2 calculators
Personal Finance Calculators
Build a workable budget and compare ways to repay debt.
These two tools cover income allocation and multi-debt repayment. The Budget Calculator uses the 50/30/20 rule as an editable starting point, not a required split. The Debt Payoff Calculator uses each balance, rate and minimum payment to compare snowball and avalanche repayment month by month.
Where to start
The two tools are designed to be used in sequence. Run the budget first: its "savings & debt" slice is the number that feeds everything else, and the page shows what that slice implies for an emergency fund timeline. If you carry more than one debt, take that monthly amount straight into the Debt Payoff Calculator as your extra payment and compare both payoff strategies with your real balances — the difference between them is often smaller than expected, and seeing your own numbers settles the argument quickly. For a single loan rather than a set of debts, the Loan Payoff Calculator and Extra Payment Calculator in the loans section answer the same questions with loan-specific detail. Two guides pair well with this page: snowball vs avalanche and how much emergency fund you need.
Start here
All personal finance calculators
Choosing a repayment order
With multiple debts, the repayment order can change the total interest even when the monthly budget stays the same. Directing extra money to the highest-rate balance minimizes interest under the calculator's assumptions. Starting with the smallest balance may give you an earlier account payoff, which some people find easier to maintain. Compare both schedules with your own debts, then choose the trade-off you are more likely to follow.