| Date | Bid | Offer |
|---|---|---|
| Sep 29 2017 | R$ 3.7410 | R$ 3.7430 |
| Sep 28 2017 | R$ 3.7515 | R$ 3.7528 |
| Sep 27 2017 | R$ 3.7497 | R$ 3.7517 |
| Sep 26 2017 | R$ 3.7273 | R$ 3.7287 |
| Sep 25 2017 | R$ 3.7210 | R$ 3.7230 |
| Sep 22 2017 | R$ 3.7435 | R$ 3.7445 |
| Sep 21 2017 | R$ 3.7434 | R$ 3.7453 |
| Sep 20 2017 | R$ 3.7521 | R$ 3.7531 |
| Sep 19 2017 | R$ 3.7518 | R$ 3.7528 |
| Sep 18 2017 | R$ 3.7289 | R$ 3.7299 |
| Sep 15 2017 | R$ 3.7361 | R$ 3.7381 |
| Sep 14 2017 | R$ 3.7254 | R$ 3.7274 |
| Sep 13 2017 | R$ 3.7282 | R$ 3.7295 |
| Sep 12 2017 | R$ 3.7263 | R$ 3.7276 |
| Sep 11 2017 | R$ 3.6898 | R$ 3.6918 |
| Sep 08 2017 | R$ 3.7206 | R$ 3.7216 |
| Sep 06 2017 | R$ 3.7172 | R$ 3.7182 |
| Sep 05 2017 | R$ 3.7153 | R$ 3.7172 |
| Sep 04 2017 | R$ 3.7393 | R$ 3.7409 |
| Sep 01 2017 | R$ 3.7201 | R$ 3.7220 |
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.
Data available from Dec 31 1998 until Jan 28 2026