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Debt consolidation mortgages: how they work, the risks and the alternatives
A debt consolidation mortgage means borrowing against your home, through a remortgage, a further advance or a second charge loan, to pay off other debts such as credit cards and personal loans. It can cut your monthly outgoings, but it turns those debts into debt secured on your home and, spread over a long mortgage term, often costs more in total. Here's how it works, what it really costs and the alternatives to weigh up first.
This is general guidance, not a recommendation. Whether consolidating is right depends entirely on your circumstances.
Please read this first
THINK CAREFULLY BEFORE SECURING OTHER DEBTS AGAINST YOUR HOME. YOUR HOME MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON A MORTGAGE OR ANY OTHER DEBT SECURED ON IT.
If you're already behind on payments or struggling to keep up, speak to a free, impartial debt adviser before you borrow more: MoneyHelper, StepChange, Citizens Advice or National Debtline.
What changes
Secured debt
Cards and loans that weren't tied to your home become part of a debt that is.
Monthly payments
Often lower
Mainly because the debt is spread over many more years, not just a lower rate.
Total cost
Often higher
More years of interest can outweigh a lower rate, as the example below shows.
Struggling already?
Advice first
Free debt charities can talk to creditors for you. Borrowing more isn't always the answer.
What is a debt consolidation mortgage?
It isn't a special type of mortgage. It's any secured borrowing on your home where some or all of the money is used to clear other debts, leaving you with one payment instead of several.
There are three main ways to do it through your home:
- Remortgage with capital raising: you move to a new deal, usually with a new lender, and borrow more than you currently owe. See our remortgage service.
- Further advance: you borrow extra from your current lender, often on a separate rate, while keeping your existing deal.
- Second charge mortgage: a separate loan from a different lender, secured on your home behind your main mortgage. These have been regulated by the FCA as mortgages since March 2016.
Your options compared, secured and unsecured
Using your home isn't the only way to consolidate. Some of the alternatives don't put your home at risk at all.
| Option | Secured on your home? | Possible advantages | Watch out for |
|---|---|---|---|
| Remortgage with capital raising | Yes | Usually the lowest rates; one payment | Early repayment charges on your current deal, fees, longer term, stricter checks |
| Further advance | Yes | Keeps your current deal; no need to switch lender | Current lender's rate may not be competitive; it may decline debt consolidation |
| Second charge mortgage | Yes | Avoids disturbing your main mortgage; more flexible criteria with some lenders | Rates are often higher than a first mortgage; fees; two secured debts to manage |
| Unsecured consolidation loan | No | Home not at risk; fixed end date, often a few years | Higher rates than secured borrowing; depends on your credit score |
| 0% balance transfer card | No | No interest for the promotional period if you meet the terms | Transfer fees; the rate jumps when the offer ends; needs good credit |
| Debt management plan | No | Free from debt charities; one affordable payment agreed with creditors | Recorded on your credit file; creditors don't have to freeze interest; can take years |
Debt management plans are one of several debt solutions, alongside options such as debt relief orders and IVAs. A free debt adviser can explain which, if any, fits your situation.
How a debt consolidation remortgage works
- List every debtBalances, rates, monthly payments, end dates and any early settlement charges.
- Check the whole pictureAn adviser compares the options, including not borrowing more, and the total cost of each.
- Apply and get valuedThe lender checks affordability, your credit file and your home's value.
- Debts are clearedSome lenders pay named creditors directly at completion; the accounts should then be closed or kept at zero.
Worked example: lower payments, higher total cost
This is the trap the FCA wants advisers to check for. Take £15,000 of credit card and loan debt and compare three ways of repaying it.
| £15,000 repaid… | Rate | Term | Monthly payment | Total interest |
|---|---|---|---|---|
| As unsecured debt | 12% | 5 years | £334 | £5,020 |
| Added to the mortgage | 5.75% | 25 years | £94 | £13,310 |
| Added to the mortgage, cleared in 5 years by overpaying | 5.75% | 5 years | £288 | £2,295 |
Total interest on £15,000
The lowest monthly payment comes with the biggest total bill
Adding the debt to the mortgage saves about £240 a month, but over 25 years it costs around £8,290 more in interest than keeping the unsecured debt. If you add it and then overpay to clear that slice within five years, you'd pay less interest than the unsecured route. That only works if your mortgage allows overpayments of that size and you stick to it.
Assumptions: repayment basis, interest calculated monthly, and the rate stays the same for the whole term, which in reality it won't. 12% is an illustrative unsecured rate; many credit cards charge more and some personal loans less. 5.75% is close to recent average fixed rates (Moneyfacts average 5-year fix 5.78% on 15 September 2026). The figures leave out arrangement, valuation and legal fees, any early repayment charges and early settlement costs on existing loans, all of which add to the cost. For current pricing, see our mortgage rates update.
When it may make sense, and when it doesn't
May be worth considering
Stable income, manageable debts, clear plan
You're remortgaging anyway, your debts carry high rates, you can afford to repay the consolidated amount over a short period by overpaying, and you understand the risk of securing it. The spending that caused the debt has stopped.
May be worth considering
A short-term squeeze with a known end
A temporary pressure on your budget, with plenty of equity and a realistic way to reduce the balance later. Even here, compare an unsecured loan or balance transfer first.
Usually not suitable
Already missing payments
If you're in arrears or can't meet essential bills, securing more debt on your home can make things worse. Speak to a free debt adviser, who can negotiate with creditors on your behalf.
Usually not suitable
Debts likely to build up again
If the cards are likely to fill up again, you could end up with a bigger mortgage and new unsecured debt. It's also rarely worth it if the debts are almost paid off, or would clear sooner and cheaper as they are.
