Platform

Overview Capabilities and architecture Data domains ADAM · AI applied to master data Reference sources How we implement Security and ISO 27001

Solutions

Supplier qualification Customer onboarding Material standardization (PDM) Service standardization (PDS) PIM · product information Material data cleansing Customer and vendor data cleansing Tax Reform

Industries

Agribusiness Industry and manufacturing Consumer goods (CPG) Retail Healthcare and pharmaceuticals Energy and infrastructure Financial services Technology, services, and logistics

Services

Consulting and diagnostics Master data cleansing Data migration and SAP S/4HANA Data as a Service MDM Engineering

Partnerships

Overview Finder Whitelabel Co-projects SAP migration projects Niche and middle-market ERPs

Resources and company

Amigos do Cadastro Blog and content Demos Events and webinars Success stories MDM Academy About 4MDG
Request a demo

Blog · 23 October 2026 · Paulo Cordeiro

Supplier onboarding checklist: tax documents in Brazil's reform

Which official sources to check when onboarding suppliers under Brazil's tax reform, and what to record: result, source, date, evidence and reviewer.

Under Brazil's tax reform, the tax checklist for supplier onboarding has two halves: what you check in an official source (tax ID, registration status, partners, Simples Nacional and MEI status, IBS and CBS regime, state registration and federal tax clearance) and what you record in the supplier master after each check. Without the second half, the first one proves nothing. Every check needs a stored result, source, date, evidence and the person responsible.

This scene is common in supplier master data teams. A buyer opens a request and attaches the PDF of the company registration card the supplier emailed months ago. The record is approved. Later, someone asks: when was this checked? On which website? Who reviewed it? Nobody knows.

The document exists. The proof does not. And with Brazil's tax reform, the supplier's tax regime now affects the buyer's tax credit, so that gap is no longer only an audit issue.

A note on scope: everything below applies to companies buying from suppliers in Brazil. The rules come from Brazilian law and the services are run by Brazilian authorities.

What does the law say about the supplier record?

The legal basis is Complementary Law 214/2025 (Lei Complementar 214/2025, or LC 214/2025), which creates the IBS (Imposto sobre Bens e Serviços, a goods and services tax shared by states and municipalities) and the CBS (Contribuição Social sobre Bens e Serviços, the federal goods and services contribution). Below, I separate what the law says, how to read it in operations, and what I recommend, because they are not the same thing.

What the law says

  • Art. 21, § 1: an IBS and CBS taxpayer is required to register in the IBS and CBS registries.
  • Art. 59: individuals, legal entities and entities without legal personality subject to IBS and CBS must register in a registry with a single identifier. These registries are run by the Brazilian Federal Revenue Service (Receita Federal do Brasil, RFB): the CPF (individual taxpayer ID), the CNPJ (national registry of legal entities, also used for entities without legal personality) and the CIB (Brazilian real estate registry). Paragraph 2 requires this registration data to be integrated and shared across federal, state, Federal District and municipal tax authorities.
  • Art. 41: a taxpayer that has not opted into Simples Nacional (Brazil's simplified tax regime for small businesses) or MEI (Microempreendedor Individual, the individual micro-entrepreneur regime) falls under the regular IBS and CBS regime. Those who opted in follow the rules of those regimes. Paragraph 3 allows a Simples Nacional company to calculate and pay IBS and CBS under the regular regime, an election made under Complementary Law 123/2006 (paragraph 4).
  • Art. 47: a buyer under the regular regime takes credit once the debts on the transaction are settled, and the credit is conditional on proof of the transaction through a valid electronic tax document (paragraph 1, II). This also applies to purchases from Simples Nacional companies (paragraph 3). When the Simples Nacional company has not elected the regular regime, the credit equals the amount due under Simples Nacional (paragraph 9).
  • Art. 26: lists who is not a taxpayer, including the nano-entrepreneur, the rural producer covered by art. 164 and the self-employed cargo carrier covered by art. 169. Under paragraph 1, some of these non-taxpayers may elect the regular regime.

