| Date | Bid | Offer |
|---|---|---|
| Dec 29 2017 | R$ 4.4693 | R$ 4.4714 |
| Dec 28 2017 | R$ 4.4475 | R$ 4.4493 |
| Dec 27 2017 | R$ 4.4292 | R$ 4.4314 |
| Dec 26 2017 | R$ 4.4334 | R$ 4.4355 |
| Dec 22 2017 | R$ 4.4386 | R$ 4.4407 |
| Dec 21 2017 | R$ 4.4107 | R$ 4.4118 |
| Dec 20 2017 | R$ 4.4106 | R$ 4.4124 |
| Dec 19 2017 | R$ 4.3920 | R$ 4.3942 |
| Dec 18 2017 | R$ 4.4079 | R$ 4.4100 |
| Dec 15 2017 | R$ 4.4217 | R$ 4.4228 |
| Dec 14 2017 | R$ 4.4677 | R$ 4.4698 |
| Dec 13 2017 | R$ 4.4161 | R$ 4.4176 |
| Dec 12 2017 | R$ 4.4200 | R$ 4.4217 |
| Dec 11 2017 | R$ 4.3860 | R$ 4.3881 |
| Dec 08 2017 | R$ 4.4011 | R$ 4.4032 |
| Dec 07 2017 | R$ 4.4126 | R$ 4.4141 |
| Dec 06 2017 | R$ 4.3240 | R$ 4.3261 |
| Dec 05 2017 | R$ 4.3423 | R$ 4.3444 |
| Dec 04 2017 | R$ 4.3908 | R$ 4.3929 |
| Dec 01 2017 | R$ 4.3930 | R$ 4.3951 |
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