Buy-to-Let in 2026: Dead, Or Just Different?

The Question That Won't Die

"Is buy-to-let still a credible investment?" is the question that won't go away, no matter how many times the financial press declares the answer to be "no."

Since 2015, the case against BTL has been written and rewritten roughly every six months. Section 24 killed mortgage interest relief. The 3% stamp duty surcharge became a 5% surcharge in October 2024. The wear-and-tear allowance disappeared. The CGT allowance dropped from £12,300 to £3,000. EPC rules tightened, then loosened, then tightened again. The Renters' Rights Act ended Section 21. Mortgage rates doubled. And every quarter another think-tank publishes a report showing that landlords are leaving the market in record numbers.

All of that is true. And yet there are still over two million private landlords in the UK, the rental market is tighter than it has been in a generation, and people keep asking the question. So either two million people haven't read the news, or the headline answer is missing something.

The honest answer is the one most articles skip. Buy-to-let doesn't work the way it did in 2007. But it can still be a credible long-term wealth strategy. Whether it works for you comes down to three distinctions that almost no general guide draws cleanly: how you own it, how you fund it, and what you actually want it to do. Get those three right and the maths still works. Get any of them wrong and you're a landlord paying the Treasury for the privilege.

The Distinction Nobody Draws Clearly: Personal vs Limited Company

This is the single most important thing to understand about UK buy-to-let in 2026, and most generalist guides bury it three thousand words in or skip it entirely.

Section 24, phased in between 2017 and 2020, removed the ability for individual landlords to deduct mortgage interest from rental income before calculating tax. Instead, you get a flat 20% tax credit on the interest. If you're a basic-rate taxpayer that's roughly neutral, because 20% of the interest is what you'd have saved anyway. If you're a higher-rate or additional-rate taxpayer, it's brutal. You pay 40% or 45% tax on income that, economically, you never received.

A worked example makes this concrete. Imagine a higher-rate taxpayer with a £200,000 BTL mortgage at 5%, generating £12,000 a year in rent on a property the bank is charging £10,000 in interest on. Pre-2017, taxable profit was £2,000. Today, taxable profit is £12,000. Tax at 40% is £4,800. After the 20% credit on the £10,000 interest (£2,000), the bill is £2,800. The landlord receives £2,000 of real profit and pays £2,800 of tax. They are losing money before a single repair, void, or insurance claim hits the books.

That maths is why the "BTL is dead" headlines exist. For a higher-rate taxpayer holding a heavily mortgaged property in their personal name, it often is.

Section 24 does not apply to limited companies. A limited company pays corporation tax on its actual profit, after deducting mortgage interest as a normal business expense. The same property in a limited company structure has taxable profit of £2,000, corporation tax of around £380 (at the small profits rate of 19%, since profits are below £50,000), and net profit of roughly £1,620 inside the company.

That is not a small difference. That is the difference between a loss and a sensible return. It is the entire reason the BTL market has restructured around limited companies since 2017. The latest figures from Hamptons show that around three quarters of new BTL purchases in 2025 went into limited company structures, up from less than 20% a decade earlier.

The catch, because there is always a catch:

• Mortgage rates are higher on limited-company BTL products, typically 0.3 to 0.7 percentage points above personal BTL rates.
• Setup and ongoing costs. You need a SPV (special purpose vehicle) company, annual accounts, a Companies House filing, and usually an accountant. Budget £1,000 to £2,000 a year in compliance costs.
• Getting money out costs you. Profits inside the company belong to the company. To put them in your pocket you pay yourself a salary (subject to PAYE/NI) or take dividends (subject to dividend tax, with only the first £500 tax-free in 2026/27). The "double tax" people worry about is real, but mostly a problem if you're trying to extract every pound. If you're reinvesting profits to grow a portfolio, the company structure is enormously efficient.
• Transferring an existing personal property into a company is expensive. It's treated as a sale: stamp duty (including the 5% surcharge) is payable on the market value, and CGT is due on any gain since you bought it. Incorporation relief can defer the CGT in narrow cases (a genuine property business with significant activity), but for most accidental or single-property landlords it isn't available.

The headline rule that emerges from all of this: if you're a higher-rate taxpayer planning a mortgaged BTL purchase, the case for using a limited company is almost overwhelming. If you're a basic-rate taxpayer with one cash-bought property, personal ownership is usually simpler and roughly as efficient. The middle ground — basic-rate taxpayer with a mortgage, or higher-rate taxpayer planning to hold long-term and reinvest — is where the spreadsheet actually has to be built.

