Money & mortgage
Work out credit-card payoff timing, compare debt snowball and avalanche plans, and calculate simple interest before choosing a repayment approach.
Calculator set
Open a calculator for an immediate estimate, then use its method notes, examples, limits, and sources to understand the result.
Understand, then calculate
Debt payoff planning begins with the balance, annual rate, minimum payment, and the extra amount you can sustain each month.
The lowest-interest strategy and the easiest strategy to follow are not always the same. Compare both the cost and the monthly behavior required.
Identify the decision first, then open the calculator that answers it.
Understand the recurring inputs and results instead of reading only the final number.
Choose with context
Use these distinctions to move through the Debt & interest tools without comparing unrelated results.
Use credit-card payoff for one balance and a target monthly payment.
Use snowball versus avalanche when several debts compete for the same budget.
Use simple interest for a non-compounding loan or short-term estimate.
Common questions
These answers explain how to use the estimates and where their limits begin.
The avalanche method generally saves more when all other assumptions are equal, because it targets the highest rate first.
Credit cards commonly compound and use daily balance rules, so use the dedicated credit-card tool for that case.