Thesis of the Century (STF Theme 69).
Exclusion of ICMS from the PIS/COFINS base — RE 574.706 and the 2021 modulation.

History of the ruling and composition of the decision

Origin of the thesis

The discussion dates back to the 1990s. The central controversy: ICMS, although charged separately on the invoice, is recorded accounting-wise as gross revenue by the company? If so, it is part of the PIS/COFINS base (the cumulative regime of Law 9.718/1998 or the non-cumulative regime of Laws 10.637/2002 and 10.833/2003); if not, it must be excluded as it is not the company’s own revenue.

Procedural trajectory

• RE 240.785 (2014): the first favorable STF precedent for the exclusion, but without binding effect — an individual case
• Recognition of general repercussion: September 2008 (Theme 69)
• Merits ruling: 03.15.2017 — the STF, by 6 votes to 4, sets the exclusion
• The Union’s modulation request: filed in May 2017
• Modulation decision: 05.13.2021 — effects from 03.15.2017 (the date of the ruling), except for suits filed by that date, which keep a retroactive right of 5 years from filing

Thesis set

“ICMS does not form part of the calculation base for the levy of PIS and COFINS.” (Justice Cármen Lúcia, rapporteur)

Central legal basis: the constitutional concept of “revenue” or “turnover” (Federal Constitution, art. 195, I, b) does not cover amounts that merely pass through the company’s accounting on their way to another entity — ICMS is the State’s revenue, not the taxpaying company’s. Application of the ability-to-pay principle (art. 145, §1).

Modulation (05.13.2021) — who still has a retroactive right

Why there was a modulation

The Union argued that a retroactive application of Theme 69 would create a catastrophic fiscal impact — an estimate of BRL 250-350 billion in refunds of PIS/COFINS collected from 1996 to 2017. The STF, weighing legal certainty and budgetary impact, modulated the effects of the decision.

The modulation rule

The 05.13.2021 decision established:

• Effects of the thesis: from 03.15.2017 (the date of the merits ruling), the exclusion is mandatory for all taxpayers
• Retroactive exception: taxpayers that already had a lawsuit filed by 03.15.2017 keep the right to recover PIS/COFINS retroactively, up to 5 years before filing (National Tax Code, art. 168)
• Those who filed after 03.15.2017: have only a prospective right (from the date of the ruling — they can recover from 03.15.2017 onward)

The “suit filed by 03.15.2017” criterion

The cut-off criterion is the filing of the suit, not a favorable decision. Any lawsuit — writ of mandamus, ordinary action, tax-foreclosure objection — filed by that date and discussing the matter of Theme 69 counts, even if still pending.

What was settled

• The ICMS shown on the invoice (and not the ICMS paid/collected) is the amount to be excluded — set in RE 574.706 and confirmed in clarification motions
• Application to all taxpayers — regardless of size or tax regime (Actual Profit, Presumed Profit or Simples Nacional within the sub-limit)
• Usage modality: administrative offset via PER/DCOMP (with prior qualification if obtained judicially) or direct imputation in the current assessment

Practical application — calculation and operation

What to exclude

The taxpayer must exclude from the PIS and COFINS base the value of the ICMS shown on each exit invoice. It is not the ICMS paid at the end of the period (after credits), but the value shown on each individual operation.

Simplified calculation

Example: a retail company with monthly revenue of BRL 10 million, average state ICMS rate of 18%:

• Gross revenue: BRL 10,000,000
• ICMS shown on invoices: BRL 1,800,000 (18%)
• PIS/COFINS base before the thesis: BRL 10,000,000
• PIS/COFINS base after the thesis: BRL 8,200,000
• Monthly saving (non-cumulative regime, combined rate 9.25%): BRL 166,500
• Estimated annual saving: BRL 1,998,000

Usage modality

There are two paths:

1. Direct prospective application — assess PIS/COFINS already excluding ICMS. It does not require judicial authorization — the consolidated thesis applies
2. Retroactive recovery via PER/DCOMP — requires:
   • A writ of mandamus with a final and unappealable decision recognizing the right (STJ Summaries 213 and 460)
   • Prior qualification of the credit at the Federal Revenue (administrative procedure)
   • After qualification, monthly filing of a DCOMP to offset against taxes due

Digital tax audit

A 5-year retroactive calculation requires invoice-by-invoice analysis of hundreds of thousands of operations. The firm operates with a digital tax-audit pipeline that processes SPED Fiscal and electronic invoices to reconstitute the historical calculation — doing it manually would be unfeasible.

