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Second Charge Mortgage Calculator 2026

Find out how much you could borrow on a second charge mortgage. Instant results: available equity, combined LTV, and indicative monthly repayment - no personal details required.

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How much could you borrow?

You could borrow up to
£190,000
At 85% combined LTV
Total equity
£250,000
Combined LTV
50.0%
Monthly payment
£594
Capital repayment
Total interest
£21,221
Total amount repaid
£71,221

These are illustrative figures only and not a formal offer. Actual rates and amounts depend on your circumstances, property and chosen lender. Your home may be repossessed if you do not keep up repayments on your mortgage.

Second Charge Mortgage Rates - October 2026

Indicative second charge mortgage rates by LTV (combined first + second charge), October 2026
Combined LTVTypical Rate RangeTypical Max Loan
Up to 65%5.5–6.5%£500,000
65–75%6.0–7.5%£500,000
75–80%7.0–8.5%£350,000
80–85%7.5–9.0%£250,000
85–90%8.5–10%+£150,000

When a Second Charge Makes Sense

A second charge mortgage is particularly well-suited when you want to raise capital but are locked into your current mortgage with significant early repayment charges (ERCs). Rather than pay the ERC to remortgage, a second charge allows you to borrow the additional funds without touching your existing mortgage deal.

Common uses include home improvements, debt consolidation, business investment, helping a child with a house deposit, or covering a tax bill. The loan is secured against your property, so lenders can advance larger sums at lower rates than unsecured alternatives such as personal loans or credit cards.

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The figures on this page are indicative. Send us your scenario and we will come back the same working day with options from our panel of 130+ lenders.

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FAQs

Frequently asked questions

What is a second charge mortgage?

A secured loan taken out against a property that already has a mortgage. It sits behind the first mortgage, which is why it is called a "second charge". Your property is used as security, so you can borrow more and at lower rates than unsecured debt - but your home is at risk if you cannot keep up both sets of repayments.

How much can I borrow?

Most lenders advance up to 85–90% combined LTV. On a £400,000 property with a £200,000 first mortgage, that means up to approximately £140,000–£160,000 available as a second charge. Your income and credit profile also influence the maximum.

What are current second charge rates?

As of October 2026, rates typically range from 5.5% to 9%+ depending on LTV, credit history, term, and lender. Lower combined LTV and strong credit history attract the most competitive rates.

Is a second charge better than remortgaging?

If your existing mortgage has significant early repayment charges, a second charge is usually more cost-effective. It also completes faster - typically 3–6 weeks versus 6–12 weeks for a full remortgage. If your fixed rate is ending soon, a remortgage might offer a lower blended rate.

Does it affect my credit score?

The application will show as a hard credit search. Once in place, the second charge appears on your credit file. Keeping up repayments helps your score; missing them damages it, and your home is at risk of repossession.

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