How much can you remortgage for?

How much you can remortgage for is set by three things: your equity (the property's value minus what you owe), the lender's maximum loan-to-value, and whether the new borrowing is affordable on your income. To simply replace your existing mortgage, almost everyone qualifies; to borrow more, the extra has to fit within the loan-to-value cap and pass affordability.

What decides how much you can remortgage for?

Answer first: three things set the figure — your equity, the lender’s maximum loan-to-value, and affordability on your income. To simply replace your existing mortgage, nearly everyone qualifies. The limits only start to matter when you want to borrow more than you currently owe.

It helps to separate the two scenarios from the outset. Replacing your mortgage means borrowing roughly your current outstanding balance on a new deal — the usual reason people remortgage, to escape an expiring rate. Raising money means borrowing more than you owe and taking the difference as cash. The first is straightforward; the second is where equity, loan-to-value and affordability come into play. Both run through the remortgage hub.

Limit one: how much equity do you have?

Your equity is the part of the property you own outright — its current market value minus your outstanding mortgage. It’s the absolute ceiling on what you can borrow, because you can only borrow against value you actually hold.

Worked through simply: if your home is worth £400,000 and you owe £220,000, you have £180,000 of equity. That doesn’t mean you can release all £180,000 — the lender’s loan-to-value cap (below) sits inside it — but it frames what’s possible. Two things grow your equity over time: paying down the mortgage, and any rise in the property’s value. Both reduce your loan-to-value, which is the next limit.

Limit two: the lender’s loan-to-value cap

Answer first: lenders limit how much of your property’s value they’ll lend against, expressed as a loan-to-value (LTV) percentage. Your new total loan — including any cash you release — has to sit within that cap. The lower your LTV, the more you can borrow and the better the rates you’ll be offered.

Loan-to-value is the single most influential number in remortgaging. It works in two directions at once:

• Headroom. A lower LTV leaves more room to borrow more if you want to.
• Pricing. Lenders reserve their sharpest rates for lower LTV bands, because a bigger equity cushion is lower risk for them. Crossing below a band threshold — for example as a rising valuation lifts your equity — can unlock a noticeably better rate.

This is why a remortgage often looks more generous than your original purchase mortgage did: if your home has gained value and you’ve been paying down the balance, your LTV may be much lower than when you bought, opening both more borrowing and better deals.

Limit three: affordability and your income

Answer first: even with ample equity, the lender must be satisfied you can comfortably afford the payments. Borrowing is generally capped at a multiple of your income and stress-tested against your other commitments — so your income, not just your equity, sets the practical limit.

Affordability is assessed much as it is for a purchase. The lender looks at your income, your regular commitments (other loans, credit, dependants) and applies an income multiple, then checks the payments remain affordable if rates were higher. If you’re releasing equity, the larger loan is what gets tested, so raising money depends on the bigger payment still fitting your income.

How do you borrow more than you owe?

This is capital raising, and it’s done by remortgaging for a larger amount than your current balance and drawing the difference as cash. As long as the new total stays within the LTV cap and passes affordability, common and accepted purposes include:

• Home improvements — often work that adds value back to the property. See remortgaging for home improvements.
• Investing in your business — directors sometimes release equity for working capital, subject to affordability on the larger loan.
• Debt consolidation — folding higher-interest debt into one lower-rate payment, weighed carefully because it secures that debt against your home. See debt consolidation remortgage.

The mechanics are covered in full in remortgaging to release equity, and if you only need a modest top-up it’s worth comparing a further advance with your current lender too. A straight remortgage of your own home generally attracts no stamp duty, which is one reason it’s an efficient way to raise capital — see remortgage costs and fees for the fees that do apply.

How much can a contractor remortgage for?

Answer first: the same three limits apply, but the figure hinges on a lender reading your income the right way. The wrong lender averages a contractor’s income down and shrinks what you can borrow; the right one annualises your gross contract rate and lets you borrow on your real earning power.

For day-rate contractors, specialist lenders typically annualise the rate — day rate × days per week × 46 weeks — to produce an income figure, then apply an income multiple. Limited company directors can often borrow on salary and dividends, and with some lenders on retained profit left in the company too. CIS subcontractors can frequently be assessed on gross posted income before the deduction.

The practical effect is large: the same person can be offered very different amounts depending on which lender’s affordability model they’re placed with. This is the core of remortgaging when self-employed, and why a whole-of-market search matters more for contractors than for employed borrowers. Directors should also see the limited company directors page for how the income is built up.

Put real numbers on it

Before you commit to a target figure, model the monthly cost. Enter a balance — your current one, or a higher one if you’re raising money — into the remortgage calculator to see the payment, and compare it against your current deal. That tells you whether the amount you can borrow is also an amount you want to borrow once you see the monthly commitment.

A common mistake: confusing equity with borrowing power

Answer first: having lots of equity doesn’t mean you can borrow lots more — affordability still caps the figure. Plenty of homeowners are equity-rich but find the amount they can raise is limited by income, not by the value sitting in the property.

This trips people up regularly. Someone with a £500,000 home and a £150,000 mortgage has £350,000 of equity and assumes a large capital raise is automatic. But the lender still applies its loan-to-value cap to the new total and tests whether the bigger payment is affordable on their income. If the income only supports a modest increase, the equity is largely academic for borrowing purposes — it’s real wealth, but it isn’t borrowing power on its own. The two limits work together, and the lower one wins. The reverse situation also exists: someone with a strong income but limited equity is capped by the loan-to-value ceiling rather than affordability. Knowing which limit is binding for you is the first thing a broker works out, because it determines whether the conversation is about income evidence or about the property’s value.

The bottom line

How much you can remortgage for is the lowest of three ceilings: your equity, the lender’s loan-to-value cap, and what’s affordable on your income. Replacing your existing mortgage is usually easy; borrowing more depends on equity and affordability lining up. For contractors, the figure swings heavily on choosing a lender that reads your income correctly — which is exactly where advice earns its place. To get a tailored number for your property and income, speak to an adviser. For independent background on remortgaging, MoneyHelper is a good neutral starting point.