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 decisions with clear assumptions and realistic examples.
Featured calculators
Start with tools that cover common savings, debt, credit-card, and mortgage decisions.
Emergency Fund Calculator
Calculate an emergency-fund target from essential monthly expenses, estimate when the current savings plan may reach it, and find the contribution needed for a deadline.
How Long Will My Savings Last? Calculator
Estimate how long a savings balance may support recurring withdrawals, including an optional return, annual withdrawal changes, and a target-duration comparison.
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.
Debt-to-Income Ratio Calculator
Calculate total debt-to-income ratio, housing share of gross income, monthly debt obligations, and the gross-income amount left after entered debts.
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.
Mortgage Escrow Shortage Calculator
Break a mortgage payment increase into the ongoing escrow change and temporary escrow-shortage repayment, including a voluntary lump-sum comparison when the servicer accepts one.
Latest guides
See what drives the result, where simplified estimates can differ, and which questions to check before acting.
Why Did My Fixed-Rate Mortgage Payment Go Up?
Learn why taxes, homeowners insurance, escrow analysis, and an escrow shortage can raise the total payment even when a fixed mortgage rate and principal-and-interest payment do not change.
How Much Does a 1% Investment Fee Cost Over Time?
See how a 1% annual investment fee can affect long-term portfolio growth, why the impact compounds, and where to look for the fees you are actually paying.
How Long Can You Live on Your Savings?
Learn how withdrawals, investment returns, rising expenses, market volatility, and time horizon affect how long a savings balance may last.