Debtless
The short answer
To switch from snowball to avalanche, save current verified balances, keep the same affordable payment budget, and reorder eligible extra payments by interest rate. You do not need to restart the historical record. Explain why the strategy changed and compare the revised forecast from the current date.
What makes this decision different?
The money already paid is part of your history, not something to reverse. A switch changes future allocation. Check for pending payments so the new plan does not count funds already committed elsewhere. If a small balance is nearly finished, compare that detail explicitly rather than assuming the switch must happen immediately.
How can you apply the idea?
Use these steps to connect the strategy with your actual account terms and available money. Keep any unresolved assumptions clearly labeled.
- Save a current snapshot and identify pending payments.
- Verify rates and choose the new extra-payment target.
- Update future allocations without rewriting completed transactions.
What should the forecast not hide?
Do not compare the revised forecast with an old forecast that used larger balances and claim the whole improvement came from switching. Compare both methods from the same current snapshot to isolate the change.
What should stay unchanged during the switch?
Keep completed payments and historical balances intact. The switch should affect future allocation, not rewrite what happened under the previous method. Retain the same account labels and source dates so the before-and-after comparison remains understandable. If a payment is pending, decide whether it belongs to the old plan’s final cycle before assigning that money elsewhere. Once the new rule begins, check the first statements to confirm the expected allocation. This approach preserves continuity in the record and makes it clear that changing a strategy is a forward-looking decision rather than an erasure of prior effort.
Worked example · illustrative numbers
Illustrative example: compare the payment effect
Assume $100 extra was going to a $300 balance at 10%, while another balance carries 26%. Starting next month, the revised plan sends that $100 to the 26% account and continues both minimums. Under simple monthly rates, the next-month interest benefit on that extra amount differs by about $1.33.
Put this into practice with Debtless
Debtless is a completely free iPhone debt app with snowball, avalanche, and hybrid projections. Use its local ledger to compare plans with your own figures, then make and verify payments directly with your creditors.
Get the free iPhone app ↗Common questions
Does changing methods erase progress?
No. Verified balance reductions remain. The new rule changes where future extra money goes, so preserve past records and revise only future assumptions.
What should stay unchanged during the switch?
Keep completed payments and historical balances intact. The switch should affect future allocation, not rewrite what happened under the previous method.
Sources & further reading
General education for U.S. readers, not individualized financial, legal or tax advice. Examples are hypothetical; lender terms and actual interest calculations can differ. Check your current statements and agreements.
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