Published 30 September 2026. Positions correct as at this date.

Think carefully before securing other debts against your home. Your home may be repossessed if you do not keep up repayments on your mortgage or any other debt secured on it.

Consolidating debt into a loan secured on your home can reduce what you pay each month, but spreading it over a longer term means the total amount you repay can be considerably more.

The number most people are shown, and the one that decides it

When someone asks about consolidating debt into a second charge, the figure that comes back first is almost always the new monthly payment. It is the easiest number to produce and the most persuasive one to read. If four payments become one, and one is smaller than four, the arithmetic looks settled.

It isn't, because the monthly figure is only half of a pair. The other half is what you repay in total, and the two move in opposite directions: the way a monthly payment gets smaller is usually that the term gets longer, and a longer term is more months of interest.

Neither number is the right one on its own. The monthly figure tells you whether the arrangement is survivable. The total tells you what it costs. A decision made on one without the other is a decision made on half the information.

Why the total can move so much

Unsecured debts are generally short. A card balance you are clearing, a personal loan with three years left, a car agreement with two — these are designed to end. A mortgage or a second charge is designed to run for a long time.

Move a short debt onto a long term and two things happen at once. The monthly cost falls, because the same amount is spread across many more payments. And the total rises, because you are paying interest for many more years. A balance that would have been gone in three years can still be on your home in twenty.

That is the trade, and it is a real trade rather than a trick. Sometimes it is worth making. But it should be made with the total in front of you.

The second thing that changes, which is not about money

Unsecured debt is unsecured. If everything goes wrong, the lender has a claim against you but not against your house.

Consolidating changes that. The debt becomes secured on your home, which is why the warning at the top of this article exists and why it is worded the way it is. People often read that sentence as a formality. It is not — it is a plain description of what the security means.

When it does make sense

It is not a route we argue against. There are circumstances where it is the right answer, and they are usually one of these.

The total genuinely falls. Higher-cost unsecured borrowing consolidated onto a term that is not dramatically longer can cost less overall as well as monthly. That happens; it just has to be demonstrated rather than assumed.

The monthly position was unmanageable. If the current payments cannot be met, a larger total over a longer term can be better than the alternative, and protecting an arrangement you can actually keep up with has a value the arithmetic does not show.

It is part of a plan with an end. Consolidating and then overpaying, so the long term is a safety net rather than a schedule, gets you the lower commitment without all of the extra interest — if the product allows overpayments, which is worth checking before rather than after.

The mistake that undoes it

The most common failure is not the arithmetic. It is that the cards are not closed.

The unsecured balances are cleared, the accounts stay open, and over the next two years they fill up again. Now there is a secured loan on the house and the card debt that the secured loan was taken out to clear. Everyone involved intended otherwise; it happens anyway, because an empty credit card is an available credit card.

If you consolidate, close them. That single step is the difference between a consolidation that worked and one that made things worse.

What to ask for before you agree to anything

  • The total amount repayable, not just the monthly figure.
  • The term, and what the total would be over a shorter one.
  • Whether overpayments are allowed and what they cost.
  • Whether there is an early repayment charge on the new loan.
  • What the same debts would cost if you did nothing and carried on as you are.

That last one is the comparison people skip, and it is the only one that tells you whether consolidating is better than not consolidating.

How we look at it

We model the full cost over the term and show you both numbers side by side — the monthly and the total — against what you are paying now. We also price a second charge against a remortgage and a further advance, because consolidating does not have to mean a second charge and sometimes should not.

If the total does not justify it, we will tell you. That is not a sales position; it is the only useful thing an adviser can say about a decision that puts a debt on your home.

Your home may be repossessed if you do not keep up repayments on your mortgage or any other debt secured on it. This article is general information, not advice — what is right depends on your circumstances. Second charge mortgages secured on your home are regulated by the Financial Conduct Authority. Lawes Financial Limited (FRN 1046161) is an appointed representative of Andrew Charles Consulting Ltd, which is authorised and regulated by the Financial Conduct Authority (FRN 304904).