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Alagoas ICMS Calculator

Working out ICMS in Alagoas? The standard internal rate is 20.5%. Enter your amount below and get the net, tax and total in one click. The rate rose from 19% to 20.5% on 1 April 2026. A 1% poverty-fund addition (FECOEP) may apply on some products, bringing the total to 21.5%.

Alagoas ICMS Calculator

Results update live as you type. Amounts in BRL. Nothing leaves your browser.

Standard internal rate: 20.5% — The rate rose from 19% to 20.5% on 1 April 2026. A 1% poverty-fund addition (FECOEP) may apply on some products, bringing the total to 21.5%.

Your Numbers
“Add tax” starts from a net price. “Remove tax” works backwards from a total that already includes tax. This is the STANDARD INTERNAL rate in Alagoas — This is the state's standard internal rate for most goods and services. Reduced tax bases, exemptions and tax substitution (ICMS-ST) can change the effective tax on specific items, and sales to buyers in other states generally use the interstate rates of 7% or 12% instead — this calculator does not cover those cases. If a different rate applies to your item, type it into the rate field. If you know a different rate applies to your item, type it into the rate field.
Your result
0.00
total including tax
Net amount (before tax)0.00
Tax amount0.00
Gross amount (with tax)0.00
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Internal rate verified November 2026 · Source: Lei nº 9.776/2025, art. 1º — Alagoas

How to calculate Alagoas ICMS in 3 steps

  1. Enter your amount. Type the price you are working with — either before tax or tax-inclusive, depending on what you have.
  2. Pick the rate and direction. The 20.5% standard internal rate is pre-filled and editable; choose “Add tax” or “Remove tax”.
  3. Read the split instantly. You get the net amount, the exact tax, and the gross total — ready to quote, invoice, or check a receipt against.

Why getting the Alagoas split right matters

Tax is the part of the price most people get wrong, because the headline rate is rarely the whole story: in Brazil the internal rate differs by state, interstate sales use different rates, and tax substitution (ICMS-ST) changes who pays on some goods. This calculator starts from the general internal rate — and if your item qualifies for a different treatment, type that rate in and it calculates it instead.

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Alagoas ICMS FAQ

The standard internal rate is 20.5%. The rate rose from 19% to 20.5% on 1 April 2026. A 1% poverty-fund addition (FECOEP) may apply on some products, bringing the total to 21.5%.
Multiply the net price by the internal rate and add it on: a R$1,000.00 item at 20.5% gives R$205.00 of tax and a R$1,205.00 total. In the calculator, choose “Add tax”, enter the amount and rate, and the split appears instantly.
Divide the gross total by (1 + rate ÷ 100). At 20.5%, a R$1,000.00 total divides to a R$829.88 net — the tax inside it is R$170.12. Choose “Remove tax” in the calculator and it does this for you.
No. This is the state's standard internal rate for most goods and services. Reduced tax bases, exemptions and tax substitution (ICMS-ST) can change the effective tax on specific items, and sales to buyers in other states generally use the interstate rates of 7% or 12% instead — this calculator does not cover those cases. If a different rate applies to your item, type it into the rate field.
Sales to buyers in other states generally use the interstate rates of 7% or 12%, not the internal rate, and tax substitution (ICMS-ST) may also apply. This calculator starts from the internal rate; type 7% or 12% into the rate field if you are pricing an interstate sale.
Yes — unlimited calculations, no signup, no watermark. Everything runs in your browser; nothing you type is uploaded anywhere.

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