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Compare the decision, not just the headline rate

These guides put two common options side by side: payment, total cost, flexibility and risk. Each one links to the free calculator so you can use your own numbers.

15-year mortgage vs 30-year mortgage15-Year vs 30-Year Mortgage: Which Is Better?Compare a 15-year and 30-year mortgage on monthly payment, total interest, payoff speed and cash-flow flexibility. Then run your own numbers.Roth IRA vs Traditional IRARoth vs Traditional IRA: Which Should You Choose?Compare Roth and traditional IRA tax timing, deductions, withdrawal rules and required minimum distributions. Then estimate your own contribution.Lease vs BuyLease vs Buy a Car: Which Is Better for You?Compare leasing and buying a car on upfront cost, monthly payment, ownership, mileage limits, maintenance and end-of-term options.Hourly vs SalaryHourly vs Salary: How to Compare Job OffersCompare hourly and salaried pay on annual gross, overtime, benefits, income stability and taxes. Convert an hourly rate to a salary before you decide.Fixed rate vs Variable rateFixed-Rate vs Variable-Rate Mortgage: Which Is Better?Compare fixed-rate and variable-rate mortgages on payment certainty, initial rate, risk and flexibility. Then run your own numbers.Biweekly vs MonthlyBiweekly vs Monthly Mortgage PaymentsCompare biweekly and monthly mortgage payments on payment frequency, total interest and payoff speed. See the trade-offs before switching.

General information only, not financial, tax or legal advice. Last reviewed 2026-11-11.