Debt-Free Date Calculator

The debt-free calculator projects when you will pay off all your debts based on your current balances, interest rates and monthly payments. It supports two common repayment strategies: the avalanche method, which targets the highest interest rate first, and the snowball method, which targets the smallest balance first. Both assume a single monthly budget covering the minimum payments on everything plus whatever is left over. Enter each debt with its balance, APR and minimum payment, then your total monthly budget, and the calculator runs both strategies month by month, adding interest at each debt's effective monthly rate, (1 + APR)^(1/12) − 1. It shows the months to debt-free, the total interest and the order in which the debts clear for each strategy side by side.

With the avalanche method, you direct all spare cash to the debt with the highest interest rate while making minimum payments on the rest. Once that debt is cleared, you roll its payment into the next highest rate. This approach minimises total interest paid. It matters most when the rates differ sharply, for instance an 8% loan alongside a 39% overdraft and a 25% card, where the ordering is worth real money.

The snowball method targets the smallest balance first for quick psychological wins. It usually costs more in interest, but a 2012 study by David Gal and Blakeley McShane in the Journal of Marketing Research found that people who paid off individual debts in full were more likely to go on to clear their debts altogether. Where the APRs across your debts are broadly similar, snowball is the sensible default, because the mathematical penalty is small and the motivation is not. Take three debts on a £500/month budget: £4,000 at 21% with a £100/month minimum, £6,000 at 8% with £150/month, and £3,000 at 5% with £120/month. Avalanche clears them in 30 months for £1,659.46 of interest. Snowball also takes 30 months but costs £1,960.96, about £300 more, because it clears the 5% car finance first and leaves the 21% card running until month 24.

Order of priority matters before either method starts. Build a small starter emergency fund of £500-£1,000 first, because that is what stops a car breakdown or a dead boiler turning into new debt. Then attack the balances hard. Once the high-interest debt above 10% APR is gone, extend the fund to cover 3-6 months. Saving into a 1% account while paying 39% overdraft interest loses money every month, so the two do not sit comfortably together. The one exception is an employer pension match, which is free money and should always be claimed.

Small extra payments do more than their size suggests. A debt snowflake is any minor windfall, £5-£20 at a time from cashback, rebates, eBay sales or side hustle income, thrown straight at a balance. A £20 snowflake saves the principal and every future pound of interest that £20 would have generated. Apps such as Plum, Chip and Snoop can move round-ups across automatically, and combined with the snowball method, snowflakes can cut payoff timelines by 20-30%. Splitting a monthly payment into two bi-weekly halves works on the same principle, since 26 half-payments a year amount to 13 monthly payments instead of 12.

If the numbers do not work at all, formal options exist. A Debt Management Plan is an informal arrangement that negotiates reduced payments, frozen interest and a clear payoff date within 3-7 years. Creditors can technically refuse it, and it stays on your credit file for 6 years. It can be set up free through StepChange (0800 138 1111) or PayPlan, so fee-charging firms are not worth paying. An Individual Voluntary Arrangement is the legal alternative to bankruptcy, with an agreed payment for 5-6 years after which the remainder is written off, and again 6 years on file. An IVA has to be set up by a licensed insolvency practitioner and carries fees taken from your payments, typically a set-up (nominee) fee and a supervisor's fee of around 15% of each payment. In England and Wales a Debt Relief Order has been free since April 2024 for people with total debts under £50,000, spare income under £75 a month, assets under £2,000 and any vehicle worth under £4,000. Breathing Space gives 60 days of protection from most creditor action, with interest and charges frozen, or for as long as mental health crisis treatment lasts plus 30 days. National Debtline and Citizens Advice give free advice on all of these.