Brazil's Biggest Tax Overhaul in a Generation: What CBS and IBS Mean for Foreign Businesses

Brazil is carrying out its biggest tax reform in a generation. Five consumption taxes are being replaced by a dual value-added tax — CBS at the federal level and IBS shared by states and municipalities — plus a selective "sin" tax. 2026 is the test year: invoices must show the new taxes, but the amounts are not yet collected. This is what foreign businesses selling into or operating in Brazil need to understand now.

We are an English-speaking, OAB-licensed Brazilian law firm advising foreign companies on establishing and running operations here. Brazil's old consumption-tax system was among the most complex in the world, and the transition to the new one is itself intricate. This briefing lays out the legal foundation, the year-by-year timeline, the 2026 milestones that already require action, and where foreign suppliers and subsidiaries are affected.

What is being replaced, and with what

The reform was launched by Constitutional Amendment EC 132/2023 and given its rules by Lei Complementar 214/2025, sanctioned in January 2025. Together they dismantle a system that layered federal, state, and municipal consumption taxes on top of one another and replace it with a cleaner dual VAT.

Five taxes are being phased out:

• PIS and Cofins — federal social-contribution taxes on revenue
• IPI — the federal tax on industrialised products
• ICMS — the state tax on goods and some services, long infamous for 27 different state regimes
• ISS — the municipal service tax, with thousands of local variations

In their place come three new charges:

The Selective Tax (Imposto Seletivo) is a new levy on goods considered harmful to health or the environment — a targeted charge sitting alongside the general VAT rather than a replacement for anything.

Why the design matters: non-cumulative and destination-based

The new VAT is built on two principles that address Brazil's worst old habits. It is non-cumulative with a broad credit: tax paid on inputs is credited against tax on outputs, so the charge falls on value added at each stage rather than cascading and taxing tax. And it is destination-based: revenue accrues to where goods and services are consumed, not where they are produced — dismantling the interstate ICMS distortions and the "fiscal war" between states.

To understand why this is such a large change, it helps to picture what it replaces. Under the old system, the same transaction could attract federal PIS and Cofins on revenue, IPI if goods were industrialised, ICMS at a rate that differed across all 27 state jurisdictions, and municipal ISS with thousands of local variations — each with its own base, its own credit rules, and its own compliance regime. Credits earned under one tax often could not be used against another, so tax stuck to the product and compounded down the supply chain. The result was a consumption-tax system routinely described as one of the most complex in the world, a cost in itself before a single real of tax was paid.

For a business, the promise of the new design is a system that is more neutral and, in theory, simpler than the maze it replaces: one federal charge and one sub-national charge, broad and mutual crediting, and tax that lands where consumption happens. The catch is that the credit mechanism only works cleanly if your invoicing and systems capture the new taxes correctly from the start — which is precisely what 2026 is about. A miscoded invoice does not just risk a penalty; it can break the credit chain for whoever buys from you.

The transition timeline: 2026 to 2033

Brazil is not switching over in one step. The old and new systems run in parallel for years while the machinery is tested and calibrated.

1. 2026 — the test year

   Invoices must state CBS at 0.9% and IBS at 0.1% — a combined 1%. But the amounts are not actually collected provided the taxpayer meets the ancillary obligations (issuing compliant documents). It is a live rehearsal: the system runs, nobody pays yet.

2. 2027 — CBS goes live

   CBS collection begins and PIS and Cofins are extinguished. The federal piece of the new VAT becomes real.

3. 2029–2032 — IBS phases in

   IBS is gradually introduced as ICMS and ISS are gradually withdrawn, over a multi-year glide path so states and municipalities adjust.

4. 2033 — old taxes fully gone

   The transition completes: the legacy taxes are fully extinguished and the dual VAT stands alone.

The 2026 milestones already in force

The regulations landed in 2026. The CBS Regulation (Decreto 12.955/2026) and the IBS Regulation (CGIBS Resolution 06/2026) were both published on 29 April 2026, filling in the detail beneath Lei Complementar 214/2025. IBS is administered by a CGIBS management committee — a shared body coordinating the states and municipalities, since IBS belongs to both.

