Written by Oroni Chowdhury · Published: October 2026 · Last reviewed: October 2026 · Applies to the 2026/27 tax year
Anyone asking how much deposit to buy to let soon discovers the advertised percentage is just a starting point. The lender will also check whether the rent can carry the mortgage, and the outcome can push the deposit well past 25%. Then comes stamp duty, a bill many new landlords underestimate.
This guide walks through the deposit, the valuation, the rental cover test, stamp duty and the full cash figure for 2026/27. The worked numbers are for England and Northern Ireland, with notes on Scotland and Wales.
- A 25% deposit is the norm; 20% is available from fewer lenders, often at higher rates.
- Lenders base the loan on the lower of the price and the valuation.
- Rental cover tests vary by lender, and some ask more of higher-rate taxpayers.
- Owning a home already usually means a 5% stamp duty surcharge in England and Northern Ireland.
- On a £250,000 purchase, deposit plus stamp duty reaches £77,500 before any fees.
- Keep a cash reserve after completion, separate from the deposit.
How Much Deposit to Buy to Let: The Short Answer
For most applicants, the honest reply to how much deposit to buy to let is 25%. Here is what that looks like in cash, alongside the 20% some lenders allow and the 40% that usually earns the keenest rates.
| Property price | 20% deposit | 25% deposit | 40% deposit |
|---|---|---|---|
| £150,000 | £30,000 | £37,500 | £60,000 |
| £250,000 | £50,000 | £62,500 | £100,000 |
| £400,000 | £80,000 | £100,000 | £160,000 |
Loan to value in plain English
Loan to value (LTV) compares the mortgage with the property’s value. Put down 25% and you have a 75% LTV loan. A lower LTV means less risk for the lender, which is why rates tend to fall as the deposit rises.
Can you get a buy to let mortgage with a 20% deposit?
Yes, in some cases. A minority of lenders will lend up to 80% of the value, so an eligible applicant may manage with 20% down. These deals are harder to find than 75% LTV products and often carry higher rates or a stricter rent test. A lender can also ask for more if the valuation, expected rent or condition of the property falls short of its criteria.
What Pushes Your Deposit Up or Down
Two people working out how much deposit to buy to let the same flat may end up with different figures. These are the usual reasons.
Property type
Lenders treat some homes as harder to sell or let. HMOs, flats above shops, high-rise and ex-local authority flats, and certain new builds often need 30% or more, and some lenders decline them outright.
Credit record and personal income
Defaults or missed payments shrink the list of willing lenders and can raise the deposit. Many lenders also want a minimum personal income, even though the rent is expected to pay the mortgage.
First-time landlords
Some lenders prefer applicants who already own their home, and a few will not offer buy to let to first-time buyers. Fewer products can mean a larger deposit.
What happens if the valuation is lower than the price?
Buy to let lenders usually size the mortgage on whichever is lower, the price or their valuation. Agree to pay £250,000 for a flat the lender values at £240,000, and a 75% loan is worked out on £240,000. That caps the mortgage at £180,000, leaving £70,000 of the price for you to find before tax and fees.
Buying through a limited company
In England and Northern Ireland, companies generally pay the higher stamp duty rates on residential purchases of £40,000 or more. Purchases above £500,000 can bring in extra rules, including a 17% corporate rate and specific reliefs, so check the company’s position before comparing costs with personal ownership.
Company buy to let mortgages commonly need 25% or more, depending on the lender, the property and how the company is set up. Some lenders also want personal guarantees from directors. Weigh the mortgage terms and the full tax and purchase costs before picking a structure.
Rental Cover: The Test That Decides Your Deposit
A lender’s maximum LTV tells you the ceiling. The rental cover test, known as the interest cover ratio (ICR), tells you whether your property can actually reach it. In practice this test often decides how much deposit to buy to let.
How the interest cover ratio works
The lender calculates a year’s interest at a “stressed” rate, normally above the rate you will pay, and the yearly rent must beat that figure by a set margin. Typical lender criteria may include:
- roughly 125% for basic-rate taxpayers;
- roughly 145% for higher and additional-rate taxpayers;
- roughly 125% for some limited company applications, though rules differ between lenders.
Treat these as examples rather than industry-wide rules. Lenders use different ratios, stress rates and methods depending on your tax position, the mortgage term and the product, so ask a mortgage broker to confirm the criteria for your deal, as they change how much deposit to buy to let you will need.
Why some higher-rate taxpayers face a tougher test
The reason is tax. Individual landlords cannot deduct residential mortgage interest from rental profit; under HMRC’s finance cost rules they receive a tax reduction at the basic rate instead. A higher-rate landlord therefore keeps less of the rent after tax, and some lenders respond with a wider margin. Companies deduct interest in full. Not every lender applies a higher ICR to higher-rate taxpayers, though: it depends on the lender’s underwriting policy and the product.
