Look beyond a typical month
Write down income you can reasonably rely on and the spending needed to keep your household running. Include less frequent costs, such as annual bills, by setting money aside over time. Moneysmart’s budgeting guide provides a structured starting point.
For variable income, a high-earning month may be a poor baseline. Review several recent months and decide which assumptions are dependable. Leave room for ordinary uncertainty rather than counting every uncommitted amount twice.
Use a total monthly debt amount
DebtZero’s monthly budget is the amount assigned to the debt plan, including the required payments represented in that plan. Check the entries against your agreements. Do not interpret an extra-payment preview as money already available.
For example, if your chosen total is US$350, review whether the model can cover the entered requirements. The app can show a shortfall. It cannot know about an expense or obligation you have not entered.
Connect the plan to payday without confusing the model
The payday feature helps you see which debts fall due before the next payday. A weekly or fortnightly income rhythm does not change the payoff engine: its estimates still use monthly repayment periods.
Use the weekly review to check dates and decide whether an optional extra payment is realistic. When income changes, update the budget deliberately and compare the new forecast with the old assumptions. You can record extra amounts set aside without pretending that a bank transfer has occurred.
Sources and further reading
Sources checked on 24 September 2026.
An educational planning tool, not personalized financial, legal or debt advice. Estimates use your inputs and simplified monthly assumptions. Your lender’s statements and agreement remain the reference.