| Date | Bid | Offer |
|---|---|---|
| Nov 30 2018 | R$ 3.8627 | R$ 3.8633 |
| Nov 29 2018 | R$ 3.8562 | R$ 3.8568 |
| Nov 28 2018 | R$ 3.8625 | R$ 3.8631 |
| Nov 27 2018 | R$ 3.8919 | R$ 3.8925 |
| Nov 26 2018 | R$ 3.8649 | R$ 3.8655 |
| Nov 23 2018 | R$ 3.8075 | R$ 3.8081 |
| Nov 22 2018 | R$ 3.8097 | R$ 3.8103 |
| Nov 21 2018 | R$ 3.7866 | R$ 3.7872 |
| Nov 20 2018 | R$ 3.7574 | R$ 3.7591 |
| Nov 19 2018 | R$ 3.7547 | R$ 3.7553 |
| Nov 16 2018 | R$ 3.7519 | R$ 3.7525 |
| Nov 14 2018 | R$ 3.7918 | R$ 3.7924 |
| Nov 13 2018 | R$ 3.7786 | R$ 3.7792 |
| Nov 12 2018 | R$ 3.7472 | R$ 3.7478 |
| Nov 09 2018 | R$ 3.7500 | R$ 3.7506 |
| Nov 08 2018 | R$ 3.7385 | R$ 3.7391 |
| Nov 07 2018 | R$ 3.7586 | R$ 3.7592 |
| Nov 06 2018 | R$ 3.7486 | R$ 3.7492 |
| Nov 05 2018 | R$ 3.7042 | R$ 3.7048 |
| Nov 01 2018 | R$ 3.6968 | R$ 3.6973 |
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.
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Data available from Dec 03 1984 until Feb 27 2026