Debt consolidation loan calculator

Updated 7 November 2026 · ClearCost UK · 4 min read

As an example, £12,000 of debts costing £360 a month in minimum payments would take 55 months and cost £7,767 in interest. A single £12,000 consolidation loan at 9.9% over 4 years would cost £301.35 a month and £2,465 in interest.
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Example: three debts into one loan

Consolidation replaces several debts with one loan, ideally at a lower rate and with one payment. It saves money only if the new rate is lower or the term is not much longer, and if you do not run the old accounts up again.

Before consolidating

DebtBalanceAPRMonthly minimum
Credit card A£5,00024.9%£150
Credit card B£3,00029.9%£90
Loan£4,00014.9%£120
Total£12,000£360

The comparison

Paying the three debts with the minimums, using the money from cleared debts to speed up the rest, takes 55 months and £7,767 of interest. Consolidating into one 4-year loan at 9.9% costs £2,465 of interest. That is a saving of £5,302 in this example, but a longer loan or a higher rate could erase it.

Separate debtsConsolidation loan
Monthly payment£360£301.35
Time to clear55 months48 months
Total interest£7,767£2,465

Example only. Enter your own numbers in the calculators.

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Risks to watch

  • A secured consolidation loan puts your home or car at risk if you cannot pay.
  • A longer term can raise the total interest even with a lower rate.
  • Fees and early settlement charges on the old debts.
  • Running up the cleared cards again, which leaves you with both debts.
  • Check your credit file and use an eligibility checker before you apply.

Free help with debt

If you are struggling, free impartial help is available from StepChange, PayPlan, Citizens Advice and MoneyHelper. Be careful of firms that charge fees to arrange debt solutions.

Sources and further reading

Questions people ask

Does debt consolidation hurt my credit score?
A new application is a credit check, which can lower your score slightly for a short time. Over time, lower balances and on-time payments can help it.
Is debt consolidation a good idea?
It can be when the new loan has a lower rate and a similar term, and you stop adding new debt. Compare the total cost, not only the monthly payment.

Results are estimates for information only, not financial advice. Read the full disclaimer.

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