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Debt Consolidation

Should You Consolidate Debt Into Your Mortgage? An Honest Answer

, Principal Mortgage AdviserPublished Last reviewed 7 min read

This is the question we are asked most often, and the honest answer is that it depends on things a comparison site cannot see. Consolidation is a genuinely useful tool that has helped many of our clients out of a difficult spot. It is also sold hard by people who earn more when you borrow more. What follows is the framework we actually use with clients across South Lanarkshire and Renfrewshire.

Start with the total cost, not the monthly payment

Almost every debt consolidation conversation starts in the wrong place: "what would my new monthly payment be?" It is the wrong first question because the answer is always encouraging. Stretching any debt over a longer term lowers the monthly figure. That is arithmetic, not a good deal.

The right first question is: what will this cost me in total, and over how long? Work out what you would pay if you carried on with the existing agreements, and compare it with the total interest on the consolidated mortgage over the term you would actually take. Then decide whether the monthly relief is worth the difference.

Four questions worth answering honestly

  • Why did the debt build up? A specific event — a car replacement, a period of illness, reduced hours — is a solvable problem. Balances that have crept upward for three years usually indicate the household budget does not balance, and consolidation alone will not fix that.
  • What would you do with the freed-up money? "Overpay the mortgage" and "breathe again after a hard year" are both good answers. If there is no answer, the saving tends to be absorbed.
  • How secure is your income? Secured debt is far less forgiving than unsecured debt. If your work is unstable, be more cautious about moving debt onto your home.
  • Could you clear it within about three years anyway? If so, consolidation is likely to cost you more overall for a modest short-term gain.

Check these alternatives first

We would rather talk a client out of unnecessary borrowing than arrange it. Before consolidating, these are worth ruling out:

  • A 0% balance transfer — if the debt is mainly credit cards and your credit file is decent, a 0% transfer for 18–24 months can clear it with no interest at all. It needs discipline, but it does not touch your home.
  • A term extension without capital raising — if your mortgage payment is the pressure point, extending the term can free up money without adding secured debt.
  • The Debt Arrangement Scheme — Scotland's statutory scheme freezes interest and charges while you repay through a single Debt Payment Programme, and the frozen interest is written off on completion. It affects your credit file, but for larger debts relative to income it can be substantially better value than consolidating. Free advice is available from your local money advice service or Citizens Advice Scotland.
  • Simply overpaying the highest-rate debt — the avalanche method. Unglamorous, no fees, no risk to your home.

A rough rule of thumb

No rule replaces advice, but as a starting point:

Your situationConsolidation is usually...
Debt under ~£8,000, income stableNot worth it — overpay or use a 0% transfer
£10,000–£30,000, rate ending, good equityWorth costing properly
Debt over ~50% of annual incomeGet free debt advice before borrowing more
Currently in a DAS or trust deedSpeak to your money adviser or trustee first
Income unstable or recently reducedApproach with real caution

If you do go ahead, do these three things

  • Keep the term as short as you can afford. Adding £20,000 over 10 years rather than 25 costs far less in total, and the monthly difference is often smaller than expected.
  • Overpay from day one. Set the payment at close to what you were paying before, if you can. Most lenders allow 10% overpayment a year without penalty.
  • Close the cleared accounts, or put them beyond easy reach. The single biggest cause of consolidation failing is the balances rebuilding on the same cards.

Common questions

This guide is general information, not regulated financial advice, and reflects our understanding of the rules at the date shown. Tax treatment depends on individual circumstances and may change. Your home may be repossessed if you do not keep up repayments on your mortgage. Not all buy to let mortgages are regulated by the Financial Conduct Authority.

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