| Date | Bid | Offer |
|---|---|---|
| Apr 30 2021 | R$ 4.1684 | R$ 4.1694 |
| Apr 29 2021 | R$ 4.1621 | R$ 4.1636 |
| Apr 28 2021 | R$ 4.1936 | R$ 4.1951 |
| Apr 27 2021 | R$ 4.2305 | R$ 4.2320 |
| Apr 26 2021 | R$ 4.2546 | R$ 4.2578 |
| Apr 23 2021 | R$ 4.2384 | R$ 4.2405 |
| Apr 22 2021 | R$ 4.2454 | R$ 4.2464 |
| Apr 20 2021 | R$ 4.2760 | R$ 4.2792 |
| Apr 19 2021 | R$ 4.3241 | R$ 4.3256 |
| Apr 16 2021 | R$ 4.3554 | R$ 4.3564 |
| Apr 15 2021 | R$ 4.3549 | R$ 4.3564 |
| Apr 14 2021 | R$ 4.4007 | R$ 4.4017 |
| Apr 13 2021 | R$ 4.3524 | R$ 4.3534 |
| Apr 12 2021 | R$ 4.3100 | R$ 4.3115 |
| Apr 09 2021 | R$ 4.3063 | R$ 4.3079 |
| Apr 08 2021 | R$ 4.2634 | R$ 4.2650 |
| Apr 07 2021 | R$ 4.2592 | R$ 4.2607 |
| Apr 06 2021 | R$ 4.3087 | R$ 4.3097 |
| Apr 05 2021 | R$ 4.3312 | R$ 4.3323 |
| Apr 01 2021 | R$ 4.3218 | R$ 4.3228 |
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.