Remortgage LabUK decision tools

How much can I borrow?

Last checked UK · illustrative onlyNot a lender or brokerAboutDisclaimer

RLPublished by Rodway Labs — not a mortgage adviser

A transparent income-multiple ballpark with a stress-rate payment note. This is not a lender affordability assessment or a mortgage offer.

Methodology & assumptions · Last checked

Your inputs

Starter figures are UK examples you can edit — replace them with your balance, rate, term and fees. Results update as you type.

Results

Total income

£80,000

Max from multiple

£360,000

Commitment haircut (annualised)

£2,400

Indicative maximum loan

£357,600

Payment at 7.50% stress

Not a lender decision — illustrative only

£2,642.63

Payment at illustrative rate

£1,987.66

Max loan given deposit & value

£310,000

Illustrative LTV (capped loan)

88.6%

Not a mortgage offer. Remortgage Lab does not provide FCA-regulated advice. Use only as a ballpark before speaking to a lender or adviser.

Illustrative only — not personalised financial advice and not an FCA-regulated mortgage recommendation. Check your offer, Key Facts Illustration, and lender terms. Rates, fees and tax rules change. Focus is England & Northern Ireland where tax/SDLT rules apply; Scotland and Wales have different property tax regimes. Full calculator disclaimer.

What to do next

Methodology, equations & assumptions

Last checked . Figures are illustrative; tax and product rules can change. England & NI focus for SDLT-related tools — Scotland (LBTT) and Wales (LTT) differ.

Indicative max loan ≈ (total income × multiple) − (other monthly commitments × 12). Stress payment uses the repayment formula at illustrative rate + stress buffer.

  • Highly simplified — not an FCA affordability test.
  • Default multiple 4.5× (adjustable). Commitment haircut is illustrative only.
  • Does not assess credit, employment type, or lender criteria.

Notes & FAQs

Why do lenders quote different amounts?
They use detailed outgoings, credit data, and stress tests. A simple multiple is only a starting point — often optimistic or pessimistic depending on your commitments.

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