| Date | Bid | Offer |
|---|---|---|
| Oct 31 2017 | R$ 4.3385 | R$ 4.3403 |
| Oct 30 2017 | R$ 4.2873 | R$ 4.2900 |
| Oct 27 2017 | R$ 4.2991 | R$ 4.3012 |
| Oct 26 2017 | R$ 4.2721 | R$ 4.2742 |
| Oct 25 2017 | R$ 4.2898 | R$ 4.2919 |
| Oct 24 2017 | R$ 4.2570 | R$ 4.2584 |
| Oct 23 2017 | R$ 4.2188 | R$ 4.2199 |
| Oct 20 2017 | R$ 4.1973 | R$ 4.1994 |
| Oct 19 2017 | R$ 4.1883 | R$ 4.1905 |
| Oct 18 2017 | R$ 4.1702 | R$ 4.1717 |
| Oct 17 2017 | R$ 4.1813 | R$ 4.1840 |
| Oct 16 2017 | R$ 4.1969 | R$ 4.1984 |
| Oct 13 2017 | R$ 4.1990 | R$ 4.2007 |
| Oct 11 2017 | R$ 4.1778 | R$ 4.1798 |
| Oct 10 2017 | R$ 4.1861 | R$ 4.1873 |
| Oct 09 2017 | R$ 4.1700 | R$ 4.1720 |
| Oct 06 2017 | R$ 4.1321 | R$ 4.1342 |
| Oct 05 2017 | R$ 4.1144 | R$ 4.1165 |
| Oct 04 2017 | R$ 4.1535 | R$ 4.1552 |
| Oct 03 2017 | R$ 4.1723 | R$ 4.1743 |
| Oct 02 2017 | R$ 4.1965 | R$ 4.1989 |
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 05 1984 until Jan 28 2026