The milestone with the hardest deadline is invoicing. From 1 August 2026, major electronic invoices — the NF-e (goods) and NFC-e (consumer) documents at the centre of Brazilian commerce — must carry the new CBS, IBS, and Selective Tax fields. If your systems issue Brazilian e-invoices, they must be updated to populate those fields by that date.

Why this reaches foreign businesses

The reform is not only a domestic matter. Its scope deliberately extends to cross-border commerce, and three groups of foreign businesses should pay attention.

Non-resident suppliers selling to Brazilian consumers

Non-resident suppliers of digital services and goods sold to Brazilian consumers fall within CBS and IBS. The system uses split-payment and platform-liability mechanics to collect the tax on cross-border and marketplace sales — meaning a foreign seller, or the platform facilitating the sale, can be drawn into the Brazilian VAT even without a local establishment. If you sell software, subscriptions, or goods into Brazil remotely, this is a change to how your Brazilian sales are taxed.

Importers

Businesses importing into Brazil must re-map pricing and customs treatment as the new VAT replaces the import incidence of the old taxes. The credit mechanism changes how import tax flows through to your cost base.

Operating subsidiaries

A foreign group with a Brazilian operating company must update ERP, invoicing, and pricing for the new fields and the new credit logic. This is systems work as much as tax work, and the August 2026 e-invoice deadline sets the pace. A subsidiary that sells to businesses also has to think about its customers: because the tax is non-cumulative, the credit your buyer can claim depends on your invoice being correct, so getting the fields right is a commercial obligation to your customers, not merely a compliance task for your own accounts.

Contracts and cash flow: where the money actually moves

Two practical effects deserve attention beyond the systems work. The first is cash flow. A non-cumulative VAT changes the timing of when tax is paid and when it is recovered as a credit. Depending on your position in the supply chain and the mix of inputs and outputs, you may pay tax before you recover the offsetting credit, which ties up working capital. Modelling that timing under the new mechanism — rather than assuming the old net position carries over — is part of preparing for the transition.

The second is contracts. Long-term supply and service agreements written under the old taxes rarely anticipate a wholesale change in tax incidence. If a contract fixed a price on the assumption of the old ICMS or ISS burden, the shift to CBS and IBS can move the economics between the parties. This is why tax-change and gross-up clauses matter: they decide who bears the change when the tax base or rate moves during the transition. Reviewing existing agreements — and drafting new ones with the reform in mind — avoids disputes when the new charges begin to bite in 2027 and beyond. Our business law team handles these reviews alongside the tax analysis.

In 2026 nobody pays the new VAT — but everybody has to prove they can. The rehearsal is the requirement.

What foreign companies should do now

The reform rewards early system readiness and punishes companies that wait until collection begins.

• Update invoicing and ERP to populate the new CBS, IBS, and Selective Tax fields on NF-e and NFC-e by 1 August 2026.
• Model cash flow under the credit system — the non-cumulative mechanism changes when tax is paid and recovered, which affects working capital.
• Review contracts for tax-change and gross-up clauses, so the shift in tax incidence is allocated correctly between you and your counterparties across the transition.
• Confirm the applicable rate for your specific goods or services rather than assuming a single headline figure.
• Reassess pricing into Brazil if you are a non-resident digital or goods supplier now within CBS/IBS.

These steps sit alongside the other 2026 tax changes foreign owners face — the new 10% dividend withholding and the reworked rules on getting profit and capital out of Brazil. Our tax services and business law teams handle the reform together, because for most foreign operators it is one project, not two.

How Brazil Legal Shield can help

We help foreign companies navigate the CBS/IBS transition end to end: interpreting how the new VAT applies to your specific activity, meeting the 2026 invoicing obligations, reviewing supply and customer contracts for tax-change and gross-up clauses, and coordinating with your accountant and ERP team so your systems are ready before collection begins in 2027. For non-resident suppliers, we assess whether and how your sales into Brazil now fall within CBS and IBS.

Brazil's old reputation for tax complexity was earned; the reform is meant to ease it, but the transition period is where the risk sits. Explore our tax services and Brazil business law overview, or get in touch to map the reform to your business before the next deadline.