Operational reading

The supplier's regime (regular regime, Simples Nacional without the election, Simples Nacional with the election for the regular IBS and CBS regime, MEI, or non-taxpayer) changes how the buyer's credit works and how much it is. That is why the supplier record must state which regime applies, with source and date. LC 214 does not list a tax clearance certificate as a condition for the credit. The certificate is a risk control in supplier onboarding.

Recommendation

Treat each checklist item as a field with evidence, not as a loose attachment. That is the design behind supplier onboarding with checks at the source. For the full sequence of steps, see the article on the supplier approval process, step by step. This article focuses on the tax checks and what to record.

Which tax checks should you run, and in which official source?

The table below is the core of the checklist. The "Why it matters" column shows whether the reason comes from the law or is a risk control.

Check Official source Why it matters What to record in the supplier master
Single identifier (CNPJ) Consultar Cadastro Nacional de Pessoas Jurídicas (CNPJ lookup, Federal Revenue Service, gov.br) Law: art. 59 of LC 214/2025 requires registration with a single identifier CNPJ, legal name, date and time of the check, response from the source
Registration status Comprovante de inscrição e de situação cadastral (proof of registration and status, Federal Revenue Service) Law: art. 59 (registration with a single identifier). Recommendation: a status that does not match blocks approval Status returned, date and time issued, proof issued by the source
Partners and managers (QSA, the shareholder and officer list) Same CNPJ lookup service (gov.br) Recommendation: confirm who answers for the company and cross-check internal conflict of interest rules Partners and managers returned, date of the check, evidence
Simples Nacional and MEI status Consulta optantes do Simples Nacional e do SIMEI (Simples Nacional and MEI status lookup, Federal Revenue Service) Law: art. 41 sets the regime based on the election; art. 47, paragraph 9, affects the credit Opted in or not (Simples Nacional and MEI), date and time, response from the lookup
IBS and CBS regime (regular regime; Simples Nacional without the election; Simples Nacional with the election for the regular regime; MEI; non-taxpayer under art. 26) The same status lookup, plus a supplier declaration while there is no official lookup for the election Law: arts. 26, 41 and 47 of LC 214/2025 Regime, origin of the information (lookup or declaration), date, evidence, flag "confirmed" or "to be confirmed in an official source"
State tax registration The finance department (Secretaria da Fazenda) of the supplier's state Risk: confirm the registration in the state where the supplier operates Number, state, status returned, date of the check, evidence
Federal tax standing Emitir certidão de regularidade fiscal (Certidão Conjunta, the joint federal tax clearance certificate from RFB and PGFN, gov.br) Risk: not a legal condition for the credit under LC 214; shows outstanding federal taxes and federal active debt Type (clear, positive with the effect of clear, or positive), issue date, validity stated on the certificate, file issued by the source

The Certidão Conjunta (federal tax clearance certificate) shows the company's standing with the RFB and the PGFN (Procuradoria-Geral da Fazenda Nacional, the Attorney General's Office for the National Treasury), including social security contributions. It comes in three types: Negativa (clear), Positiva com efeitos de negativa (positive with the effect of clear, when the outstanding amount is suspended, for example under an installment plan) and Positiva (positive). Recording only "has a certificate" loses that difference.

What should you record after each check?

This is where most checklists stop. Everyone has a list of documents. What is missing is the record of the check. Every record needs:

  • Result: what the source returned (status, opted in or not, certificate type).
  • Source: name of the service and URL.
  • Date and time of the check.
  • Attached evidence: the proof or response from the source itself, not the screenshot the supplier sent.
  • Who reviewed it: the person or process that ran the check.
  • Validity or next review date: when that information expires or needs to be checked again.

How often to recheck is the subject of a separate article in this series. For now, the field just needs to exist and be filled in, ideally inside an onboarding workflow with an audit trail.

Storing evidence with date, time and the source's response is what 4MDG describes on its data sources page. The same logic sits behind supplier due diligence.

