home equity loan calculator uk

What is a home equity loan in the UK?

A home equity loan in the UK is usually a secured loan (often called a second charge mortgage) taken against the value you have built up in your property. Equity is the difference between your home’s market value and the amount still owed on your main mortgage.

This type of borrowing can be used for home improvements, debt consolidation, major purchases, or other large expenses. Because the loan is secured against your home, rates may be lower than some unsecured borrowing, but your home is at risk if you do not keep up repayments.

How this calculator works

This home equity loan calculator UK tool gives an estimate using standard repayment math:

• Equity: Property value minus outstanding mortgage.
• Estimated borrowing headroom: Based on your selected maximum combined LTV.
• Monthly repayment: Calculated using amortisation over your chosen term and APR.
• Total repayment and interest: Useful for comparing term lengths and rates.
• Combined LTV: Mortgage + new secured loan, as a percentage of property value.

Input guide: what to enter

1) Property value

Use a realistic estimate based on recent local sales or a recent valuation. Overestimating can make affordability look better than it is.

2) Outstanding mortgage

Use your latest mortgage balance, not the original amount borrowed.

3) Requested loan amount

Enter how much extra you want to borrow as a homeowner loan. Try a few amounts to compare affordability.

4) Interest rate and term

Rate and term drive monthly cost. Lower rate or longer term can reduce monthly payments, but a longer term often increases total interest paid.

5) Maximum combined LTV

This is a planning assumption. Different lenders have different limits based on credit history, income, property type, and whether you are employed or self-employed.

Example scenario

If your property is worth £350,000 and you owe £180,000 on your main mortgage, your equity is about £170,000. If a lender allows 85% combined LTV, the total secured borrowing limit may be around £297,500. That implies potential headroom of roughly £117,500 before affordability checks.

Remember: that does not mean you will be approved for the maximum. UK lenders also run income and expenditure checks, credit checks, and stress testing.

Home equity loan vs remortgage in the UK

• Second charge (home equity loan): Keep existing mortgage, add a new secured loan.
• Remortgage: Replace current mortgage, potentially borrow more at the same time.

A second charge can make sense if your existing mortgage has a low fixed rate or early repayment charges you want to avoid. A remortgage can be better when new first-charge rates are competitive and fees are lower overall.

Key costs to include in planning

• Arrangement or lender fees
• Broker fees (if any)
• Valuation/legal/admin costs
• Early repayment charges
• Total interest over full term

Use this secured loan calculator as a first pass, then compare lender illustrations to see true total borrowing cost.

Tips to improve your application profile

• Check your credit files with major UK credit reference agencies.
• Reduce short-term debt and credit card utilisation.
• Avoid multiple credit applications in a short window.
• Prepare proof of income and outgoings early.
• Borrow only what you need to keep your combined LTV lower.

Frequently asked questions

Is this the same as equity release?

No. Equity release products are usually for older homeowners and work differently. This calculator is for a standard repayment home equity loan / second charge mortgage style estimate.

Can I get a home equity loan with bad credit in the UK?

Possibly, but rate, fees, and maximum LTV may be less favourable. Specialist lenders may consider applications based on broader circumstances.

Are repayments fixed?

Some products are fixed, some variable. This calculator assumes a constant rate for simplicity, so your real payments may differ.