Can I consolidate my debt before a mortgage application?
Often, yes, and clearing debt can help. Lenders assess affordability from your income and committed outgoings, so lower monthly credit payments can increase what you're able to borrow. How and when you do it matters, though.
- Avoid new credit just before applying. A new consolidation loan means a hard search and a new account on your file, and lenders may ask why.
- Paying down balances is usually better than moving them. Using savings to clear cards lowers your outgoings without new borrowing, but keep enough for your deposit, fees and a buffer.
- Give it time to show. Changes can take a month or two to appear on your credit file.
- Be upfront. Lenders see your credit history and bank statements. Heavy recent borrowing is best explained, not hidden.
Our guide to why your credit score matters for a mortgage covers this in more detail.
How lenders assess debt consolidation
Lenders treat consolidation more cautiously than borrowing to buy a home or improve one. Criteria vary, but they commonly look at:
| What they check | What it typically means |
|---|---|
| Affordability | Income against outgoings, stress tested at a higher rate |
| Credit history | Missed payments, defaults, CCJs, and how high your balances are |
| Loan to value | Many lenders set a lower maximum LTV for consolidation than for other remortgages |
| Amount and type of debt | Some cap how much can be consolidated or exclude certain debts |
| How debts are repaid | Some require creditors to be paid directly at completion |
| Previous consolidation | A history of repeated consolidation can count against you |
An underwriter will look at your bank statements and credit file closely. See what mortgage underwriters look for.
Early repayment charges on your current mortgage
If you're still in a fixed or discounted deal, leaving early to remortgage usually triggers an early repayment charge, often a percentage of the balance that falls over time. On a large mortgage that can run to thousands of pounds and wipe out any saving.
A further advance or a second charge loan can avoid this because your main mortgage stays in place. Your current lender may also offer a new deal without a charge near the end of your fixed period; see our rate switch service.
Consolidating two mortgages or secured loans into one
Some people searching for "consolidating home loans" already have a main mortgage plus a second charge loan or further advance. Combining them into one remortgage can simplify things and may lower the overall rate, but check exit fees on each loan, the new term and the total cost before switching.
Questions to ask before you consolidate
- How much will I pay in total, including fees, compared with leaving my debts as they are?
- What happens to my home if my income drops or rates rise?
- Could an unsecured loan, balance transfer or repayment plan work instead?
- Are there early repayment or settlement charges on my mortgage or my loans?
- Can I overpay to clear the consolidated amount sooner, and by how much each year?
- Will the credit accounts be closed, and what will stop the balances building up again?
- Have I spoken to a free debt adviser if I'm struggling?
Frequently asked questions
Is it a good idea to consolidate debt into a mortgage?
Sometimes, but not often by default. It can lower monthly payments, yet it secures the debt on your home and can cost much more in total over a long term. It's worth considering only once the alternatives and the total cost have been compared.
Does debt consolidation affect my credit score?
Applying leads to a hard search, and new accounts can have a short-term effect. Clearing balances and keeping up payments can help over time. Missing payments on secured borrowing can have serious consequences.
How much debt can I consolidate into my mortgage?
It depends on your equity, affordability and the lender's rules. Many lenders limit the loan to value or the amount of debt they'll allow for consolidation.
Can I consolidate debt with bad credit?
Some specialist and second charge lenders consider recent credit problems, usually at higher rates. If your credit issues come from ongoing money difficulties, free debt advice should come first.
What is the difference between a further advance and a second charge mortgage?
A further advance is extra borrowing from your existing mortgage lender. A second charge mortgage comes from a different lender and sits behind your main mortgage. Both are secured on your home.
How we help, carefully
FCA rules require advisers to consider the cost of repaying debt over a longer period, whether it's right to secure unsecured debt, and, where you're already struggling, whether dealing with creditors directly would be better. We take that seriously. We'll look at whether consolidating is suitable at all, compare secured options with alternatives, and tell you plainly if we think it isn't right for you.
Quick Mortgages is a whole-of-market broker working with 110+ lenders, with no broker fees. We arrange remortgages and further advances. We don’t usually arrange second charge loans ourselves, but if one looks more suitable for you, we can introduce you to a specialist firm that does. You can read more on practical ways to take back control of debt, or try our mortgage search tool.
Sources
- FCA Handbook, MCOB 4.7A.15R and 4.7A.16E: additional suitability considerations for debt consolidation
- MoneyHelper, debt consolidation loans, secured and unsecured borrowing, and second charge mortgages
- StepChange, remortgaging to pay off debt and debt consolidation guidance
- Citizens Advice and National Debtline, free debt advice services
- Moneyfacts, average 5-year fixed rate 5.78% on 15 September 2026
Correct on 17 September 2026 and may change.
Disclaimer:
This article is for general guidance purposes only and does not constitute legal, financial, or professional advice. Mortgage products and their terms can vary, and it is important to seek advice from a qualified, regulated professional who can assess your individual circumstances. Please ensure you consider your unique needs before making any financial decisions.
While every effort is made to ensure that the information provided on this blog is accurate and up-to-date, we do not guarantee its completeness or accuracy. The mortgage market can change rapidly, and the information on this blog may become outdated. We recommend verifying any information before acting on it and seeking tailored advice.
THINK CAREFULLY BEFORE SECURING OTHER DEBTS AGAINST YOUR HOME. YOUR HOME OR PROPERTY MAY BE REPOSSESSED IF YOU DO NOT KEEP UP REPAYMENTS ON A MORTGAGE OR ANY OTHER DEBT SECURED ON IT.
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