Bad credit mortgages for first-time buyers with a large deposit

Having bad credit can feel like an extra hurdle when you’re trying to buy your first home. The good news is that a larger mortgage deposit can help because it reduces the loan-to-value (LTV) and may lower the lender’s perceived risk.

That said, a deposit alone doesn’t erase credit concerns. Lenders typically look at the overall picture: the nature of the credit issue, how long ago it happened, your current financial stability, and whether your income and outgoings support the repayments.

This guide explains how a larger deposit may help, what lenders still focus on, and the steps you can take to present your application in the strongest possible way.

Related first-time buyer guides:

Your message

Your Name

Your Email

Your Phone Number

Please provide either an email address or a phone number so we can reply. Name and message are optional.

First-time buyer mortgage guide for bad credit and a large deposit

How a large deposit can help with bad credit

A mortgage deposit is more than just a number. For lenders, it can be a signal of commitment and reduces the amount they would need to lend.

In many cases, a lower LTV can mean:

More lenders may be willing to consider the application
Your application may be assessed more favourably alongside other positive factors

For first-time buyers, this can be particularly important because you may not have a long track record of borrowing and repayment. A strong deposit can help offset uncertainty, but it doesn’t guarantee acceptance.

Loan-to-value calculator

Change any value and the other figures will update automatically.

Try an example: £250,000 home with a £25,000 deposit → 90% LTV

Property value

£40,000 £5,000,000

Changing the property value keeps the mortgage amount and recalculates your deposit or equity and LTV.

Deposit or equity

£0 £250,000

Mortgage amount

£0 £250,000

Loan-to-value

90%

0% 100%

Your loan-to-value

90%

A £225,000 mortgage on a £250,000 property.

90%

90% mortgage 10% deposit or equity

Search mortgages with these figures

Starts with a residential purchase. You can change the mortgage type and purpose in the search.

No mortgage borrowing needed

With these figures, the property value is fully covered by your deposit or equity. No mortgage borrowing is required.

Small mortgage amount

Fewer lenders offer mortgages below £25,000, so your options may be limited. Product and legal fees can also have a greater impact on the overall cost of a smaller mortgage.

Low property value

Fewer lenders offer mortgages on properties valued below £50,000. Minimum property values vary by lender and property type.

Buying to let?

If this is a buy-to-let purchase, most lenders cap borrowing at 75–80% loan-to-value, with some specialist options reaching 85%. This cap applies to buy-to-let mortgages only — residential lending typically extends to 95%.

High-LTV residential mortgage

Residential mortgages above 95% LTV have limited availability and often require a specialist mortgage product or scheme. Talk to your mortgage adviser about your options.

No deposit or equity buffer

You have no deposit or equity buffer. A fall in the property's value could leave you owing more than it is worth. No-deposit residential mortgages have limited availability and specific eligibility requirements. Speak to your mortgage adviser.

Why bad credit still matters (even with a big deposit)

Even if you have a substantial deposit, lenders usually want to understand:

What the bad credit marker is (for example, late payments, defaults, CCJs, IVA, bankruptcy)
When it happened and whether it’s improving over time
Whether the underlying cause has been addressed (for example, repayment plans completed or circumstances changed)
How you manage your finances now

A large deposit may reduce perceived risk, but it doesn’t automatically change how a lender views the credit history itself. Two borrowers with the same deposit could receive different outcomes depending on the type and timing of the credit issue.

What lenders typically look at alongside your deposit

When assessing a first-time buyer with bad credit and a large deposit, lenders often consider:

The type of credit issue and its severity. Some credit events are treated more seriously than others. The lender’s decision can depend on whether the issue is:
- isolated or repeated
- recent or historic
- fully resolved or still active
Time since the credit event. In many cases, the longer the period since the credit issue was recorded (and the more stable your recent behaviour), the better.
Affordability and repayment capacity. Your deposit may help with LTV, but lenders still need confidence you can make repayments consistently. They will typically review:
- income stability
- employment or contract status
- regular outgoings
- existing commitments
Mortgage details and property factors. The property you’re buying can influence the lender’s comfort level, including valuation outcomes and whether the purchase price aligns with the deposit and the mortgage amount.

Steps to strengthen your application with bad credit

If you’re a first-time buyer and you have a larger deposit, the next step is to make sure the rest of your application supports the story your lender needs to hear.

Check your credit report and understand what’s driving the score

Before applying, review what’s recorded and when it started. Knowing the exact marker helps you plan the right approach and avoid surprises during underwriting.

Address any outstanding issues

Where possible, ensure any debts linked to the credit issue are settled or being managed appropriately. Lenders often look for evidence that the situation is under control.

Keep recent credit behaviour clean

In the months leading up to an application, avoid unnecessary new credit applications and focus on keeping payments up to date.

Prepare a clear affordability picture

Be ready to explain your income and outgoings in a way that supports the repayments. Consistency matters, and so does transparency.

Use the deposit strategically

A larger deposit can reduce LTV, but it can also affect how the mortgage is structured. The “best” deposit use depends on the lender’s criteria and the overall affordability assessment.

Specialist lenders and case-by-case decisions

Bad credit mortgages often involve lenders that consider applications more flexibly than mainstream options. With a large deposit, you may find that specialist lenders are more willing to look at your circumstances holistically, particularly where the credit issue is historic and your current finances are stable.

If your bad credit is more recent or involves more serious markers, a large deposit may still help, but the application may require a more specialist lender route and careful structuring.

A broker can help by matching your situation to lenders whose criteria are more likely to align with your credit profile and deposit level.

82+ lenders

If a lender is concerned about the credit history despite your deposit, there may be other structures that can improve the overall risk assessment, depending on your circumstances. The right route depends on the specific credit marker, how long ago it occurred, and whether affordability is strong.

Key takeaways

A large deposit can reduce lender risk and may improve your chances, particularly for first-time buyers.
Bad credit still matters, especially the type of issue and how recent it is.
Lenders assess the whole application: credit history, affordability, income stability, and property factors.
Strengthen your application by understanding your credit report, improving recent behaviour, and presenting a clear repayment capacity.

If you’re planning your first purchase with bad credit, a larger deposit can be a helpful advantage, provided the rest of your application is prepared with the lender’s perspective in mind.