Calculated result
Enter values and select Calculate.
Locked snowball priority
Debts are ordered once by starting balance, with input order breaking ties. Interest accrues monthly before payments. The original sum of minimums plus extra payment remains the monthly budget; freed and unused amounts cascade to the first unpaid debt in that locked order.
Model limits
The simulation caps every payment at the amount owed and stops after 1,200 months if payoff is not reached. Real issuers may use daily interest, fees, changing minimums, or other rules. This models the entered strategy and does not say it is optimal.
Worked example
The editable values above provide a complete worked example. Select Calculate to see the formula result and, where applicable, its payoff or period-by-period breakdown.