CoG Financial mortgage tools

How much could you realistically borrow?

Start with a quick personalised estimate for a purchase or remortgage, then add more detail only where it can improve the result.

Purchases & remortgages No credit search Full result on screen
Step 1 of 4 25%
More than a salary multiple

What our affordability estimate considers

A mortgage lender normally looks beyond headline income. The calculator combines income type, credit commitments, dependants, mortgage term and property equity to produce a more useful initial range.

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Income lenders may use

Employed, contractor, self-employed, pension and other regular income can be treated differently. The optional refinement lets you break these figures down.

Commitments and dependants

Loans, car finance, cards, childcare and other regular costs can restrict the mortgage payment a lender believes is sustainable.

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Deposit, equity and LTV

For purchases, the calculator combines estimated borrowing with your deposit. For remortgages, it assesses the proposed balance against the property value.

Lender-specific differences

Each lender applies its own affordability rules. An adviser may find a different result by matching your circumstances to the right lender.

Purchase calculations

Estimate your borrowing and property budget

Choose first-time buyer or home mover, enter the applicant income and deposit or equity available, and the result will show both an estimated borrowing range and potential overall property budget.

Discuss a purchase mortgage →
Remortgage calculations

Review your balance, equity and extra borrowing

The remortgage route considers the current balance, property value and any additional borrowing requested, producing an estimated new mortgage, LTV and repayment illustration.

Discuss a remortgage →
Common questions

Mortgage affordability calculator FAQs

Is the result a mortgage offer?

No. It is an initial illustration based on the details entered. A lender will complete its own affordability and credit assessment before making a lending decision.

Will using the calculator affect my credit score?

No. Completing this calculator does not perform a credit search. A credit search would only happen later where you agree to proceed with an appropriate lender or agreement in principle.

Why does the calculator show a range?

Lenders use different income multiples, expenditure assumptions and rules for variable or self-employed income. A range is more realistic than presenting one guaranteed figure.

Can I use it for a remortgage with additional borrowing?

Yes. Select “Remortgage and borrow more” and enter the current mortgage balance, property value and additional amount required.

Can a mortgage adviser find a different result?

Potentially. An adviser can compare how individual lenders treat your income, commitments, dependants, mortgage term and credit history.

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Ready for a lender-specific affordability check?

Complete the calculator above or speak with a mortgage adviser about how different lenders may assess your circumstances.