| Date | Bid | Offer |
|---|---|---|
| Jul 30 2021 | R$ 3.7639 | R$ 3.7654 |
| Jul 29 2021 | R$ 3.7495 | R$ 3.7510 |
| Jul 28 2021 | R$ 3.7847 | R$ 3.7872 |
| Jul 27 2021 | R$ 3.8060 | R$ 3.8075 |
| Jul 26 2021 | R$ 3.8296 | R$ 3.8311 |
| Jul 23 2021 | R$ 3.8058 | R$ 3.8073 |
| Jul 22 2021 | R$ 3.8267 | R$ 3.8277 |
| Jul 21 2021 | R$ 3.8626 | R$ 3.8636 |
| Jul 20 2021 | R$ 3.8421 | R$ 3.8436 |
| Jul 19 2021 | R$ 3.8158 | R$ 3.8173 |
| Jul 16 2021 | R$ 3.7738 | R$ 3.7747 |
| Jul 15 2021 | R$ 3.7909 | R$ 3.7924 |
| Jul 14 2021 | R$ 3.7983 | R$ 3.8007 |
| Jul 13 2021 | R$ 3.8673 | R$ 3.8688 |
| Jul 12 2021 | R$ 3.9117 | R$ 3.9132 |
| Jul 09 2021 | R$ 3.9162 | R$ 3.9190 |
| Jul 08 2021 | R$ 3.9104 | R$ 3.9114 |
| Jul 07 2021 | R$ 3.9158 | R$ 3.9168 |
| Jul 06 2021 | R$ 3.8714 | R$ 3.8729 |
| Jul 05 2021 | R$ 3.8220 | R$ 3.8229 |
| Jul 02 2021 | R$ 3.7700 | R$ 3.7715 |
| Jul 01 2021 | R$ 3.7392 | R$ 3.7401 |
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.