Is UK Mortgage Calculators mortgage advice?

UK Mortgage Calculators provides general information, calculators and adviser callback options. The website content is not personalised mortgage advice.

Are calculator results guaranteed?

No. Calculator outputs are estimates only. Actual mortgage availability, rates, costs and repayments depend on lender criteria and your circumstances.

Can this page guarantee a mortgage approval?

No. Mortgage approval is never guaranteed and depends on lender assessment, affordability, credit history, property details and other checks.

Mortgage Porting Calculator UK

Name: Mortgage Porting Calculator UK
Brand: UK Mortgage Calculators
Availability: InStock

Model an indicative monthly payment if part of an existing mortgage is kept and extra borrowing is added.

Porting payment calculator

Existing balance (£) Existing rate (%) Existing term (years) Additional borrowing (£) New borrowing rate (%) New borrowing term (years)

Existing part

£—

Additional part

£—

Combined estimate

£—

This does not confirm that your lender will allow porting or that the additional borrowing will be available.

Get a personalised quote

What to check before porting

Porting is usually a new application with the same lender. The lender may reassess affordability, property acceptability and credit profile, and the additional borrowing may be priced on a different product.

Your home may be repossessed if you do not keep up repayments on your mortgage.

Frequently asked questions

Is mortgage porting guaranteed? +

No. Porting depends on lender criteria, affordability, the new property, your circumstances and the terms of your existing mortgage.

Will the extra borrowing use the same rate? +

Not usually. Additional borrowing is often arranged on a current product rate, which may differ from the existing mortgage rate.

Does this include early repayment charges? +

No. If part of the old mortgage is repaid rather than ported, a charge may apply depending on the product terms.

Browse mortgage calculators Compare repayment, borrowing, affordability and stamp duty estimates. Check your affordability Estimate affordability from income and commitment assumptions. Estimate monthly repayments Model repayments using your own rate, term and deposit assumptions.

Calculator-led mortgage planning

UK Mortgage Calculators is centred on practical estimation tools. The pages help you model cautious scenarios before you decide whether to request a broker or adviser callback.