USAFinCalc とは？
USAFinCalc gives every American free, instant financial calculators — no signup, no ads, no BS. 13 tools including: 💵 Salary Calculator (all 50 states) 🧾 Federal Tax Calculator (2025 IRS brackets) 🏠 Mortgage Calculator with amortization 🏦 401(k) + Roth IRA growth projections 📈 Compound Interest + Capital Gains Tax 🚗 Auto Loan + Debt Payoff (Avalanche/Snowball) All calculations run 100% in your browser. Zero data collected. Updated every January with official IRS data.
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