Guide · Debt
How to Pay Off Multiple Debts Faster
Carrying debt across several accounts simultaneously means you are paying interest in multiple places at once. A structured payoff strategy can save thousands in interest and cut years off the time it takes to become debt-free.
The two main strategies: avalanche and snowball
Both strategies share the same first rule: pay at least the minimum on every debt, every month. Missing minimum payments triggers penalty charges and damages your credit score. The strategies differ in how you allocate any money beyond those minimums.
The avalanche method directs all extra money at the highest interest rate debt first. This is the mathematically cheapest route — you reduce the rate at which interest accumulates as quickly as possible.
The snowball method targets the smallest balance first, regardless of rate. Clearing a debt entirely — even a small one — delivers a psychological win that many people find motivating enough to keep them on track.
Avalanche vs snowball on a real four-debt scenario
Consider four debts: a credit card balance of £2,000 at 22.9% APR, a personal loan of £5,000 at 8% APR, a car finance balance of £8,000 at 6% APR, and an overdraft of £500 at 39.9% APR. Total minimum payments are approximately £320 per month; assume a total monthly budget of £520 — £200 of extra firepower.
| Method | Order tackled | Months to debt-free | Total interest paid |
|---|---|---|---|
| Avalanche | Overdraft → Credit card → Personal loan → Car | 38 months | £2,190 |
| Snowball | Overdraft → Credit card → Personal loan → Car | 40 months | £2,460 |
In this example, the order happens to be the same for both methods because the smallest balance (overdraft at £500) also has the highest rate (39.9%). The avalanche saves around £270 in interest and clears the debts two months sooner.
Debt consolidation: when it makes sense
Debt consolidation means taking out a single new loan to pay off multiple existing debts, leaving you with one monthly payment at (ideally) a lower interest rate. If you can qualify for a personal loan at 8–10% APR and use it to clear credit cards charging 22–40%, the interest saving is significant.
The danger is that consolidation without changed behaviour can make things worse. People sometimes clear credit cards via a consolidation loan then run the cards up again, ending up with more total debt than before. Consolidation works best when the lower payment genuinely frees cash to overpay the consolidation loan, and when the root cause of the debt has been addressed.
A secured consolidation loan (against your home) will offer the lowest rate but puts your property at risk if you cannot keep up payments. For most people with consumer debt, an unsecured personal loan is the safer consolidation vehicle.
Making extra payments work harder
Any extra money beyond the minimums should be concentrated entirely on the target debt — not split across all debts. Splitting extra payments reduces the compounding benefit of the avalanche or snowball approach. When a debt is cleared, immediately redirect its full payment (minimum plus extra) to the next target rather than letting it disappear into general spending.
Windfalls — tax refunds, bonuses, gifts — should go directly to the target debt. A £500 lump sum directed at a 39.9% overdraft saves roughly £200 in interest over the following year alone.
Frequently asked questions
What is the avalanche method?
The avalanche method means paying the minimum on all your debts, then directing every extra pound at the debt with the highest interest rate. Once that debt is cleared, you roll the full payment onto the next highest-rate debt. This is the mathematically optimal strategy — it minimises total interest paid and usually results in becoming debt-free faster than any other approach, though it can feel slow if the highest-rate debt also has the largest balance.
What is the snowball method?
The snowball method focuses on the smallest balance first, regardless of interest rate. You pay minimums on all debts and throw extra money at the smallest balance. When it is cleared, you roll that payment onto the next smallest. The psychological benefit is real: clearing a debt entirely gives a motivational boost that helps people stick with their plan. Studies suggest people with motivation problems are more likely to succeed with the snowball, even though it typically costs more in total interest.
Should I consolidate my debts?
Debt consolidation — combining multiple debts into a single loan at a lower interest rate — can reduce monthly payments and total interest if you qualify for a rate meaningfully below your current highest-rate debt. The risks are: consolidation loans typically require a good credit score; secured consolidation loans put your home at risk; and they do not address the spending habits that created the debt. Consolidation works best when paired with a commitment not to accumulate new credit card balances.
How much extra should I pay each month?
Pay as much as you sustainably can without jeopardising your emergency fund or missing essentials. Even £50 extra per month makes a substantial difference on high-interest debt. Use a debt payoff calculator to see the exact impact of different payment amounts — the interest savings from an extra £100 per month on a 39.9% overdraft are dramatic. Avoid the temptation to invest before clearing debts above around 6–8% APR, as investment returns are not guaranteed but interest charges are.