Is Buy to Let Worth It in the UK?

Buy-to-let is still worth it for some landlords, but it is no longer the near-guaranteed win it looked like through the 2010s. Higher mortgage rates, the loss of full mortgage interest relief under Section 24, a stamp duty surcharge on additional properties, and now the Renters' Rights Act have all made the sums tighter. Whether it is worth it for you specifically depends on your deposit, your tax position, the property's real net yield, and how leveraged you are, not on a single national answer.

This guide looks at what has actually changed since the 2010s, why total return matters more than yield alone, who buy-to-let still suits in 2026, and how to run the numbers on a specific property rather than relying on general sentiment either way.

What has changed since the 2010s

Several separate changes have layered on top of each other over the past decade, and it is the combination, not any single one, that has narrowed margins for many landlords:

• Section 24 removed full mortgage interest relief for personal-name landlords. Since April 2020, individual landlords can no longer deduct mortgage interest from rental income before working out tax; instead they get a flat 20% credit against the tax bill. This barely affects basic rate taxpayers but can mean a higher rate taxpayer pays tax on cash they never actually kept, particularly on a highly leveraged property. Our Section 24 guide works through the exact mechanics with worked examples across tax bands.
• Mortgage rates are structurally higher than the 2010s. The very low fixed rates available for much of the 2010s and early 2020s are gone, and the stress-tested rental cover lenders require means borrowing capacity is lower for the same rent than it was when rates and stress rates were both lower.
• A stamp duty surcharge applies to additional residential property, adding meaningfully to the upfront cost of buying compared with the 2010s, when no such surcharge existed.
• The Renters' Rights Act changed the legal framework for letting, and this is genuinely new as of this update in August 2026, not a 2010s-era rule. Section 21 "no-fault" evictions ended for new notices from 1 May 2026, tenancies are now open-ended periodic agreements rather than fixed terms, and rent increases are limited to once every 12 months with a formal notice process. These are confirmed, in-force changes, not proposals, though some further measures under the Act, including a national landlord database and ombudsman, are still being phased in through 2026 and beyond. Our Renters' Rights Act guide sets out exactly what has changed versus what is still pending.
• Compliance and licensing requirements have grown, with more properties caught by selective and additional licensing schemes, and safety certificate requirements enforced more consistently than a decade ago.

None of these changes make buy-to-let impossible, but together they mean a property that would have comfortably worked on 2012 or 2015 assumptions needs to be reassessed against 2026 numbers, not carried forward on old arithmetic.

Yield vs total return

Gross yield, the annual rent as a percentage of the property's value, is the number most often quoted in headlines and property listings, but it tells you almost nothing about whether a property is actually a good investment once real costs are included. Net yield, which deducts running costs such as management fees, insurance, maintenance, voids and compliance costs, gives a more honest operating picture, and net yield after mortgage interest (sometimes called cash-on-cash return) tells you how hard your actual invested cash is working. Our rental yield calculator guide works through the full calculation with worked examples showing how much these figures can differ on the same property.

Total return goes a step further again, adding capital growth (or loss) on top of the income return. A property with a modest 4% net yield in a strong-growth area can outperform, over several years, a property with an 8% gross yield in a declining area with long void periods and rising costs. Buy-to-let has historically delivered much of its long-run return through capital growth rather than income alone, which is worth remembering when a headline yield figure looks unusually attractive: a very high yield is often a sign of a higher-risk area, an HMO with heavier management demands, or both, rather than simply a better deal.

This is also where leverage cuts both ways. Borrowing amplifies your return on the cash you put in when things go well, since you are earning a return on the whole property value while only tying up a deposit's worth of your own money. It amplifies losses just as sharply if rates rise, the property sits empty, or values fall, which is exactly the scenario a higher-rate environment makes more likely than it was when rates were consistently low.

Who it still suits

Buy-to-let in 2026 tends to work best for landlords who fit one or more of these patterns:

• Lower leverage, or cash buyers. With less or no mortgage interest, the Section 24 mismatch and rate risk both shrink considerably, since there is less finance cost to be squeezed by either.
• Basic rate taxpayers, for whom Section 24's 20% credit broadly offsets the 20% tax rate, keeping the change close to neutral rather than eroding real cash profit the way it does for higher rate taxpayers.
• Landlords targeting total return, not just yield, buying in areas with reasonable growth prospects and realistic rent, rather than chasing the highest headline yield regardless of area quality or management burden.
• Landlords who treat it as a business, not a hands-off punt. Careful cost tracking, proactive compliance, and realistic void and maintenance assumptions are what separate a property that is genuinely worth it from one that only looks worth it until the first unexpected repair bill or void period arrives.
• Portfolio landlords with scale, who can spread management costs and void risk across several properties, and who may find a limited company structure worth exploring specifically to sidestep the Section 24 mismatch on new purchases, though incorporating existing property usually triggers its own tax costs.

It suits these landlords less well if you are highly leveraged, a higher or additional rate taxpayer holding property personally, buying purely for a high headline yield without checking net numbers, or expecting the light-touch management and near-automatic capital growth that characterised parts of the 2010s market.

Run the numbers

A worked example shows how these factors interact on a real property, rather than in the abstract.

A landlord buys a £220,000 terraced house with a 25% deposit (£55,000) and a £165,000 interest-only mortgage at 5.0%, letting it for £1,100 a month (£13,200 a year).

• Gross yield: £13,200 / £220,000 = 6.0%.
• Annual running costs (management fee, insurance, maintenance allowance, compliance costs, void allowance): roughly £2,800.
• Net operating income: £13,200 - £2,800 = £10,400. Net yield: £10,400 / £220,000 = 4.7%.
• Mortgage interest: £165,000 x 5.0% = £8,250 a year.
• Net income after finance costs: £10,400 - £8,250 = £2,150.
• Cash-on-cash return: £2,150 / £55,000 deposit = 3.9%.

Before tax, this property clears a modest but real cash surplus. The tax position then depends heavily on the owner's band: a basic rate taxpayer keeps most of that £2,150 after the Section 24 mechanism, while a higher rate taxpayer, taxed on the full £10,400 profit at 40% with only a 20% credit on the £8,250 interest, could see the tax bill absorb a large share of the actual cash generated, potentially leaving very little or even a small shortfall in a bad year with a void period or unexpected repair. Our buy-to-let costs checklist sets out the fuller list of one-off and recurring costs worth building into a calculation like this before you buy, rather than after.

Running this kind of calculation on a specific property, with your actual deposit, rate and tax band rather than an average figure, is the only reliable way to answer "is buy-to-let worth it" for your situation. The national answer has genuinely got harder since the 2010s; the answer for a specific, well-chosen property with realistic numbers behind it has not necessarily changed nearly as much.

How Property HQ helps

Property HQ pulls together rent, running costs and mortgage interest from your connected bank feeds, so you can see net yield and cash-on-cash return for each property, and across your whole portfolio, without rebuilding the calculation from scratch every time rates or costs move.

Disclaimer

This guide is general information for UK landlords, not financial, tax or legal advice. Property values, rents, tax rules and lettings law change over time. Check GOV.UK, HMRC or a qualified adviser before making an investment decision.