Quarterly Tax Calculator
ABD serbest meslek sahipleri için ücretsiz MCP sunucusu, üç aylık tahmini vergiler. estimateQuarterlyTax, yıllık net kâr, dosyalama durumu, eyalet ve vergi yılından (2025/2026, QBI uyumlu) federal + eyalet gelir vergisi, SE vergisi ve çeyrek başına 4 taksiti hesaplar; getPaymentCalendar, hafta sonları ve IRS tatilleri ertelenmiş 4 IRS üç aylık son tarihini döndürür. Uzak uç nokta: https://mcp.quarterlytax.al157.xyz/mcp (Streamable HTTP, kimlik doğrulama yok). Salt okunur hesaplamalar; veri saklanmaz.
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Dokümantasyon
Your numbers
Business revenue minus expenses — the profit you report.
State tax is a rough estimate — graduated marginal brackets for CA, NY, NJ, HI and OR; single approximate marginal rate elsewhere.
§199A simplified estimate — assumes a non-SSTB business with no W-2 wages paid. Thresholds follow the selected tax year.
tax-rules: 2026 federal states 2025 Rates verified for tax year 2026 — rates change yearly, IRS figures govern. State estimates: 2025 data.
Federal / quarter
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State / quarter
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Safe harbor comparison
Payment calendar
Pay via IRS Direct Pay ↗ Pay via EFTPS ↗
Due dates follow the IRS rule: a date falling on a weekend or legal holiday moves to the next business day. Always confirm on irs.gov before paying.