Summary
Brazilian telecom carriers are in a position to capture meaningful value depending on the Supreme Court's upcoming handling of the Fistel tax dispute, Bank of America analysts say. The case - scheduled for the Court's virtual docket between May 8 and 15 - centers on whether past withheld payments should be repaid and whether future charges will remain in force. The analysis highlights how suspended payments and full provisioning have supported free cash flow without impacting reported net income, and why the risk/reward may favor investors if the Court rules in the operators' favor.
The legal issue and timeline
Fistel is a levy imposed by Anatel to finance telecom oversight and regulation. In 2020, telecom operators were permitted to suspend payment of the TFF, a principal component of Fistel, because of the pandemic. Operators continued withholding payments even after the formal suspension ended, which has given rise to the current litigation over whether the charge should be abolished or collected retroactively.
The Supreme Court is slated to discuss the dispute from May 8 to May 15. That schedule is conditional - the Court could seek additional time, or take the matter off the virtual docket for an in-person hearing - so a definitive ruling in May is not guaranteed, though analysts see a reasonable probability of a decision during that window.
How the accounting and cash flow picture looks
Operators who suspended payments benefitted from improved free cash flow while the amounts remained off the cash flow statement. Net income was not affected because companies have recorded full provisions for the disputed amounts. Bank of America notes the legal case is bifurcated between an injunction at the Federal Regional Court, which has been in place since 2021, and the Supreme Court challenge that raises constitutional questions around the levy.
BofA sensitivity and base-case assumptions
Bank of America’s sensitivity analysis frames the debate as having asymmetric payoffs. The bullish scenario, which assumes complete exemption from past and future payments, produces a larger implied net present value uplift than the downside in the bearish scenario would subtract from equity value. The analysts’ base case assumes full settlement of outstanding balances but reinstates only 50 percent of future Fistel charges.
Company-level implications
TIM - Under BofA’s upside scenario, TIM would see an implied NPV upside of 8 percent. TIM has been withholding approximately R$500 million per year in Fistel payments, an amount equal to roughly 11 percent of its reported net income. Accrued outstanding balances sum to R$4.3 billion, which the bank notes is about 7 percent of TIM’s market capitalization. The company stopped paying in April 2020 and has fully provided for the disputed sums. Separately, Tim S.A. recently refreshed its 2026 guidance, targeting around 5 percent service revenue growth and 6 to 8 percent EBITDA growth, and it completed the acquisition of the remaining 51 percent of I-Systems to make it a wholly owned unit.
Vivo - For Telefonica Brasil - Vivo, a favorable ruling would translate to an implied NPV upside of about 7 percent, according to the analysts. Vivo has not been paying roughly R$800 million annually in Fistel taxes, representing about 13 percent of its net income. Outstanding liabilities reached R$6.1 billion, or around 5 percent of the company’s market capitalization. Like peers, Vivo ceased payments in April 2020 and has fully provisioned the contested amounts. In fourth-quarter 2025 results, Telefonica Brasil reported net revenue of R$15.6 billion, a year-over-year increase of 7.1 percent, and net income of R$1.88 billion. The company also announced a new share repurchase program and appointed Rodrigo Rossi Monari as chief financial officer.
What this means for investors and the telecom sector
Bank of America’s work suggests the telecom sector in Brazil is sensitive to the legal outcome, with cash flow upside likely in the event of a favorable ruling and material balances already carved out on company balance sheets. The combination of suspended payments, significant provisions and the relative weight of outstanding liabilities versus market caps creates a scenario where a court decision could yield measurable equity upside, particularly if the Court resolves constitutionality in favor of operators and limits future charges.
Note on timing and uncertainty - While analysts see a credible path to a May ruling, procedural developments at the Supreme Court could delay resolution. The legal picture remains split between the Federal Regional Court injunction and the higher court constitutional challenge.