Berks & Bucks Finance
How Much Can I Borrow When Remortgaging
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Written by Harvey Sandhu, specialist mortgage adviser with over 40 years of experience. Berks & Bucks Finance . Updated 2026.
How much can I borrow when remortgaging?
How much you can borrow when remortgaging usually falls between 4.5 and 6 times your gross annual income — but the real figure depends on your equity, your existing debts, and how each lender assesses your position. There is no single answer, and that is exactly why it matters: two people with identical mortgages can get very different offers.
Who this guide is for
This guide is for homeowners who want to know how much they can borrow when remortgaging — whether you are staying put or releasing equity. Whether you are:
- Remortgaging to release equity and wondering how much you can take
- Trying to work out your maximum borrowing before you apply
- Confused why online calculators and lender offers never seem to match
- Self-employed or with complex income, and unsure how lenders will assess you
- Comparing a further advance against a full remortgage
The amount you can borrow when remortgaging depends on four factors: your income, your existing mortgage balance, your property value, and your existing debts — and how the lender assesses your overall financial position.
Most lenders use income multiples of 4.5 to 6 times your gross annual salary as a starting point — but the actual figure varies significantly between lenders and cases.
There is no single answer, which is why it matters. Different lenders offer vastly different amounts for the same person, property, and time, each assessing income, property value, and finances differently. Two with identical mortgage balances can get very different offers.
We can review your position and tell you what lenders are likely to allow.
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What You’ll Find on This Page
How do lenders calculate how much you can borrow when remortgaging?
You might hear that your maximum loan amount is about 5 or 6 times your income, a simple method used by smaller lenders.
However, larger lenders don’t rely on this approach. Instead, they use their own affordability calculators that consider your entire financial situation, so the same salary could yield different mortgage amounts depending on the lender.
Typical income multiples in 2026
As a general guide for 2026, the typical range is:
- 4.5 times income — the standard for most borrowers
- 5 to 7 times income — available to applicants with strong finances and low existing debts
Income multiple example
Gross annual income: £60,000
At 4.5x income: maximum loan = £270,000
At 5.5x income: maximum loan = £330,000
The same income produces a £60,000 difference depending on which lender is used. This is why lender selection matters as much as the rate.
What do lender affordability calculators actually assess?
Lender calculators consider your income and expenses, like debts and living costs. Some use office of national statistics ( ONS ) family spending data to set realistic baseline living costs based on household size.
Many online calculators do not, so their figures often differ from what lenders offer.
What lenders include in an affordability check
Here is what those Lender calculators actually take into account:
- Employed or self-employed income — including overtime, bonuses, and commission where provable
- Existing loan and credit card commitments
- Car finance and other regular debt repayments
- Household bills, childcare, and school fees
- Number of dependants
- Age and proximity to retirement
An online calculator might suggest £250,000 on a £55,000 salary. However, after factoring in car finance, credit cards, and existing commitments, the actual offer might be £190,000. Getting a proper review before making any assumptions helps avoid costly surprises.
Good news for 2026!
The strict stress test rule that previously required lenders to check affordability at a rate 3% above the mortgage rate has been removed. This gives lenders more flexibility — and means some people who previously could not borrow enough may now qualify.
How does loan-to-value affect how much I can borrow when remortgaging?
Loan-to-value (LTV) is the percentage of your property’s value borrowed.
Lower LTV means better rates and more lender options, while higher LTV leads to higher rates and limited choices.
LTV example
Property value: £400,000
Mortgage balance: £240,000
LTV = 60% Equity = 40% (£160,000)
As a guide for 2026:
- Standard remortgages — most lenders will go up to 85–95% LTV
- Remortgages releasing equity — most lenders prefer to cap at 75–90% LTV
- Above 85% LTV — rates start getting higher
Even if you have significant equity, lenders will not allow you to borrow against all of it. The LTV cap defines how much of that equity is accessible.
How does the property valuation affect how much i can borrow when remortgaging?
Every lender will assess the current value of your property before approving the mortgage. This is not based on what you paid for it or what you think it is worth — it is the lender’s own assessment, and it directly determines the loan-to-value (LTV).
The valuation may be carried out using online property data, a desktop assessment without a physical visit, or a full physical inspection by a surveyor. The approach depends on the LTV, the property type, and the lender’s criteria.
If the valuation comes in lower than expected, the LTV increases, which can reduce the amount available or push you into a higher rate band. So it is worth having a realistic view of your property’s current market value before applying.
What is the loan-to-value? How does the calculation work in practice?
Here is an example of how much equity could be released before affordability limits it.
Equity sets the ceiling; affordability and lender criteria determine the actual borrowing within that ceiling.
Equity release example
Property value: £450,000
Current mortgage balance: £250,000
Available equity: £200,000
If borrowing to 75% LTV: £450,000 × 75% = £337,500 maximum loan
Potential additional borrowing: £337,500 − £250,000 = £87,500
If borrowing to 80% LTV: £450,000 × 80% = £360,000 maximum loan
Potential additional borrowing: £360,000 − £250,000 = £110,000
Final amount still depends on income, affordability, and lender criteria.
What does releasing equity actually cost over time?
Releasing equity increases your outstanding mortgage balance, your monthly payments, and the total interest you pay over the term.
The monthly payment is not the real cost — the total repayment over the full term is.
Total interest cost example
Equity released: £50,000
Interest rate: 4.5% | Remaining term: 20 years
Estimated total interest on the released portion: approx. £30,000
The £50,000 released effectively costs £80,000 over the term. Overpaying when possible can significantly reduce this.
Releasing equity isn’t wrong if for the right reasons, like home improvements that increase value or consolidating costly short-term debt. Make decisions considering the full picture, not just the monthly payment.
