Most UK lenders ask for a minimum 5% deposit, but a larger deposit often means access to lower interest rates. This guide explains deposit sizes by LTV band and touches on schemes that can help first-time buyers.
This article is general information, not financial advice. It explains how mortgage deposits work in the UK so you can ask better questions before you apply. Everyone's situation is different, and a qualified mortgage adviser or broker can look at your specific circumstances.
What is the minimum deposit for a UK mortgage?
The minimum deposit most high-street lenders accept is 5% of the property's purchase price. On a £200,000 home, that is £10,000. On a £300,000 home, it is £15,000.
That 5% minimum is not a guarantee that any lender will approve your application. Lenders also assess your income, outgoings, credit history, and the property itself. The deposit size is just one piece of the picture.
What does loan-to-value (LTV) mean?
LTV stands for loan-to-value ratio. It is the size of the mortgage expressed as a percentage of the property's value.
A simple way to think about it: if you buy a £200,000 home with a £20,000 deposit (10%), you need a mortgage of £180,000. That is 90% of the property's value, so your LTV is 90%.
Your deposit and your LTV are directly linked. A bigger deposit means a lower LTV. Lenders use LTV to measure how much risk they are taking on.
How does deposit size affect the interest rate?
This is where the deposit size can really matter. Lenders group their mortgage products into LTV bands, and the rates usually improve as LTV falls.
A typical tier structure looks like this:
| Deposit size | LTV | Typical tier |
|---|---|---|
| 5% | 95% | Highest rates, fewest deals |
| 10% | 90% | More deals available |
| 15% | 85% | Rates begin to improve noticeably |
| 20% | 80% | Better rate access |
| 25% | 75% | A common threshold where rates improve again |
| 40% | 60% | Often the best available rates |
The important bit is that even a small step up in deposit can move you into a lower LTV band. If you are sitting at 9% saved, topping up to 10% could open access to a wider range of deals.
A lower rate matters over the full mortgage term. Paying, say, 0.3% less per year on a £200,000 mortgage over 25 years adds up to a meaningful difference in total cost, even though the monthly change might look small.
What to check before anchoring on a deposit number
The deposit figure you need is not purely a percentage of the purchase price. A few other things are worth bearing in mind.
Stamp Duty Land Tax (SDLT): In England and Northern Ireland, most buyers pay stamp duty on top of the purchase price. First-time buyers have a relief up to a threshold (the rates and thresholds are set by government and change over time). This cost comes out of your savings separately from the deposit, so it is worth checking the current rates on the UK Government website before you fix your savings target.
Conveyancing and survey costs: Legal fees, searches, and a property survey are additional costs that come alongside the deposit. Setting aside a few thousand pounds for these on top of your deposit figure is a useful precaution.
Lender affordability checks: Even with a sizeable deposit, a lender will assess whether your income comfortably covers the monthly repayments. Using an affordability checklist before you apply can give you a clearer sense of whether the numbers work.
Property valuation: Lenders value the property independently. If their valuation comes in lower than the agreed purchase price, your effective LTV rises. This can mean your rate changes or the lender offers less than expected.
Are there schemes that can help first-time buyers with the deposit?
There are some government-backed routes that first-time buyers in particular may want to look into. These change over time, so checking current availability with MoneyHelper or the UK Government website is the most reliable approach.
Lifetime ISA (LISA): You can save up to £4,000 a year into a Lifetime ISA, and the government adds a 25% bonus on top (up to £1,000 per year). The money must be used toward a first home (up to a certain purchase price threshold) or retirement. There is a withdrawal penalty if you take the money out for other reasons, so it is worth understanding the rules fully before opening one.
Shared Ownership: You buy a share of a property (typically between 25% and 75%) and pay rent on the remaining share. The deposit is based on the share you are buying, which can make the upfront sum more manageable. There are eligibility criteria and it is worth reading the terms carefully, as the arrangement is more complex than a straightforward purchase.
First Homes scheme: Certain new-build homes are offered to eligible first-time buyers at a discount to market value. The discount stays with the property on resale. Availability is limited and depends on the developer and local authority.
