First-time investors

To buy your first rental property with a buy-to-let mortgage, you usually need much more than the deposit. Many lenders ask for a deposit of at least 25% of the price, and on top of that you pay stamp duty (or its Scottish or Welsh equivalent), legal, survey and lender fees, the cost of getting the property ready to let, and a cash reserve for empty months and repairs. In the illustrative example below, a £180,000 property in England needs a £45,000 deposit but about £66,800 of cash in total. Your own figure depends mainly on the price, the deposit your lender requires, and whether you already own a home.
It helps to split your budget into three parts:
Most "how much deposit" answers only cover part 1. You have to fund parts 1 and 2 at or soon after completion, before any rent arrives, and part 3 is what keeps the investment steady afterwards.
Buy-to-let deposits are normally larger than for a home you live in. Barclays says buy-to-let deposits are "typically at least 25%", and HSBC's published criteria cap buy-to-let borrowing at 75% loan-to-value. Some lenders offer higher loan-to-value products and some ask for more than 25%. Lender criteria change often, so treat 25% as a common starting point, not a rule.
Lenders also set conditions on the property and on you. For example, HSBC's published criteria include a minimum property value and a minimum personal income outside the rent. Other lenders use different thresholds.
Buy-to-let lending is mainly assessed on the rent, not just your salary. Lenders check that the expected rent covers the mortgage interest by a set margin, calculated at a "stressed" interest rate that is higher than the rate you will actually pay. This is often called the interest cover ratio or rental cover test. The Bank of England's Prudential Regulation Authority sets minimum underwriting standards for this in supervisory statement SS13/16, and each lender sets its own ratio and stress rate on top.
As one published example, HSBC requires annual rent of at least 125% of a stressed interest-only payment if all applicants are basic-rate taxpayers, or 145% if any applicant is a higher-rate taxpayer.
The practical point for your budget: if the rent is low relative to the price, the lender may only lend a smaller amount. You then need a bigger deposit than 25%, which increases the cash you need. The example below shows how this works.
Stamp Duty Land Tax (SDLT) applies in England and Northern Ireland. The rates GOV.UK publishes today for a single residential property are:
| Portion of the price | Standard rate | Higher rates for additional dwellings |
|---|---|---|
| Up to £125,000 | 0% | 5% |
| £125,001 to £250,000 | 2% | 7% |
| £250,001 to £925,000 | 5% | 10% |
| £925,001 to £1.5 million | 10% | 15% |
| Above £1.5 million | 12% | 17% |
Which column applies to you depends on your circumstances:
SDLT must be reported and paid within 14 days of completion, and your conveyancer usually handles this. Check your own figure with HMRC's SDLT calculator.
Different taxes apply, run by different authorities:
Use Revenue Scotland's calculator or the Welsh Government's LTT calculator for your own figure.
Expect to pay for conveyancing and searches, a survey, and the lender's valuation. Many lenders also charge a product or arrangement fee, and a mortgage broker may charge a fee. These vary widely, so get written quotes before you commit.
Even a property in good condition may need cleaning, minor repairs, some furniture or white goods, and the safety checks and certificates required where the property is located. Budget for these before the first rent arrives.
Your first month's rent may not arrive until a few weeks after completion, and repairs do not wait for a convenient time. A reserve held in cash, separate from your personal savings, covers:
There is no official reserve figure. Base yours on your actual monthly mortgage and running costs, and the age and condition of the property.
This is a fictional example to show the method. It is not a real property, a forecast or a typical result.
Assumptions
| Item | Amount |
|---|---|
| Deposit (25%) | £45,000 |
| SDLT at the higher rates (5% of £125,000 plus 7% of £55,000) | £10,100 |
| Legal fees and searches | £1,800 |
| Survey | £600 |
| Lender valuation | £300 |
| Lender product fee | £1,000 |
| Broker fee | £500 |
| Setup before letting | £2,500 |
| Cash reserve | £5,000 |
| Total cash needed | £66,800 |
In this example, the total cash is about 37% of the purchase price, against a 25% deposit.
If the rental would be the buyer's only residential property, SDLT at standard rates would be £1,100 (2% of £55,000) instead of £10,100, and the total would fall to £57,800.
If the lender's rental cover test is tighter. Suppose, purely for illustration, a lender required annual rent of 145% of interest at a stressed rate of 7%. The most it would lend is £11,400 of annual rent ÷ (1.45 × 7%), which is about £112,300. The deposit would rise to about £67,700 (around 38% of the price), and the total cash needed to about £89,500. At an illustrative 125% cover and 5.5% stress rate, the rent would support more than £135,000, so the 75% loan-to-value cap would be the limit instead. The ratio and rate here are assumptions, not any lender's current terms.
Tax on the same £180,000 purchase in each nation (rates checked 20 October 2026; individual buyer):
| Where | Owns no other residential property | Already owns a home |
|---|---|---|
| England or Northern Ireland (SDLT) | £1,100 | £10,100 |
| Scotland (LBTT, plus 8% ADS if applicable) | £700 | £15,100 |
| Wales (LTT main or higher rates) | £0 | £9,000 |
A non-UK resident buying in England or Northern Ireland would add 2% of the price (£3,600) to either SDLT figure.
Once you know your total cash figure, the next question is whether the property pays its way each month. Our guide on how to calculate rental cash flow covers that. If you are starting from a fixed pot of money and want to see what it can realistically support, read how to plan a property investment around your available capital. For the wider picture, see our guide for first-time investors.
A mortgage adviser authorised by the Financial Conduct Authority can tell you what lenders will offer on your circumstances, and a conveyancer or tax adviser can confirm your stamp duty position.
PROXERA's free buy-to-let calculator adds up your deposit, legal and survey costs and stamp duty into a "total cash in" figure, alongside yield, monthly cash flow and loan-to-value. Its stamp duty field fills in automatically using the England and Northern Ireland higher rates, so type over it if the rental will be your only property or you are buying in Scotland or Wales. Add lender fees, setup costs and your reserve yourself to reach the full figure.
Work out your starting budget with the buy-to-let calculator
Free online tool. Total cash in, monthly cash flow, gross and net yield.
No, not in England and Northern Ireland. HMRC's guidance says first-time buyers' relief applies where the buyer intends to occupy the property as their only or main residence. A property you buy to let out does not meet that condition, even if it is the first property you have ever bought.
In England and Northern Ireland, the higher rates apply when the purchase means you will own more than one residential property worth £40,000 or more. If the rental will be your only residential property, you would normally pay the standard rates instead. Married couples and civil partners are treated together, joint purchases pay the higher rates if any buyer would, and companies normally pay the higher rates regardless. Scotland (ADS) and Wales (LTT higher rates) have their own versions of these rules.
Some lenders allow a product fee to be added to the loan. That lowers the cash you need on day one, but you then pay interest on the fee for the life of the mortgage, and it slightly increases your loan-to-value. Ask your lender or broker to show both options side by side.
There is no official figure. A practical starting point is enough to cover several months of mortgage payments and running costs with no rent coming in, plus a repair allowance that reflects the age and condition of the property. Keep it separate from your personal emergency fund.
Information, not advice. This article is general information. It is not a personal recommendation and does not constitute financial, investment, mortgage, tax or legal advice.



