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CalcWolf Tax Calculadora de Imposto para Autônomo
Tax

Calculate Self-Employment Tax (1099)

Calculate SE tax, income tax, and quarterly estimated payments for freelancers and contractors.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

No Brasil como MEI

MEI (até R$81.000/ano): imposto fixo de ~R$70/mês (DAS) cobrindo INSS + ISS ou ICMS. É o regime mais simples e barato. Acima do teto: ME Simples Nacional com alíquota de 6-15,5% do faturamento. PJ Lucro Presumido: ~11-16% para serviços. A decisão MEI vs ME vs Lucro Presumido depende do faturamento e tipo de atividade.

Nos EUA

Self-employment tax: 15,3% (Social Security 12,4% + Medicare 2,9%). Autônomos pagam ambas as partes. Com $80.000 de lucro: ~$11.300 de SE tax. A estrutura de S-Corp pode reduzir significativamente acima de $50.000-60.000.

⚡ CalcWolf Insight

The single biggest tax mistake freelancers make: not paying quarterly estimated taxes. The IRS charges underpayment penalties of 8-10% (annualized) on missed quarterly payments. Set up automatic quarterly transfers to the IRS via EFTPS.gov — treat it like a bill, not an optional payment.

Frequently asked questions
Quanto paga um MEI?
~R$70/mês fixo (DAS). Cobre INSS + imposto municipal/estadual. O regime mais simples do Brasil.
Quando sair do MEI?
Quando faturamento exceder R$81.000/ano, ou se precisar de mais de 1 funcionário, ou se a atividade não é permitida no MEI.
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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