Is buy-to-let worth it in 2026? The UK numbers | August

Buy-to-let is worth it in 2026 where three things line up: a genuine yield, moderate borrowing, and a horizon long enough for capital growth to do its work. Where they do not, the numbers are unforgiving, and the honest answer for a heavily mortgaged higher-rate taxpayer buying in a low-yield area is that it probably is not. This article works the actual figures on current official data: what it costs to get in, what the property returns each year, and what that means as a return on the cash you put down, at different levels of borrowing and different growth assumptions. It covers the purchase decision; the day-to-day economics of the role once you own, the workload, regulation and operating income, are covered in our companion guide to whether being a landlord is worth it, and the wider strategy options sit in our guide to how to invest in UK property.

What has changed, and what it costs you

Four changes define the 2026 buy-to-let calculation, and each carries a date. Since Section 24 was fully phased in from April 2020, individual landlords can no longer deduct mortgage interest from rental profit and instead receive a 20 per cent tax credit, which our Section 24 guide works through in full; the practical effect is that higher-rate taxpayers pay tax on profit their mortgage has already consumed. The stamp duty surcharge on additional property rose to 5 per cent in October 2024, so an average-priced purchase now carries a five-figure tax bill before you own a key. From 6 April 2027, rental profit will be taxed two percentage points above the standard income tax rates, announced in the Autumn Budget 2025. And the Renters' Rights Act, in force since 1 May 2026, has made all tenancies periodic and abolished Section 21, so the investment is less liquid in practice than it once was: recovering possession requires a statutory ground, including the ground for selling, and the Renters' Rights hub sets out how that works.

None of this makes buy-to-let unviable. It makes it an investment that has to be underwritten properly rather than assumed to work.

The yields: where buy-to-let still pays

Gross rental yields vary more by region than any other input you control. On Zoopla's rental market analysis, the UK average gross yield sits at around 5.8 per cent, with the North East highest at close to 7.9 per cent and London lowest at around 5.1 per cent. That spread is the difference between an investment that comfortably clears its costs and one that depends entirely on capital growth. A landlord buying purely for income should be looking at the higher-yielding regions, and our guide to the best places to buy UK rental property works through where the returns are strongest; a landlord buying in the South East is, whether they frame it this way or not, making a capital growth bet with a rental subsidy. Run any specific property through the rental yield calculator before you offer, using the achievable rent from comparable listings rather than the agent's estimate.

The worked example: what you actually get back

Take the average UK property at £270,000 (ONS, April 2026) let at the average UK rent of £1,383 a month (ONS, 12 months to May 2026), a 6.1 per cent gross yield. Getting in with a 75 per cent mortgage requires a £67,500 deposit, around £17,000 of stamp duty including the 5 per cent additional-property surcharge, and roughly £2,500 of legal, survey and arrangement costs: about £87,000 of cash. The stamp duty calculator prices your specific purchase and the buy-to-let mortgage calculator models the financing.

Each year the property generates £16,596 of rent against roughly £2,850 of running costs (maintenance, insurance, compliance, software, a void allowance) and £10,125 of interest on a 5 per cent interest-only loan. After Section 24, the after-tax rental profit is around £2,900 for a basic-rate taxpayer and roughly £150 for a higher-rate taxpayer. The return therefore depends almost entirely on what house prices do:

That table is the honest shape of mortgaged buy-to-let in 2026: leverage turns modest growth into a strong return on cash and turns flat markets into dead money, and the growth row you believe in is a market view, not a guarantee. UK prices rose 3.8 per cent in the year to April 2026 on the ONS provisional estimate, after a stretch of near-flat years; both rows in that table have been the reality within the past five years.

A cash buyer's numbers are steadier and smaller. The same purchase costs about £289,500 all-in and returns £8,250 to £11,000 a year after tax depending on band, a 2.8 to 3.8 per cent net income yield, plus whatever growth arrives, with no financing risk. That is a respectable, inflation-linked income for money that wants to be in property; whether it beats simply holding the cash elsewhere depends on rates at the time and on growth, which is exactly the comparison to run before committing.

When it stacks up, and when it does not

Buy-to-let works in 2026 for buyers with large deposits or no borrowing, purchases in genuinely higher-yielding areas, basic-rate taxpayers, and anyone underwriting on today's rules including the 2027 rate change rather than the regime they remember. It works badly at maximum leverage in low-yield areas for higher-rate taxpayers, which is the exact profile of many landlords now leaving the sector. Higher-rate buyers building a mortgaged portfolio should price up a company structure before buying personally, since corporation tax treatment restores full interest deductibility at the cost of company admin and different mortgage pricing; our guide to holding property in a limited company works through when incorporation pays.

One further test belongs in the underwriting. Whether you actually want the job that comes with the asset. The purchase maths above assumes competent, organised management, and the gap between the modelled return and the achieved one is usually operational, missed rent going unchased, compliance dates slipping, expenses never recorded and so never deducted. That side of the decision, hours, stress and obligations included, is the subject of our landlord guide linked above, and it is where buy-to-let management software earns its place. The system cost of doing it properly is minor: August tracks the rent, expenses and compliance per property from day one, free for up to two tenancies, so the achieved return is visible against the one you underwrote.

Frequently asked questions

Is buy-to-let still worth it in 2026?

Yes, for the right purchase: a strong-yield area, moderate leverage, a long horizon and a tax position that survives Section 24. On average UK figures, a 75 per cent mortgaged purchase returns roughly 0 to 3 per cent on cash with flat house prices and 11 to 14 per cent if growth runs at 3.5 per cent, so the case rests heavily on growth. Cash and low-leverage purchases return a steadier 2.8 to 3.8 per cent net income plus growth.

How much money do you need for a buy-to-let?

For an average-priced UK property, around £87,000: a 25 per cent deposit of £67,500, roughly £17,000 of stamp duty including the 5 per cent additional-property surcharge, and about £2,500 of legal and purchase costs. Cheaper properties in higher-yielding regions need proportionately less, which is one reason yields and entry costs both favour the North.

Is buy-to-let worth it without a mortgage?

Usually, yes, if the income suits your goals. An unmortgaged average property nets £8,250 to £11,000 a year after tax depending on your band, a 2.8 to 3.8 per cent net yield on the full purchase cost, plus capital growth, with no exposure to interest rates. The trade-off is concentration and illiquidity against holding the same capital in other assets.

Is buy-to-let worth it in London?

On income alone, rarely: gross yields around 5.1 per cent are the lowest in the UK and net yields after London costs are thinner still. London purchases are primarily capital growth investments, and they suit buyers with the balance sheet to hold through flat periods rather than income-focused landlords.

Figures use ONS, Zoopla and statutory rules current at July 2026, with all assumptions stated so you can substitute your own. Property values can fall as well as rise, and past growth is not a guide to future growth. This article is general information, not financial, tax or investment advice; take independent advice before purchasing.