What do people use a remortgage for?
Homeowners tend to borrow more when remortgaging for various reasons. The reason for the remortgage is just as important to the lender as the amount borrowed. Certain purposes are considered more straightforward than others.
The most common reasons:
- Home improvements and renovations
- Building an extension
- Consolidating existing debts
- Buying another property — buy-to-let, family purchase, or holiday home
- Supporting children onto the property ladder
- School fees or other significant planned expenditure
- Transfer of Equity
Debt consolidation and purchasing another property both attract closer scrutiny and are treated differently by lenders. So, the reason for the extra borrowing helps to decide which lender to choose.
If your aim is home extension, see: Remortgage to extend.
Is your goal to buy another property, see: Can I remortgage my house to buy another?
Considering debt consolidation, see: Can I remortgage to pay off debt?
Can I borrow more without switching to a new lender?
Yes. You can borrow more from your current lender through a further advance, keeping your existing mortgage while adding extra funds. This means holding two separate mortgages with the same lender.
A further advance can be simpler and quicker than a full remortgage. But there are trade-offs:
- The rate on the further advance may differ from your existing deal
- Affordability checks still apply
- The amount available may be more limited than switching to a new lender
- You do not get access to the rates and deals available elsewhere in the market
It is worth comparing a further advance with a full remortgage before committing to either option. The right choice depends on your current rate, any early repayment charge, and how much you need.
If you’re reading this thinking, “I still can’t tell if switching is worth it”, that’s normal.
Most homeowners feel more confident when they take the time to carefully review all the details — such as fees, timing, and risks — before submitting any application. It makes the process feel much more manageable and clear.
What limits how much you can borrow — or stops it altogether?
Some factors reduce the amount a lender will offer. Others can stop an application. Knowing the difference before you apply saves time, money, and unnecessary marks on your credit file.
Factors that reduce the amount available
- High existing debts — credit cards, loans, and car finance all reduce what lenders will offer
- Reduced income — lenders want to see stable, provable earnings
- Recent changes in employment — job changes or moving into self-employment need careful handling
- Lower-than-expected property valuation — increases LTV and reduces available equity
- Age and retirement proximity — lenders check whether the mortgage term extends beyond expected working age. Accepted retirement age 70
- High household outgoings — significant regular expenses reduce what lenders will lend against
Factors that can stop an application altogether
- Affordability does not meet the lender’s criteria after the full assessment
- loan-to-value exceeds their maximum for the purpose
- purpose of borrowing falls outside their lending policy
- property type or condition raises concerns
- Credit history does not meet their threshold
Understanding this before any application is made avoids unnecessary credit searches and time spent exploring the wrong lender. We review your position before any formal application is submitted — so you know where you stand before any commitment is made.
If your credit profile has changed, see: Can I remortgage with bad credit?
Ready to find out what you could actually borrow?
The most reliable way to understand your borrowing is to assess your income, commitments, property value, and credit profile against lender criteria.
Online calculators offer a rough estimate, but the real number may differ once all factors are considered. We can tell you what’s realistically available before applying.
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Frequently Asked Questions About How Much You Can Borrow When Remortgaging
How much can I borrow when remortgaging?
The amount depends on your income, existing debts, property value, and the lender’s own criteria. Most lenders start with income multiples of 4.5 to 4.75 times gross annual salary, with some offering up to 5.5 or 6 times for stronger profiles. The actual figure varies significantly between lenders for the same applicant.
Can I borrow more than my current mortgage balance?
Yes. Many homeowners remortgage specifically to release equity — switching to a new lender with a larger mortgage and taking the difference as cash. The amount available depends on your LTV position, income, and what the new lender will approve under current affordability rules.
How does loan-to-value affect how much I can borrow?
LTV is the percentage of the property value being borrowed. Lower LTV means more equity, better rates, and more options. For standard remortgages most lenders go up to 85–90% LTV. For equity release many cap at 75–90% LTV. The higher the LTV, the fewer lenders are available and the higher the rate is likely to be.
Do online mortgage calculators give an accurate figure?
No they are not reliable. Online calculators use a simple income multiple and do not account for your specific debts, spending, or lender stress testing. After accounting for real commitments, the actual offer is often significantly lower than the calculator suggests. Always get a proper review before making decisions based on a calculator figure.
Does my age affect how much I can borrow?
Yes. Lenders check whether the mortgage term extends beyond your expected working age or retirement. A borrower in their late 50s remortgaging over 20 years may face more scrutiny than someone in their 40s. Some lenders have maximum age limits at the end of the mortgage term.
Can I borrow more if my property has gone up in value?
Potentially yes. If your property’s value has risen since your original mortgage, your LTV has improved. A lower LTV can provide more equity, better rates, and more lender options. However, final amount depends on affordability — property value alone isn’t enough.
What is the difference between a remortgage and a further advance?
A remortgage involves switching to a new lender for a larger loan, opening access to the entire market. A further advance is borrowing extra from your current lender without disturbing the existing mortgage, which can be quicker but is limited by the lender’s offer.
Does the reason for borrowing more affect how much a lender will offer?
Lenders want to know why you’re borrowing more, with some reasons scrutinized more. Home improvements are straightforward, but debt consolidation or buying property can impact available amounts and lender consideration.
Return to the Remortgage Guide
For a full overview of remortgaging options and other common situations, see the main Remortgage Hub.
All mortgage products are subject to lender criteria, status, and affordability. Rates and product availability are subject to change. This page is for information only and does not constitute mortgage advice. Berks & Bucks Finance is FCA-regulated. Your home may be repossessed if you do not keep up repayments on your mortgage.