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Debt Consolidation Guide

When to combine debts, how it works, and the traps to avoid.

Written by Shaun da Silva — Finance ConsultantLast updated 11 September 2026Editorial Policy Report an error

About the author: Shaun da Silva is a Finance Consultant with over 20 years’ experience in the financial sector. He holds a BTech in Information Systems and writes and maintains the calculators and guides published on SmartMoneyTools. View author profile.

For people with several high-interest debts who are wondering whether a single consolidation loan would help. Consolidation means taking one new loan to pay off several existing ones, aiming for a lower overall rate, one monthly payment and a clear end date. Done well it saves money and simplifies life; done badly it costs more and puts your home at risk. This guide covers the decision; for the payoff methods to apply afterwards, see the debt repayment guide.

When consolidation actually helps

  • You can secure a new loan at a lower APR than the average of your existing debts.
  • You keep the new term short — not stretching 3 years of card debt into a 10-year loan.
  • You close or freeze the old credit cards the moment they are paid off.

If all three hold, consolidation can meaningfully reduce both the monthly payment and the total interest.

Worked example: £15,000 across three high-rate debts

Before:

  • Card 1: £5,000 at 20%
  • Card 2: £5,000 at 24%
  • Overdraft: £5,000 at 39%
  • Combined minimums: ≈ £450/month, mostly interest — balances barely move.

After — a £15,000 personal loan at 8% over 4 years:

  • New monthly payment: ≈ £366.
  • Payment drops by ≈ £84/month, the debt has a firm 4-year end date, and thousands in interest are saved.

The two traps that undo consolidation

  • Re-borrowing. The primary risk is behavioural. Consolidation frees up your card limits; if you start spending on them again, you end up with the new loan and fresh card balances — double the debt. Close or freeze the cards the day you consolidate.
  • Securing unsecured debt against your home. Some consolidation products are secured homeowner loans with low rates because your property is collateral. Default on an unsecured personal loan and your credit is damaged; default on a secured loan and your home can be repossessed. Avoid tying consumer debt to your property.

When consolidation is the wrong answer

If your credit is already damaged, you will not qualify for a rate low enough to help — and a high-rate consolidation loan can cost more than leaving the debts where they are. In that situation a formal Debt Management Plan through a free charity like StepChange is usually the safer route. Consolidation is also unnecessary if you can clear the existing debts within a year through the Avalanche method.

After consolidating: keep the plan

A consolidation loan removes the high interest, not the debt itself. Apply a structured payoff method to the new loan — overpay where you can, and treat the freed-up monthly cash as payoff fuel rather than spending money. Model the alternative of paying the debts down directly with the Debt Snowball Calculator.

Limitations

The rates in the example are illustrative; actual APRs depend on your credit history and market conditions. Early repayment charges may apply to the new loan. This is educational, not advice; for serious debt problems, a free debt adviser is the right first step.

Written and maintained by Shaun da Silva, Finance Consultant. Learn how we ensure accuracy and quality in our Editorial Policy.