Tested at 125%, Daniel could borrow up to about £192,000. The lender’s 75% cap of £187,500 applies first, so he needs the standard £62,500 deposit.
Tested at 145%, his maximum falls to about £165,500, and the deposit climbs to roughly £84,500, or 34% of the price. Same flat, same rent, very different answer to how much deposit to buy to let.
Interest-only or repayment: does it affect the deposit?
Many buy to let mortgages are taken on an interest-only basis, although repayment loans are available. With interest-only, monthly payments cover interest alone and the full loan is still owed at the end of the term. A repayment mortgage clears the balance over time but costs more each month. Lenders may run affordability and rental cover differently for each type, so check the product terms before deciding how much to put down.
Is a Bigger Deposit Worth It When You Buy to Let?
Once you know how much deposit to buy to let your chosen property, going beyond the minimum has real advantages, along with some costs.
| Why a larger deposit helps | What it costs you |
|---|---|
| Cheaper rates at 60% LTV and below | Less cash for repairs, voids and emergencies |
| Easier to pass the rental cover test | A lower return on the money invested |
| Wider choice of lenders and products | Longer wait before a second purchase |
| Smaller payments and a buffer if rates rise | Cash is hard to release without remortgaging |
Keep a reserve after the deposit
Whatever you settle on for how much deposit to buy to let, hold some cash back. With a £900 monthly mortgage payment, three to six months of payments means a starting reserve of £2,700 to £5,400. Keep that apart from money for repairs, insurance excesses and empty periods. The right amount depends on the property’s condition, your other income and how well you could absorb a surprise bill.
Stamp Duty on a Buy to Let in 2026/27
Any answer to how much deposit to buy to let needs the stamp duty figure beside it. In England and Northern Ireland, buying a rental while you already own a home usually means Stamp Duty Land Tax at the higher rates: an extra 5% on top of the standard bands of 0% to £125,000, 2% to £250,000 and 5% to £925,000. Older articles quoting a 3% surcharge are out of date.
| Price | Standard SDLT | 5% surcharge | Total SDLT |
|---|---|---|---|
| £150,000 | £500 | £7,500 | £8,000 |
| £250,000 | £2,500 | £12,500 | £15,000 |
| £400,000 | £10,000 | £20,000 | £30,000 |
When the higher rates apply
According to HMRC’s guidance on buying an additional residential property, the higher rates cover purchases of £40,000 or more where the new property will not be the only residential property you own anywhere in the world. Property owned by a spouse or civil partner counts as yours for this test.
If the rental will be the only home you own, the surcharge normally does not apply, but first-time buyer relief is not available on a buy to let. For a deeper look at landlord stamp duty, read this guide to the 5% landlord surcharge.
Scotland and Wales
- Scotland: buyers pay Land and Buildings Transaction Tax plus an Additional Dwelling Supplement of 8% on the full price, for contracts from 5 December 2024. On a £250,000 flat that supplement alone is £20,000.
- Wales: Land Transaction Tax has separate higher residential rates, beginning at 5% up to £180,000 and 8.5% up to £250,000, which makes £14,950 on a £250,000 buy to let.
The Real Cash You Need: Deposit Plus Costs
Working out how much deposit to buy to let is step one. The table below adds stamp duty for a buyer in England who already owns a home, using a 25% deposit.
| Price | 25% deposit | SDLT | Cash before fees |
|---|---|---|---|
| £150,000 | £37,500 | £8,000 | £45,500 |
| £250,000 | £62,500 | £15,000 | £77,500 |
| £400,000 | £100,000 | £30,000 | £130,000 |
Further costs usually include conveyancing, searches, a survey, landlord insurance, safety certificates and any first repairs or furnishing. Prices vary a great deal by area and property, so collect written quotes. Together these extras can matter almost as much as how much deposit to buy to let.
Lender fees deserve their own line. Some lenders set the arrangement fee as a percentage of the loan, others charge a flat amount. You may also pay for a specialist valuation, broker advice and any licensing checks the property needs. Ask for a full mortgage illustration and a conveyancing estimate so you know the exact sum due before completion.
Using equity from your home as the deposit
For plenty of buyers, the bigger question is not how much deposit to buy to let but where the money comes from. Remortgaging your own home is a common route.
When deciding whether interest counts as a finance cost of a property business, HMRC generally looks at what the borrowed money was used for. Interest on equity released from your home and spent wholly on buying a rental may therefore qualify, even though your home is the security.
