Tax Planning
How to Navigate the Simples Nacional Reforms in 2027
With major changes ahead due to the Reform of Consumption, small businesses must act now to choose the best tax regime for 2027—whether staying ‘pure’ in Simples Nacional or going ‘hybrid.’
By NomadicTax Research Team • 5-8 min read • September 14, 2026
## 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](https://www.gov.br/receitafederal/pt-br/acesso-a-informacao/acoes-e-programas/programas-e-atividades/reforma-tributaria-do-consumo/legislacao/legislacao-da-reforma-tributaria-do-consumo?utm_source=openai)). 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](https://www.gov.br/receitafederal/pt-br/acesso-a-informacao/acoes-e-programas/programas-e-atividades/reforma-tributaria-do-consumo/entenda?utm_source=openai))
## 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](https://www.gov.br/receitafederal/pt-br/assuntos/noticias/2026/setembro/receita-federal-alerta-comeca-hoje-o-prazo-para-opcao-pelo-simples-nacional-e-para-a-escolha-do-modelo-de-recolhimento-do-ibs-e-da-cbs-em-2027/?utm_source=openai)) |
| Decide how to collect CBS & IBS (within Simples or outside) | Same period (for first half 2027) | Jan–June 2027 ([gov.br](https://www.gov.br/receitafederal/pt-br/assuntos/noticias/2026/agosto/cgsn-atualiza-regras-do-simples-nacional-para-adequacao-a-reforma-tributaria-do-consumo/?utm_source=openai)) |
| Cancel option, if needed | Till 30 November 2026 | Adjustment for Jan–June 2027 ([gov.br](https://www.gov.br/receitafederal/pt-br/assuntos/noticias/2026/agosto/cgsn-atualiza-regras-do-simples-nacional-para-adequacao-a-reforma-tributaria-do-consumo/?utm_source=openai)) |
## 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](https://www.gov.br/receitafederal/pt-br/assuntos/noticias/2026/agosto/cgsn-atualiza-regras-do-simples-nacional-para-adequacao-a-reforma-tributaria-do-consumo/?utm_source=openai)).
- **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](https://www.gov.br/receitafederal/pt-br/assuntos/noticias/2026/agosto/cgsn-atualiza-regras-do-simples-nacional-para-adequacao-a-reforma-tributaria-do-consumo/?utm_source=openai)).
## Practical Tips
1. **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.
2. **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.
3. **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](https://www.gov.br/receitafederal/pt-br/assuntos/noticias/2026/agosto/simples-nacional-nfs-e-nacional-sera-obrigatoria-para-me-e-epp-a-partir-de-1o-de-novembro-de-2026?utm_source=openai))
4. **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](https://www.gov.br/receitafederal/pt-br/acesso-a-informacao/acoes-e-programas/programas-e-atividades/reforma-tributaria-do-consumo/orientacoes-2026?utm_source=openai))
5. **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.