What are you trying to figure out?
Choose the question closest to the part of your financial plan you’re working through.
Compare payoff time and interest with a larger monthly payment or one-time payment.
Test extra paymentsAssign monthly income across spending, savings, sinking funds, and debt until every dollar has a job.
Build a zero-based budgetMap bills and planned spending to actual pay dates so you can see what each check needs to fund.
Plan by paycheckTurn a target amount and date into a monthly contribution for a planned expense or savings goal.
Plan a sinking fundProject contributions and interest over time, then compare how a different APY changes the result.
Estimate savings growthCompare a balance transfer with a personal loan using fees, rates, payments, payoff time, and total cost.
Compare lower-rate optionsStart with the part of your plan that needs an answer
DebtOptimizerHub groups its calculators around four connected parts of the same financial plan.
Plan monthly income, paycheck timing, and variable income.
Explore budgeting tools Savings & GoalsBuild emergency savings, sinking funds, and savings growth plans.
Explore savings tools Credit Cards & CreditUnderstand interest, minimum payments, utilization, and balance transfers.
Explore credit tools Debt & PayoffCompare payoff strategies, payments, timelines, consolidation, and transfers.
Explore debt toolsBuild and track your payoff plan
Bring your debts, payoff strategies, cash flow, goals, progress, and changing projections together in one place so you can build a complete payoff plan and keep it current over time.
- Build your planAdd your debts and compare Snowball, Avalanche, Custom, and extra-payment strategies.
- Track progressRecord monthly balances and see how your projected payoff changes.
- Explore your optionsProject cash flow, test payoff goals and payment changes, and compare balance transfers, consolidation, and what-if scenarios.
- Keep it all togetherSave plans, sync across devices, review plan history, be notified when payments are due, and export your data.
Understand the choices behind the numbers
Use these guides for more context on payments, budgeting, savings, and the decisions that can change your plan.
Compare payment size with payoff time, interest cost, and monthly budget.
Read guide Payoff strategy How to Pay Off Debt FasterSee which changes can shorten payoff time, reduce interest, and make the plan easier to maintain.
Read guide Budget & cash flow How Zero-Based Budgeting WorksLearn how to assign monthly income across spending, savings, sinking funds, and debt until nothing is left unassigned.
Read guide Savings & goals How Savings Account Interest WorksSee how APY, compounding, your balance, and ongoing contributions affect savings growth over time.
Read guideCompare payoff, budget, and savings choices using consistent calculations
Calculators built to make the numbers behind each decision easier to compare
DebtOptimizerHub is built and maintained by Michael Brady, a software developer. The calculators, guides, and worked examples are designed to make payoff, cash-flow, credit, and savings math easier to understand and compare.
- Each tool explains the assumptions and calculations behind its results.
- Several calculators can carry your numbers into the next comparison.
- Results focus on the numbers behind the decision, including cash flow, savings, payments, interest, fees, payoff timing, and remaining balances.