Things get more complicated if part of the money goes on personal spending or other investments, so record how much you borrowed and exactly where it went. Individual landlords get a basic-rate tax reduction on qualifying residential finance costs, not a full deduction.
Tax Costs to Plan For After You Buy
Knowing how much deposit to buy to let gets you the keys; tax then decides what the property really earns. Build these points into your sums from day one:
- Income Tax on rent: rental profit is taxed at your usual rates, and individual landlords get only a basic-rate reduction for mortgage interest.
- Self Assessment: the property allowance can make up to £1,000 of rental income tax-free. Between £1,000 and £2,500 you should contact HMRC, and above £2,500 after allowable expenses, or £10,000 before them, you generally need a Self Assessment return. If you do not already file one, the usual deadline to register is 5 October after the tax year concerned. Other reporting rules can apply in some cases.
- Making Tax Digital: sole traders and landlords whose combined qualifying income is over £50,000 must use Making Tax Digital for Income Tax from April 2026, falling to over £30,000 from April 2027 and over £20,000 from April 2028. Qualifying income is gross self-employment and property income before expenses, taken from the relevant earlier year’s Self Assessment return. HMRC’s other conditions must also be met, and exemptions may apply.
- Capital Gains Tax on sale: residential property gains are taxed at 18% or 24%, and a UK property sale usually has to be reported and paid within 60 days.
Common Mistakes When Saving for a Buy to Let
Most errors over how much deposit to buy to let come from budgeting too narrowly.
| Mistake | Result | Better approach |
|---|---|---|
| Saving the deposit and nothing else | No money left for stamp duty and fees | Budget for the total cash figure |
| Relying on the old 3% surcharge | A stamp duty bill thousands higher | Use the current 5% higher rates |
| Skipping the rental cover check | A smaller mortgage offer than planned | Ask your broker which ICR applies to you |
| Assuming the valuation will match the price | A gap to fund at short notice | Keep spare cash until the valuation is in |
| Mixing released equity with personal spending | Interest relief harder to support | Keep the money separate and documented |
FAQs: Buy to Let Deposits
How much deposit to buy to let a £200,000 house?
At 25%, the deposit is £50,000. If you already own a home in England, stamp duty with the 5% surcharge adds £11,500, so plan for £61,500 before fees.
Can I buy to let with a 10% deposit?
It is very rare. Most buy to let lenders cap borrowing at 75% to 80% of the value, so a deposit of at least 20% is usually needed.
Is the deposit higher for a limited company?
It can be. Company buy to let mortgages usually need 25% or more, and some lenders require directors to provide a personal guarantee.
Can I use a gifted deposit for a buy to let?
Some lenders accept a family gift, normally with a signed letter confirming it is not a loan. Many do not, so check lender criteria early.
Do I pay the stamp duty surcharge if I don’t own a home?
Not normally, if the rental will be the only residential property you and your spouse own. First-time buyer relief does not apply to a buy to let, though.
Can I use equity from my home as a deposit?
Yes, and many landlords do. Interest on money used wholly to buy the rental may count as a finance cost of the letting business, provided you keep clear records.
Is the deposit based on the price or the valuation?
Lenders usually use whichever is lower. If the valuation comes in under the price, you cover the difference yourself.
Is there tax on the deposit money itself?
No. Spending your own savings on a deposit is not taxed, although a large gift could matter for Inheritance Tax if the giver dies within seven years.
Final Verdict: How Much Deposit to Buy to Let in 2026/27
So, how much deposit to buy to let? Plan for 25% of the price, possibly more depending on your lender’s rent test or the property type, then add stamp duty with the 5% surcharge, fees and a cash reserve. For a £250,000 property in England, that means at least £77,500 before fees, with tax planned before you buy.
- Use the tables above to work out your full cash figure, then ask a mortgage broker about rental cover.
- Ask our online Self Assessment accountants to set up your rental income reporting from the first tax year.
- Get a fixed-fee quote at Get a Quote, call 0116 403 0595 or email info@taxreturnaccountants.uk.
Why trust this guide
- Stamp duty figures worked out from GOV.UK, Revenue Scotland and Welsh Government rates.
- Tax and reporting rules checked against HMRC guidance for 2026/27.
- Lender criteria shown as examples, with the limits of each figure explained.
- Last reviewed: October 2026.
- GOV.UK – SDLT residential property rates
- GOV.UK – SDLT: buying an additional residential property
- Revenue Scotland – LBTT and ADS changes
- Welsh Government – LTT rates and bands
- HMRC – PIM2052 Deductions: interest
- GOV.UK – Renting out a property: paying tax
- GOV.UK – When you need to use Making Tax Digital for Income Tax
- GOV.UK – Capital Gains Tax rates