What's Changing with Simples Nacional in 2027?
Brazil’s Reforma Tributária do Consumo is reshaping how Simples Nacional handles two new federal/state/municipal levies: the Contribuição sobre Bens e Serviços (CBS) and Imposto sobre Bens e Serviços (IBS) (gov.br). These replace PIS/PASEP, Cofins, ICMS, and ISS gradually. For small businesses (ME/EPP) in Simples, that means adjusting your tax choices well ahead of 2027. (gov.br)
Key Deadlines and Decisions in September 2026
| Action | Deadline | Effect Date |
|---|---|---|
| Opt into Simples Nacional for non-opted companies | 1–30 September 2026 | 1 January 2027 (gov.br) |
| Decide how to collect CBS & IBS (within Simples or outside) | Same period (for first half 2027) | Jan–June 2027 (gov.br) |
| Cancel option, if needed | Till 30 November 2026 | Adjustment for Jan–June 2027 (gov.br) |
Pure vs. Hybrid: What Are the Strategic Trade-Offs?
- Pure Simples Nacional: All applicable taxes, including CBS & IBS, are reported and paid under the unified Simples guide. Simpler administration but limited credit opportunities for CBS/IBS among your clients. (Default option if you don’t choose anything by end of September.) (gov.br).
- Hybrid model: You collect CBS and IBS outside Simples, under regular rules, but keep Simples for ICMS, ISS, etc. This could help for clients needing credit or cross-business transactions where external CBS/IBS is advantageous. More complexity, more paperwork. (gov.br).
Practical Tips
- Review last year's fiscal performance: Estimate whether CBS/IBS collected inside Simples will lift your tax load or whether outside treatment gives better client-side crediting.
- Check your billing mix: If most invoices are to final consumers, pure option may suffice. If you deal with other businesses or supply chains, hybrid may offer better credit leverage.
- Ensure documentation systems are up to date: From 1 November 2026, NFS-e Nacional (national service invoice) must be emitted via the Emissor Nacional by ME/EPP. Plan for software upgrades. (gov.br)
- Monitor government manuals and note técnicos for technical layout updates. Do not delay integrating changes like document generation or data fields for CBS/IBS highlights. (gov.br)
- Work with your accountant early: Especially if considering hybrid or worrying about compliance risks.
Example Scenario
A small catering business whose clients are largely individuals and restaurants:
- If staying pure Simples, it’s simpler and likely minimal impact from CBS/IBS because few clients can claim credits.
- If switching to hybrid, they could reclaim more input credits when supplying other businesses—adds bookkeeping costs but may lower net tax burden in supply-heavy months.
Bottom Line
September 2026 is a critical planning window. The choices you make then affect your 2027 tax regime—how you collect CBS/IBS, how you emit invoices, and whether you carry advantages or drawbacks around tax credits. Proactive decisions and solid technical setup will pay off when the Reform kicks in full force.