What if there is no official lookup?

That is the case for a Simples Nacional company electing the regular IBS and CBS regime. The status lookup shows whether the company is in Simples Nacional or MEI. As of October 23, 2026, I could not confirm a public official lookup that shows whether the company made the art. 41, paragraph 3 election.

In that case, do not invent certainty. Record the supplier's declaration with date and evidence, flag the field as "to be confirmed in an official source", and check it against the tax documents the supplier issues. When an official lookup exists, the confirmation goes into the same field.

Hypothetical example

This example is hypothetical and only shows how to record the information. Supplier X is a distributor in Simples Nacional. In the supplier portal, it declares that it elected the regular IBS and CBS regime. How to record it:

  1. Simples Nacional: "opted in", with date, time and the response from the status lookup.
  2. IBS and CBS regime: "Simples Nacional with election for the regular regime", origin "supplier declaration", with the dated declaration attached.
  3. Field status: "to be confirmed in an official source".
  4. Review: when the first tax documents from Supplier X arrive, someone checks that they match the declared regime and records who checked and when.

Anyone who opens that record six months later knows where the information came from and how reliable it is.

Where should you start?

  1. List the tax fields your supplier master already has and mark which ones store source, date and evidence.
  2. Create the IBS and CBS regime field with the five values in the table and the "confirmed" or "to be confirmed in an official source" flag.
  3. Replace the file sent by the supplier with the proof issued by the official source, starting with the suppliers that matter most to procurement.
  4. Define who reviews each check and record that name in the supplier master.
  5. Put this checklist into the approval flow, so no supplier is approved with a tax field lacking evidence.

For the wider picture of the reform and master data, see the Brazil tax reform page and the article on customer master data and Brazil's tax reform.

Frequently asked questions

Is a clear tax certificate required to take IBS and CBS credit?

Not under LC 214/2025. Art. 47 makes the credit conditional on the debt on the transaction being settled and on proof through a valid electronic tax document. The Certidão Conjunta (federal tax clearance certificate) is a risk control in supplier onboarding: it shows the supplier's federal debts, but the law does not list it as a requirement for the credit.

Can I accept the CNPJ registration card the supplier sent?

As a reference, yes. As evidence, no. A document sent by the supplier does not show when or where it was issued. Issue the proof of registration and status at the Federal Revenue Service and record the date, time and the file from the source itself.

How do I know whether a Simples Nacional supplier elected the regular IBS and CBS regime?

The Federal Revenue Service status lookup shows whether the supplier is in Simples Nacional or MEI. For the election of the regular regime, as of October 23, 2026, there is no confirmed public official lookup. Record the supplier's declaration with evidence, flag it "to be confirmed in an official source" and check it against the tax documents issued. The details of the election are the subject of a separate article in this series.

Do individual suppliers or rural producers follow the same checklist?

Yes, with adjustments. Art. 26 lists who is not a taxpayer, and art. 164 covers rural producers, who have their own credit rules for the buyer. That is the subject of a separate article in this series.

Which non-tax documents stay on the checklist?

The ones your onboarding policy already requires, such as labor documents, articles of incorporation and bank details. This article covers only the tax part linked to the reform; the rest follows your company's and your legal team's rules.

How 4MDG can help

An undated PDF with no source is fixed with process. The 4MDG supplier onboarding platform runs on MDM integrated with the ERP: the supplier comes in through a portal, tax status and certificates are checked in official sources rather than in the screenshot the supplier sent, approval follows a workflow with approval levels and an audit trail, and certificate expiry is monitored. If you want to review your supplier master with this checklist in hand, request a diagnosis with a specialist.

This article is for information only and does not replace legal or tax advice. IBS and CBS regulations are still being issued; check the current wording of the rules.

Sources

Have a question or want to talk about this?

Talk to a 4MDG specialist — we reply through the channel you prefer.

The international code is added when you save.

Message on WhatsApp