| Date | Bid | Offer |
|---|---|---|
| May 30 2025 | R$ 3.6714 | R$ 3.6730 |
| May 29 2025 | R$ 3.6426 | R$ 3.6441 |
| May 28 2025 | R$ 3.6521 | R$ 3.6542 |
| May 27 2025 | R$ 3.6379 | R$ 3.6394 |
| May 26 2025 | R$ 3.6759 | R$ 3.6780 |
| May 23 2025 | R$ 3.6860 | R$ 3.6869 |
| May 22 2025 | R$ 3.6170 | R$ 3.6191 |
| May 21 2025 | R$ 3.6569 | R$ 3.6590 |
| May 20 2025 | R$ 3.6250 | R$ 3.6265 |
| May 19 2025 | R$ 3.6531 | R$ 3.6552 |
| May 16 2025 | R$ 3.6383 | R$ 3.6404 |
| May 15 2025 | R$ 3.6052 | R$ 3.6067 |
| May 14 2025 | R$ 3.6153 | R$ 3.6168 |
| May 13 2025 | R$ 3.6398 | R$ 3.6413 |
| May 12 2025 | R$ 3.6175 | R$ 3.6184 |
| May 09 2025 | R$ 3.6293 | R$ 3.6303 |
| May 08 2025 | R$ 3.6466 | R$ 3.6476 |
| May 07 2025 | R$ 3.7054 | R$ 3.7076 |
| May 06 2025 | R$ 3.7108 | R$ 3.7118 |
| May 05 2025 | R$ 3.6559 | R$ 3.6580 |
| May 02 2025 | R$ 3.6342 | R$ 3.6352 |
Source: Brazilian Central Bank
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Ptax is the main reference rate for the US Dollar in Brazil. It's published daily by the Brazilian Central Bank based on the quotes received from the major foreign exchange dealers in the Brazilian market. It's released by 1 PM (GMT-3) every business day.