How Much Can I Borrow With a £100000 Deposit?

Short answer: a £100,000 deposit puts you in an exceptionally strong loan to value position, but it still does not decide how much you can borrow on its own. Your borrowing limit is mainly determined by income, affordability, and financial stability, not just the size of the deposit.

At this level, many buyers expect lenders to stretch borrowing automatically. In practice, the biggest advantages of a £100,000 deposit are access to the widest range of lenders, the most competitive interest rates, and smoother underwriting, rather than higher income-based borrowing.

This guide explains how much you can borrow with a £100,000 deposit, how lenders assess it, and what can still limit borrowing.

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What a £100000 Deposit Actually Does

A deposit sets your loan to value (LTV).

Loan to value is the percentage of the property price you are borrowing. A £100,000 deposit can move you into some of the lowest mainstream LTV bands.

Examples:

• £300,000 property → £100,000 deposit = 67% LTV
• £350,000 property → £100,000 deposit = 71% LTV
• £400,000 property → £100,000 deposit = 75% LTV

At these LTV levels:

• Nearly all mainstream lenders are available
• Interest rates are usually at their most competitive
• Underwriting is often calmer and less restrictive

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Typical Borrowing Ranges With a £100000 Deposit

Borrowing is still driven by income, not deposit size.

Most lenders calculate borrowing using income multiples, commonly around 4 to 4.5 times household income, with flexibility depending on circumstances.

Illustrative examples:

• Household income £60,000
  • Typical borrowing: £240,000–£270,000
  • With £100,000 deposit → property around £340,000–£370,000

• Household income £80,000
  • Typical borrowing: £320,000–£360,000
  • With £100,000 deposit → property around £420,000–£460,000

• Household income £100,000
  • Typical borrowing: £400,000–£450,000
  • With £100,000 deposit → property around £500,000–£550,000

If income does not support the mortgage size, the deposit alone will not increase borrowing.

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Why Income Still Caps How Much You Can Borrow

The deposit reduces lender risk — income repays the mortgage.

Lenders must still be satisfied that:

• Monthly repayments are affordable
• You could cope with interest rate increases
• Your spending leaves a clear surplus

Even with a very large deposit, affordability rules remain central to the decision.

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Is a £100000 Deposit Considered Very Strong?

Yes — in almost all cases.

A £100,000 deposit typically places borrowers:

• At 65–75% LTV on many purchases
• Well below higher-risk lending thresholds

This usually results in:

• Access to the most competitive mainstream rates
• Fewer lender restrictions
• Faster and smoother application journeys

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How Credit and Bank Conduct Still Matter

Behaviour is still assessed, even with a large deposit.

Lenders will continue to review:

• Bank statement conduct
• Overdraft usage
• Credit trends and balances
• Existing financial commitments

Poor conduct can still restrict borrowing or lender choice, even when LTV is very strong.

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Does a £100000 Deposit Improve Rates Compared to £90000?

Often, yes — if it crosses a pricing band.

Moving from £90,000 to £100,000 may:

• Push LTV below key thresholds such as 75% or 70%
• Unlock better interest rate tiers
• Improve product availability

The benefit comes from crossing LTV bands, not simply from the higher deposit amount.

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First-Time Buyers With a £100000 Deposit

A £100,000 deposit is exceptionally strong for first-time buyers.

First-time buyers often find:

• LTV is no longer a limiting factor
• Income and affordability become the main constraints
• Applications involve fewer conditions and questions

At this level, financial stability matters far more than deposit size.

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Single Income Borrowing With a £100000 Deposit

Affordability still determines borrowing.

For single-income buyers:

• LTV is rarely the issue
• Income multiple and spending behaviour usually cap borrowing

The deposit reduces risk but does not increase income-based limits.

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What Can Still Reduce Borrowing With a £100000 Deposit?

Borrowing may still be limited if:

• Income is variable or recently changed
• Credit issues are recent
• Bank statements show instability
• Existing unsecured debts are high

Lower LTV gives lenders flexibility, but affordability rules still apply.

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How to Maximise Borrowing With a £100000 Deposit

Borrowers often improve outcomes by:

• Keeping bank statements consistent
• Reducing unsecured debts
• Avoiding new credit before applying
• Allowing income to settle
• Being realistic about property price

Preparation helps you get the full benefit of a strong deposit position.

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Is It Worth Saving More Than £100000?

Sometimes — but rarely to increase borrowing.

Saving beyond £100,000 may:

• Improve interest rates slightly
• Reduce monthly repayments
• Provide a stronger financial buffer

However, it does not usually increase borrowing unless income also increases.

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Key Takeaways

• A £100,000 deposit places you in a very strong LTV position
• Income still determines borrowing limits
• Lower LTV usually means better rates and smoother approval
• Behaviour and stability are still assessed
• Large deposits improve pricing more than loan size

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Learn More in Related Guides

You can learn more about deposits, affordability, and lender criteria in our other Mortgage Bridge guides.

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This guide provides general information only. Personalised mortgage advice should always come from a regulated mortgage adviser.