Dados B3 › Macro › US dollar PTAX
Macro · Central Bank of Brazil
Official US dollar rate (PTAX)
The dollar PTAX closed at R$ 5.4212 (ask) and R$ 5.4206 (bid) on 2026-10-30.
PTAX is the official US dollar exchange rate, computed by the Central Bank of Brazil from four daily polls of foreign-exchange dealers; the closing rate is their average. It is the reference used by contracts, financial statements and the tax authority. Ask is what the market charges to sell dollars; bid is what it pays.
2026-10-30
2026-10-30
base 2026-10-29: R$ 5.3744
base 2025-10-30: R$ 5.3850
History
The last 20 business days
| date | ask | bid |
|---|---|---|
| 2026-10-30 | 5.4212 | 5.4206 |
| 2026-10-29 | 5.3744 | 5.3738 |
| 2026-10-28 | 5.3420 | 5.3414 |
| 2026-10-27 | 5.3346 | 5.3340 |
| 2026-10-26 | 5.5007 | 5.4998 |
| 2026-10-23 | 5.0377 | 5.0371 |
| 2026-10-22 | 5.0383 | 5.0377 |
| 2026-10-21 | 5.0277 | 5.0270 |
| 2026-10-20 | 5.0140 | 5.0134 |
| 2026-10-19 | 5.0564 | 5.0558 |
| 2026-10-16 | 5.0826 | 5.0820 |
| 2026-10-15 | 5.0521 | 5.0515 |
| 2026-10-14 | 5.0441 | 5.0435 |
| 2026-10-13 | 5.0096 | 5.0090 |
| 2026-10-09 | 4.9892 | 4.9886 |
| 2026-10-08 | 5.0119 | 5.0113 |
| 2026-10-07 | 4.9935 | 4.9929 |
| 2026-10-06 | 4.9698 | 4.9692 |
| 2026-10-05 | 4.9859 | 4.9853 |
| 2026-10-02 | 5.2238 | 5.2232 |
The data in JSON and CSV
- /macro/series/dolar — JSON; without a key, a sample of the last 30 days; the full series comes with a free key.
- /macro/series/dolar?formato=csv — CSV.
- /macro/series — every macro series we keep, with the coverage, the source and the licence of each.
- How these series are collected
Source and licence
Central Bank of Brazil — SGS — Sistema Gerenciador de Séries Temporais (api.bcb.gov.br).
- US dollar PTAX closing rate, ask (SGS 1)
- US dollar PTAX closing rate, bid (SGS 10813)
Licence: ODbL 1.0 (Open Data Commons Open Database License), as declared by the BCB on its open data portal. Condition: free use, including commercial, citing the Central Bank as the source and sharing the derived database on the same terms.
The number is the one the source published, not recomputed. It is an aggregate that nobody rebuilds from a public filing, so it lives in the Macro section, apart from the company fundamentals.
How to cite
Source: https://dadosb3.com/macro/dolar?lang=en (Dados B3) — Official US dollar rate (PTAX), figure published by Central Bank of Brazil (SGS; ODbL 1.0), not recomputed; data version 2026-11-03-delistadas-proventos-cvm; latest figure 2026-10-30. Open methodology at https://dadosb3.com/metodologia/indicadores_macro?lang=en.
Other macro indicators
Coverage: 1999-01-04 → 2026-10-30 · 6989 points · Not investment advice.
Sources: CVM (open data, ODbL) and B3 (COTAHIST). Not affiliated with B3 or the CVM. Not investment advice.
Numbers on this page are live. Data version 2026-11-03-delistadas-proventos-cvm · page generated 2026-11-03 23:34 UTC. If this does not match /saude, you are reading a cached copy.