Finance Calculators — Guides & Articles

• Calculate Your Loan Payoff Date in Excel in Minutes

  Published 2026-07-20

  Find out exactly how many months it will take to pay off your loan by entering your balance, APR, and fixed monthly payment in Excel or our free online tool.

  

• How to Calculate Car Loan Interest for Your Tax Return

  Published 2026-07-20

  Figure out exactly what car loan interest you can claim on your taxes. Enter price, down payment, APR, and term to see monthly payment and total interest.

  

• How to Calculate Inflation Premium for Future Costs

  Published 2026-07-19

  Find the inflation premium on any amount in seconds: enter today’s dollars, pick an inflation rate, and see future cost and purchasing power instantly.

  

• How to Calculate Home Mortgage Affordability in 3 Steps

  Published 2026-07-19

  Use the 28/36 rule and a free Home Affordability Calculator to find the maximum home price you qualify for based on income, debts, and down payment.

  

• How to Calculate Discount Rate and Stack Coupons Correctly

  Published 2026-07-19

  Find the exact sale price and true savings with a discount rate calculator. Learn why stacking 20% then 10% off equals 28% total, not 30%, and how to apply…

  

• How to Use the Compound Interest Formula for Faster Savings

  Published 2026-07-19

  Discover the exact compound interest formula and see how small changes in compounding frequency can grow your savings faster—calculate it instantly online.

  

• Calculate Loan Payoff Date in Months and Years

  Published 2026-07-17

  Find out exactly when your loan ends at a fixed monthly payment. Use the free Loan Payoff Calculator to see months, years, total interest, and total paid.

  

• How to Calculate Inflation from GDP Deflator in 3 Steps

  Published 2026-07-17

  Find the exact inflation rate using the GDP deflator formula: (Nominal GDP ÷ Real GDP) × 100. See how future costs and purchasing power change instantly…

  

• How to Calculate Home Loan Affordability in 3 Steps

  Published 2026-07-17

  Calculate how much home you can afford using the 28/36 rule. Enter your income, debts, and down payment to find your maximum home price instantly.

  

• Calculate Discount Percentage in Excel and Beyond

  Published 2026-07-17

  Find the exact sale price and savings for any discount—single or stacked—using Excel formulas or an instant online tool. See why 20% then 10% equals 28%…