“Offspring” theses — derived from the Thesis of the Century

The consolidation of Theme 69 opened the way for multiple derived theses applying the same reasoning (excluding taxes transferred to third parties from the base of other taxes):

Offspring thesis 1 — Exclusion of ISS from the PIS/COFINS base

A literal application of the Theme 69 reasoning to ISS. It is on trial at the STF — Theme 118 (RE 592.616, not final as of 05/26/2026). Service-provider companies (law, consulting, IT) that paid PIS/COFINS on gross revenue including ISS have a valid thesis. Caution: the STF has not yet decided definitively — a prospective writ of mandamus is advisable to suspend enforceability while awaiting the ruling.

Offspring thesis 2 — Exclusion of PIS/COFINS from its own base

A self-exclusion thesis: PIS and COFINS should not be levied on themselves (the “inside” calculation). A minority position — the STJ has been against it. Low risk-benefit.

Offspring thesis 3 — Exclusion of ICMS-ST from the PIS/COFINS base

Application to the Tax Substitution regime. The discussion is ongoing — STJ Theme 1.125 is still on trial. For taxpayers subject to a significant ST regime, it is worth monitoring.

Offspring thesis 4 — Exclusion of IPI from the PIS/COFINS base

The same reasoning applied to IPI. IPI is already shown separately and does not form part of the industrial company’s gross revenue — a thesis widely recognized by the Federal Revenue without the need for a lawsuit. More executive than judicial.

Offspring thesis 5 — Exclusion of ISS from the IRPJ/CSLL base (Presumed Profit)

An inverse application: Presumed-Profit companies that calculate IRPJ/CSLL on gross revenue may try to exclude ISS from that base. A thesis still under case-law construction — the STJ has not yet set it.

Each offspring thesis requires a specific analysis of admissibility, procedural viability and the risk-benefit balance. The firm works with case-by-case modeling.

Current opportunities (2026) — who can still benefit

Scenario 1 — Company that filed by 03.15.2017

It keeps the right to retroactive recovery:

• 5 years before filing (the general rule of National Tax Code, art. 168)
• It should already be in the phase of judgment enforcement or qualification at the Federal Revenue
• A typically significant credit — large companies may have BRL 100 million+ to recover

Scenario 2 — Company that did NOT file by 03.15.2017

A prospective right only:

• It can apply the exclusion in the current assessment (no need for a lawsuit)
• It can seek recovery from 03.15.2017 — 5 retroactive years counted from the final decision of any prospective writ of mandamus
• A consolidated thesis — zero risk of assessment for direct application

Scenario 3 — A new company or one that never used it

It can still recover PIS/COFINS overpaid in the last 5 years:

• By the consolidated thesis (Theme 69), retroactive application is possible since 03.15.2017 (the National Tax Code limitation period)
• A digital tax audit reconstitutes the amounts
• Calculation, a writ of mandamus for qualification, monthly offset DCOMP

Scenario 4 — Offspring theses

Companies that already used Theme 69 can now structure offspring theses — especially ISS (Theme 118) and ICMS-ST (Theme 1.125), awaiting the STF/STJ ruling. A prospective writ of mandamus to suspend enforceability while there is no definitive decision.

Current risks

• Limitation period: 5 years counted from the undue payment. A 2018 credit is time-barred in 2023 — a company that does not act loses it definitively
• Rigorous prior qualification: the Federal Revenue has intensified its analysis. A poorly done calculation = rejection + lost time
• Attention to the modulation: applying undue retroactivity (filing after 03.15.2017 and claiming 5 years before) is a common cause of disallowance

How the firm acts on Theme 69

The firm acts on three fronts in Theme 69:

1. Direct prospective application (no litigation)

• Diagnosis of applicability according to the client’s tax regime (Actual, Presumed, Simples)
• Recalculation of the PIS/COFINS assessment of the last 5 years excluding the ICMS shown
• Amendment of ECF, EFD-Contribuições and DCOMP
• Application in the current assessment

2. Writ of mandamus and retroactive qualification

• Admissibility modeling (checking for a prior action or whether it is a new writ of mandamus)
• A writ of mandamus declaring the right to offset (STJ Summaries 213 and 460)
• After the decision becomes final, prior qualification before the Federal Revenue with a Selic statement
• Monthly PER/DCOMP operation until the credit is exhausted

3. Active offspring theses

• Specific admissibility analysis (Theme 118 ISS, Theme 1.125 ICMS-ST)
• A prospective writ of mandamus to suspend enforceability while the STF/STJ has not decided
• Monitoring the decision and adjusting the strategy

The fee model combines a fixed part (analysis + filing) and a variable part tied to the recovered credit (% of the qualified and offset amount). In high-value projects (estimated credit > BRL 5 million), a mostly success-fee model. A digital tax audit processes the historical SPEDs with no upfront cost in success-linked cases.