What mortgage can you get for £600 a month?

A £600-a-month mortgage repayment budget can be a useful starting point, but it doesn’t automatically translate into one fixed loan amount. The mortgage you can realistically borrow depends on how lenders assess affordability, the interest rate you’re offered, the term you choose, and your wider financial situation.

This guide explains what a £600 monthly repayment could mean for mortgage borrowing, and the key factors that can move the borrowing figure up or down.

What size mortgage could £600 a month buy?

In broad terms, a repayment of around £600 per month could support a mortgage loan somewhere in the region of about £130,000 to £170,000.

That range is wide because monthly repayments are affected by:

• The interest rate you’re offered
• The mortgage term (for example, 25 years vs 30 years)
• Your deposit (which influences loan-to-value and can affect the options available)

Even relatively small changes to rate or term can noticeably affect the loan size.

Important: The figures above are illustrative only. Your actual borrowing will depend on your personal circumstances and the lender’s criteria at the time.

Example repayment scenarios (illustrative)

The examples below show how similar monthly repayments can correspond to different borrowing levels depending on interest rate and term. They assume a 10% deposit and are for illustration only.

What this illustrates: if your interest rate is higher, the same £600 payment often supports a smaller loan. If you can stretch the term, the same payment can support a larger loan.

How lenders calculate affordability (it’s not just your monthly budget)

While £600 is your target repayment, lenders typically assess affordability using your annual income and regular outgoings, then apply their own affordability models.

A common starting point is an income multiple approach. Many lenders consider borrowing in the region of around 4 to 4.5 times your annual income, though this can vary depending on circumstances.

Some borrowers may be assessed at higher multiples where there’s evidence of stability and affordability (for example, lower existing debt and a clear, sustainable income profile). The exact level depends on the lender and your full application.

Note: income multiples are only a guide. Your actual borrowing will depend on your personal circumstances and the lender’s criteria at the time.

A simple way to estimate your borrowing limit

To build a rough picture of what you might borrow, you can work backwards from your budget:

1. Total household income (before tax)
2. An indicative income multiple (for example, 4x, 4.5x, 5x, 6x)
3. The deposit you plan to use

Even then, the final loan size you can secure will still depend on the repayment cost at the interest rate you’re offered and the lender’s affordability assessment.

Why deposit matters

Your deposit affects loan-to-value (LTV), which can influence both:

• The interest rate you’re likely to be offered
• How comfortable a lender is with the risk level

In many cases, a larger deposit improves your position when aiming for a specific monthly repayment.

Other factors that can affect how much you can borrow

Even if £600 feels comfortable, lenders look at your overall financial picture. The biggest areas that can change the amount you’re assessed for include:

Deposit and loan-to-value

• A bigger deposit generally helps.
• If you’re using a smaller deposit, you may need to compensate in other ways (for example, stronger affordability, lower debts, or a more favourable credit profile).

Credit history and existing debt

• Lenders assess reliability through credit history.
• Regular commitments (credit cards, loans, maintenance payments, and other monthly outgoings) can reduce the amount you can borrow.

Employment type and income stability

• Some lenders treat different income types differently.
• Self-employed applicants and those with variable income may face additional checks, which can affect the final borrowing figure.

Age and mortgage term

• The term you choose directly affects the monthly repayment.
• Lenders may apply limits based on age and the length of time the mortgage would run.

How to make a £600 budget go further

If your aim is to maximise what you can buy while keeping repayments around £600, the main levers you can often influence are:

• Interest rate: even small improvements can increase affordability.
• Mortgage term: longer terms can reduce the monthly cost, though they can increase total interest paid over time.
• Deposit size: improving LTV can help with lender appetite and pricing.
• Application strength: presenting a clear, consistent picture of income and commitments can support a smoother assessment.

A mortgage broker can help you understand how different lenders may approach affordability and income types, and how to structure your application around your repayment target.

Can you get a buy-to-let mortgage for £600 a month?

It may be possible, but buy-to-let lending is assessed differently from residential mortgages.

Buy-to-let lenders typically focus on factors such as:

• Rental income potential
• Deposit level
• Whether the mortgage is interest-only

Because buy-to-let criteria can be more specific, a repayment target alone doesn’t determine the loan size.

Using £600 a month as a property-search filter

A practical way to use this budget is to treat £600 as a repayment ceiling, then work backwards to what loan size and deposit you’d likely need.

From there, you can sanity-check affordability by considering:

• How repayments might change with different interest rates
• Whether the term you want fits your plans
• How much deposit you can realistically put down

This approach helps you focus on properties that fit your budget without relying on a single “magic number” for borrowing.