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DebtThe snowball method pays minimums on everything and throws every extra pound at the SMALLEST balance first. Quick wins build momentum. This calculator shows your total payoff time and interest for any mix of up to five debts.
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Snowball targets smallest balance first (psychological wins). Avalanche targets highest APR first (mathematically optimal). Snowball pays slightly more interest total but has a better dropout-prevention record in behavioural studies.
If the APRs across your debts are similar, the difference is negligible. If one debt is at 29% APR and another at 6%, the avalanche saves significantly.
Each month: pay the FCA minimum (1% of balance plus interest, floor £5) on every debt. Any leftover from your budget goes to the smallest-balance debt. Once that is cleared, its payment is added to the next-smallest. Repeat until all clear.
This signals you need to speak to a free debt adviser. Try StepChange or Citizens Advice before taking any further credit.
Yes, mathematically. But if a 0% deal ends soon, factor in the rate it reverts to.
Illustrative calculation. Not personalised financial advice. Rates, bands and allowances for the 2026/27 UK tax year, verified against gov.uk at time of review. For regulated advice consult an FCA-authorised adviser.