This free Tocantins ICMS calculator starts from the state's 20% standard internal rate. Add tax to a net price, or work backwards from a tax-inclusive total. The rate rose from 18% to 20% on 1 January 2024 (the STF's ADI 7375 decision pushed the rise to the following financial year).
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Standard internal rate: 20% — The rate rose from 18% to 20% on 1 January 2024 (the STF's ADI 7375 decision pushed the rise to the following financial year).
Internal rate verified November 2026 · Source: SEFAZ-TO — Instrução Normativa GABSEC nº 09/2023
Whether you are a seller working out what to charge or a buyer checking a receipt, the split matters: net, tax, total. Get any one of them wrong and either you absorb the tax or your customer disputes the invoice. This calculator shows all three instantly, in Brazilian reais.
See all Brazilian states, try the tax calculator for any rate, or put the result on a free invoice. More state calculators: Sergipe.