| Date | Bid | Offer |
|---|---|---|
| May 31 2023 | R$ 5.4275 | R$ 5.4287 |
| May 30 2023 | R$ 5.4229 | R$ 5.4256 |
| May 29 2023 | R$ 5.3499 | R$ 5.3526 |
| May 26 2023 | R$ 5.3671 | R$ 5.3697 |
| May 25 2023 | R$ 5.3593 | R$ 5.3604 |
| May 24 2023 | R$ 5.3208 | R$ 5.3234 |
| May 23 2023 | R$ 5.3487 | R$ 5.3514 |
| May 22 2023 | R$ 5.3663 | R$ 5.3689 |
| May 19 2023 | R$ 5.3925 | R$ 5.3951 |
| May 18 2023 | R$ 5.3483 | R$ 5.3510 |
| May 17 2023 | R$ 5.3601 | R$ 5.3628 |
| May 16 2023 | R$ 5.3360 | R$ 5.3376 |
| May 15 2023 | R$ 5.3373 | R$ 5.3400 |
| May 12 2023 | R$ 5.3427 | R$ 5.3453 |
| May 11 2023 | R$ 5.4232 | R$ 5.4258 |
| May 10 2023 | R$ 5.4312 | R$ 5.4338 |
| May 09 2023 | R$ 5.4756 | R$ 5.4783 |
| May 08 2023 | R$ 5.4748 | R$ 5.4775 |
| May 05 2023 | R$ 5.4773 | R$ 5.4800 |
| May 04 2023 | R$ 5.5150 | R$ 5.5162 |
| May 03 2023 | R$ 5.5474 | R$ 5.5501 |
| May 02 2023 | R$ 5.5337 | R$ 5.5362 |
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.