UK Debt Snowball Calculator

Plan your debt payoff using the snowball or avalanche strategy and see exactly when you will be debt-free.

Time to Debt-Free
0 months
using snowball strategy
Total Interest Paid
£0.00
Interest Saved vs Min Only
£0.00
Total Debt
£0.00
Enter your debts and budget to see your payoff plan.
Payoff Order
    Debt Payoff Timeline

    Debt Snowball vs Avalanche · Which Saves More?

    Example: 3 debts totalling £8,000 · £300/month total payment budget · 20% APR

    Strategy Order Paid Total Interest Months to Debt-Free Best For
    SnowballSmallest first£2,84732 monthsMotivation & quick wins
    AvalancheHighest rate first£2,61432 monthsSaving the most money
    Either methodConsistent paymentsLess than min onlyMuch fasterGetting out of debt

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    Debt Snowball FAQs

    Debt snowball vs avalanche · which is better?
    The avalanche method saves more money in interest by targeting the highest-rate debt first. The snowball method pays off individual debts faster, providing motivational wins that help you stay on track. Both methods clear debt in the same total time if your payment budget stays constant · the difference is only in total interest paid.
    How does the debt snowball work in the UK?
    List your debts from smallest to largest balance. Pay minimum payments on all of them, then direct every extra pound to the smallest debt. Once it is cleared, roll the full payment from that debt onto the next smallest. Repeat until all debts are gone. The growing payment amount is the "snowball" that accelerates over time.
    What is the fastest way to pay off debt in the UK?
    The fastest way is to maximise your monthly payment and use the avalanche method (highest rate first). Also consider: consolidating high-rate debts into a lower-rate personal loan; using 0% balance transfer cards to pause credit card interest; and cutting discretionary spending to free up more cash for debt repayment.
    Should I save or pay off debt first?
    Generally, pay off high-interest debt first. If your debt costs 20% APR and savings earn 5%, you save a net 15% by paying the debt. Keep a small emergency fund (£500–£1,000) first to avoid going back into debt for unexpected costs. Once high-rate debt is cleared, redirect payments to building savings and pension contributions.

    For informational purposes only · Not financial advice