Negative equity in the UK: mortgage options

Negative equity means that your home’s market value is lower than the mortgage balance still outstanding. It can make changing lender, selling or moving more complicated, but it is distinct from missing payments. If you can afford the agreed repayments and plan to stay put, it may be possible to continue with the mortgage; any decision to sell, move or change deal needs to reflect your own finances and your lender’s criteria.

What is negative equity and how is it calculated?

Equity is the property’s value minus the remaining mortgage balance. Negative equity arises when that result is below zero. Loan-to-value (LTV) is calculated as:

Mortgage balance ÷ property value × 100

For a single mortgage, an LTV of 100% means zero equity before sale costs; an LTV above 100% indicates negative equity. A valuation is an estimate, and the value used by a lender for a lending decision may differ from both an estate agent’s estimate and the price eventually achieved on sale.

MoneyHelper explains negative equity and the options available to borrowers.

A worked negative-equity example

Suppose a property was bought for £300,000 with an 85% LTV mortgage of £255,000. If the outstanding balance later falls to £245,000 while the property is still valued at £300,000, the LTV is 81.7% and there is £55,000 of positive equity.

If the same £245,000 balance is measured against a value of £255,000, the LTV is 96.1% and there is still £10,000 of positive equity before costs. If the property value is instead £230,000, the borrower has £15,000 of negative equity and an LTV of about 106.5%.

On a repayment mortgage, the balance generally reduces as capital is repaid, although each instalment can also include interest. On an interest-only mortgage, the capital balance will not normally reduce through the regular interest payments alone.

Remortgaging, product transfers and moving home

Negative equity can make a remortgage with a new lender difficult because the new lender will assess affordability and its own LTV criteria. There is no universal LTV threshold or guaranteed rate. A lower LTV may widen the range of available products, but it does not guarantee that a particular deal is suitable or cheaper overall.

If you are up to date with payments and are not increasing borrowing, your existing lender may offer a product transfer without an affordability assessment in some circumstances. This is lender- and product-specific, so ask what is available rather than assuming it will be offered. The FCA’s mortgage support guidance explains the distinction between switching with an existing lender and moving to a different one.

Porting a mortgage or moving home also needs your lender’s assessment. It is not an automatic transfer of a debt, and approval is not guaranteed. Some lenders publish conditional routes for existing customers in negative equity; for example, Nationwide’s information is specifically for eligible existing members. A mortgage adviser can help you explore the options, including a remortgage discussion, but cannot replace early contact with your lender if payments are at risk.

Selling a home with negative equity

Before marketing a property, ask your lender for a redemption figure and discuss the proposed sale. The amount needed at completion can include the mortgage balance, interest and applicable charges. The actual sale proceeds can also be reduced by selling costs.

If the net proceeds will not clear the redemption figure, there may be a mortgage shortfall. You should agree the shortfall and the arrangements for the lender to release its security before committing to a sale. You may need savings or a repayment arrangement, but neither is guaranteed. A remaining debt is not automatically cancelled because a home has been sold or repossessed. The Financial Ombudsman Service explains mortgage shortfalls and how interest and relevant costs can affect them.

Why a property’s value can change

Property values can change for many reasons. At a broad level, borrowing costs, credit availability, incomes, expectations and the balance of housing demand and supply can all matter. Individual properties can also be affected by their condition, type and local market. These influences do not provide a reliable forecast for a particular home or a timetable for leaving negative equity. The Bank of England’s housing-market explainer gives broader context on these influences.

If you are worried about repayments

Negative equity alone does not automatically trigger repossession. Arrears mean missed mortgage payments; negative equity concerns the relationship between value and the mortgage balance. Keep paying as agreed where you can, and contact your lender early if you are worried about affordability. It may be able to discuss available support, though any change can affect the total cost of the mortgage or your credit file.

Free, impartial guidance is available from MoneyHelper and the GOV.UK repossession advice page. The latter sets out that procedures differ across the UK, so obtain advice appropriate to where you live.

Summary

Negative equity can limit choices, but it does not decide the right next step on its own. Check the current mortgage balance and a realistic valuation, obtain a redemption figure before considering a sale, and ask your lender what options apply to your circumstances. If payments are becoming difficult, seek help early.