Financial calculators and decision guides
Use your numbers to compare financial choices.
Estimate growth, future costs, savings contributions, debt tradeoffs, credit-card offers, and mortgage payoff strategies with clear assumptions and realistic examples.
Featured calculators
Start with tools that cover common savings, debt, credit-card, and mortgage decisions.
Mortgage Extra Payment Calculator
Estimate how monthly extra principal, annual extra payments, and a one-time lump sum may change mortgage interest and payoff timing.
Open tool →Credit Card Payoff Calculator
Estimate a credit-card payoff date and interest from a fixed monthly payment, compare an extra payment, or calculate the payment needed for a target payoff period.
Open tool →Balance Transfer Calculator
Compare keeping a credit-card balance with moving it to a promotional balance-transfer offer, including the fee, promotional deadline, payoff timing, and estimated savings.
Open tool →Pay Off Debt or Keep Cash Calculator
Compare paying down debt with keeping cash in savings, including interest avoided, after-tax savings interest, payoff timing, liquidity, and an optional investment scenario.
Open tool →Compound Interest Calculator
Estimate how a starting balance and monthly contributions can grow over time.
Open tool →Savings Goal Calculator
Estimate the monthly contribution needed to reach a future savings goal based on current savings, time, and expected investment return.
Open tool →Latest guides
See what drives the result, where simplified estimates can differ, and which questions to check before acting.
How Much Should You Pay on a Credit Card Each Month? Payoff and Target-Date Examples
Learn how a fixed credit-card payment, extra monthly amount, APR, and target payoff period affect interest and repayment time.
Read guide →Do Extra Mortgage Payments Really Save Money? Monthly, Annual, and Lump-Sum Examples
Learn how extra mortgage principal may change interest, payoff timing, liquidity, recasting, and the choice between monthly additions and lump sums.
Read guide →Is a Balance Transfer Worth It? Compare the Fee, Promotional Rate, and Payoff Deadline
Compare a balance-transfer fee, promotional APR, payoff deadline, later APR, and monthly payment before moving credit-card debt.
Read guide →