A useful first step is to check what is currently available on the MoneyHelper website or through the UK Government's official guidance pages, as scheme terms and thresholds are updated periodically.
What if I have a smaller deposit than the minimum?
If you are not yet at the 5% mark, it is worth thinking about a savings plan rather than rushing an application.
Some lenders do offer schemes at lower deposit levels from time to time, but these tend to come with restrictions and are not always available. Waiting until you have a solid 5% (plus funds for buying costs) generally puts you in a stronger position.
Checking your credit file while you save is also a practical step. A stronger credit history by the time you apply can broaden the lenders available to you.
Frequently asked questions
What is the minimum deposit for a UK mortgage? Most lenders require at least 5% of the property's purchase price. That means a £10,000 deposit on a £200,000 home. Some specialist lenders have higher minimums, and the available deals at 5% are fewer than at higher deposit levels.
What is loan-to-value (LTV) and why does it matter? LTV is the mortgage amount expressed as a percentage of the property value. A £180,000 mortgage on a £200,000 property is 90% LTV. A lower LTV generally gives access to lower interest rates because the lender carries less risk.
Does a bigger deposit always get you a better rate? Usually, yes. Rate tiers typically improve at 90%, 85%, 80%, 75%, and 60% LTV. The difference can be meaningful over the life of a mortgage, but the exact rates vary by lender and market conditions.
Are there schemes that help with the deposit? The Lifetime ISA lets first-time buyers save up to £4,000 a year and receive a 25% government bonus toward a deposit. Shared Ownership and other schemes may also reduce the deposit needed. MoneyHelper has up-to-date details on current availability.
Can I use a gifted deposit? Many lenders accept deposits gifted by a family member, but they will ask for a letter confirming it is a gift and not a loan. The donor may also be asked to confirm they have no financial interest in the property.
Will my credit score affect how much deposit I need? Sometimes. If your credit history has missed payments or defaults, some lenders may require a larger deposit to offset the added risk they see. Checking your credit file before applying can help you understand where you stand.
Further reading and sources
For more on how mortgages work in the UK, the mortgages guide covers the full picture, from how lenders assess applications to the different types of mortgage product available.
Sources used in this article:
- MoneyHelper (moneyhelper.org.uk), guidance on deposit sizes, LTVs, and government schemes for home buyers.
- UK Government (gov.uk), Lifetime ISA rules, Stamp Duty Land Tax rates, First Homes scheme details.
- Financial Conduct Authority (FCA), mortgage lending rules and consumer protections in the UK.
- What is the minimum deposit for a UK mortgage?
Most lenders require at least 5% of the property's purchase price. That means a £10,000 deposit on a £200,000 home. Some specialist lenders have higher minimums, and the available deals at 5% are fewer than at higher deposit levels.
- What is loan-to-value (LTV) and why does it matter?
LTV is the mortgage amount expressed as a percentage of the property value. A £180,000 mortgage on a £200,000 property is 90% LTV. A lower LTV generally gives access to lower interest rates because the lender carries less risk.
- Does a bigger deposit always get you a better rate?
Usually, yes. Rate tiers typically improve at 90%, 85%, 80%, 75%, and 60% LTV. The difference can be meaningful over the life of a mortgage, but the exact rates vary by lender and market conditions.
- Are there schemes that help with the deposit?
The Lifetime ISA lets first-time buyers save up to £4,000 a year and receive a 25% government bonus toward a deposit. Shared Ownership and other schemes may also reduce the deposit needed. MoneyHelper has up-to-date details on current availability.
- Can I use a gifted deposit?
Many lenders accept deposits gifted by a family member, but they will ask for a letter confirming it is a gift and not a loan. The donor may also be asked to confirm they have no financial interest in the property.
- Will my credit score affect how much deposit I need?
Sometimes. If your credit history has missed payments or defaults, some lenders may require a larger deposit to offset the added risk they see. Checking your credit file before applying can help you understand where you stand.