JackCousinsMortgages · Finance · Protection · Consultancy
Mortgage services

Large interest-only mortgages

A large interest-only mortgage needs more than a high income or valuable property. I help present the borrowing purpose, ongoing affordability and a credible repayment strategy for individual lender assessment.

Make the repayment strategy specific

The discussion covers the proposed term, loan-to-value, property, income and the asset or event intended to repay the capital. We test the evidence, timing and concentration risk rather than treating a future sale or investment growth as certain.

How I approach the case

We begin with what you want to achieve, your timescale and any part of the case that needs explaining. I review the evidence and suitable lender routes, then explain the available options and their costs. A recommendation follows the individual assessment; an initial conversation does not commit you to an application.

Where legal, tax or other specialist advice is needed, we identify it early so the finance fits the wider transaction. Tell me about any change in employment, borrowing, deposit or property details before proceeding.

What to prepare

  • Requested loan, term and loan-to-value
  • Income and expenditure evidence
  • Property and valuation information
  • Detailed repayment strategy
  • Assets, liabilities and existing secured borrowing

You do not need every document before saying hello. Start with a short outline; detailed or sensitive records should follow through an agreed secure route.

Before you proceed

Interest-only borrowing leaves the original capital outstanding and the repayment strategy must be accepted by the lender. Investments and property values can fall; a future sale may not produce the amount required.

Your questions, answered

How do you explain income that is not a regular salary?

The starting point is a clear account of where the money comes from, how often it is received and whether it is expected to continue. Depending on the circumstances, that may involve accounts, contracts, tax records or a history of variable pay. The evidence must support the figures used.

Can we look at the case before choosing a lender?

Yes. We first identify the income, credit or ownership issue that needs explaining, then assess suitable routes. Tell me about earlier applications and the reasons given for a decline, if known. Repeated applications without understanding the issue can leave the important question unresolved.

What makes a useful initial summary?

Outline the property, borrowing required, deposit source and timing. Add a short explanation of the part that is unusual: for example, company profits, a short contract history or a recent change in circumstances. Detailed records can follow through an agreed secure route.

Larger loans & individual properties£1m+ borrowing, substantial homes & landOpen the group to explore the loan, property and project pages relevant to your plans.9 routes

Further reading: MoneyHelper: mortgages and homebuying. Content reviewed 17 September 2026. General information; availability depends on the individual case.

Your next step

Let’s talk about your plans.

Interested in Large interest-only mortgages? Tell me what you want to achieve and when; we can work out what needs a closer look.

A useful starting point: Requested loan, term and loan-to-value; Income and expenditure evidence; Property and valuation information.

Put it in context

Different situations.
A useful starting point.

Illustrative examples for large interest-only mortgages. These are not records of actual client outcomes.