Start from the gross amount and subtract INSS (11% up to the R$ 8,475.55 ceiling), income tax (the 2026 monthly table, on a base already reduced by INSS) and ISS if the city requires withholding. On a R$ 3,000 RPA, INSS is R$ 330, income tax is zero (income up to R$ 5,000) and the freelancer receives R$ 2,670. The company pays R$ 3,600 in total, because it adds a 20% employer contribution.