change vs one year earlier (calculated) | -1.14% |
| Highest rate in this series (units per US$1) | 23.791 |
| Date of the highest rate | Mar 31, 2020 |
| Lowest rate in this series (units per US$1) | 9.120 |
| Date of the lowest rate | Mar 31, 2002 |
| Average of all quarterly rates (calculated) | 14.558 |
| US dollars per 1 unit of this currency (calculated, 1 / rate) | 0.0551 |
| First record in the series | Mar 31, 2001 |
| Quarterly records in the series | 88 |
| Quarter-end record date | Units per US$1 |
|---|---|
| Sep 30, 2026 | 18.134 |
| Jun 30, 2026 | 17.454 |
| Mar 31, 2026 | 18.028 |
| Dec 31, 2025 | 17.956 |
| Sep 30, 2025 | 18.344 |
| Jun 30, 2025 | 18.830 |
| Mar 31, 2025 | 20.386 |
| Dec 31, 2024 | 20.704 |
How the figures are counted: change = (latest rate ÷ earlier rate − 1) × 100; US dollars per unit = 1 ÷ rate; the average is the simple mean of all quarterly rates in the series.
Worked example: Mexico-Peso: 18.134 now vs 17.454 last quarter = 3.90%; 1 ÷ 18.134 = 0.0551 US dollars per unit.
The latest Treasury reporting rate is 18.134 units per US$1, for the quarter ending Sep 30, 2026.
It moved 3.90% versus the previous quarter (17.454) and -1.14% versus four quarters earlier (18.344).
In this series the highest rate was 23.791 on Mar 31, 2020 and the lowest was 9.120 on Mar 31, 2002.
No. The Treasury publishes reporting rates every quarter for federal agencies. For a payment, transfer or trade, use the rate quoted by your bank or provider.
From the Treasury Reporting Rates of Exchange dataset on the U.S. Treasury's Fiscal Data site, read through its public API.