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🏦 Banking & Investment Calculators
Authoritative banking calculators with references, assumptions, and interpretation guidance. Mobile-first with instant results.
CD Calculator
Certificate of deposit maturity value, APY & early withdrawal penalties
Paycheck Calculator
US take-home pay after taxes — all 50 states
Inflation Calculator
US dollar value 1913–2026 with official CPI data
Auto Loan Calculator
Car payments with sales tax, trade-in & full amortization
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