The Second Distinction: Cash vs Mortgaged

The other distinction the headline question hides is whether you're funding the purchase in cash or with a mortgage. These are economically different strategies wearing the same name.

Cash-bought BTL

A cash-bought BTL is, fundamentally, a yield play. You buy a property outright, collect rent, pay tax on the rent, and own an asset that should roughly track inflation over time.

The yield is the headline number. A property bought for £200,000 generating £12,000 a year in rent (£1,000/month) is a 6% gross yield. After agency fees (typically 10-12% if managed), insurance, maintenance reserves (rule of thumb: 1% of property value per year), void periods (assume 1 month a year), and ground rent or service charge if leasehold, a 6% gross yield typically lands around 3.5-4.5% net before tax. After basic-rate tax, that's roughly 2.8-3.6% net-net. After higher-rate tax, around 2.1-2.7%.

Compare that to a savings account paying 4% or a stocks-and-shares ISA expected to return 5% real over the long term, and the case for cash-bought BTL collapses on the yield alone. It only makes sense if you're getting something the alternatives don't offer:

• Inflation hedging. Rents tend to rise with inflation, and so does the underlying capital value over long horizons. Cash deposits do not, and bonds famously do not. If your worry is a decade of sticky inflation, BTL has a structural advantage over fixed-rate alternatives.
• Capital growth. A 6% yield with 2-3% annual capital growth gives you a total return that's competitive with equity markets, with much lower (but not zero) volatility. The total-return frame is where cash BTL stops looking obviously inferior to an ISA.
• Leverage optionality. A cash-bought property can later be refinanced. If yields are unattractive at purchase but capital values rise, you can pull equity out later and recycle it. Cash gives you the option to use leverage later; mortgage debt removes that option.

Mortgaged BTL

A mortgaged BTL is not a yield play. It is a leveraged bet on capital growth, with rental income covering the carrying costs while you wait.

The maths is brutal in the short term and powerful in the long term. Suppose you put £75,000 down on a £300,000 property, with a £225,000 mortgage at 5.5%. Rent is £18,000 a year. Interest is around £12,400. Tax (assuming limited company at 19% on £5,600 of accounting profit) is around £1,070. After agency fees, maintenance, void, and insurance, you might be cash-flow neutral or slightly negative in year one. In rough terms, the property has to pay for itself, and that's it.

So why bother? Because if the property rises by 3% a year, that's £9,000 of capital gain on your £75,000 deposit — a 12% gross return on your equity, before tax, before transaction costs, before voids. If it rises 5%, you've made 20% on your money. That is the leveraged maths that built the original BTL boom in the late 1990s and early 2000s, and it is the only reason anyone takes on a 75% LTV BTL mortgage today.

The risks are equally leveraged, in both directions. A flat decade of house prices (which is not historically unusual) gives you a decade of carry costs and zero return. A 10% drop in property prices wipes out 40% of your deposit. A jump in mortgage rates at remortgage time can flip you from break-even to bleeding cash. Mortgaged BTL is not a low-volatility asset. It feels low-volatility because UK landlords don't get a daily share price quote on their property, but the underlying risk is large.

The headline rule: cash BTL is a yield-plus-inflation-hedge strategy that competes with bonds and dividend equities. Mortgaged BTL is a leveraged capital-growth strategy that competes with concentrated equity positions. They should not be analysed with the same spreadsheet, and the headline question doesn't have a single answer because these aren't the same product.

The Third Distinction: Yield vs Growth, North vs South

The final distinction is geographic, and it's the one most personal-finance writers — usually based in London — get wrong.

The UK rental market is two markets in one country. There is a yield market (broadly the North of England, parts of Wales, parts of Scotland, some Midlands cities) where gross yields of 6-9% are achievable but capital growth has been slow for years. And there is a growth market (London and the South East) where gross yields of 3-5% are typical but historical capital growth has been much higher.

Pick the wrong one for your strategy and the property may not "work" no matter what tax wrapper you wrap it in.

If you're cash-buying for income, you almost certainly want to be in the yield market. A £150,000 property in Sunderland or Hull generating £900/month is a fundamentally different proposition to a £450,000 flat in Hackney generating £1,800/month. The Sunderland property delivers a 7.2% gross yield; the Hackney flat delivers 4.8%. Net of all costs the gap is even wider because the Hackney flat will likely carry £3,000+ in annual service charges.

If you're mortgaging for growth, the yield market doesn't help you as much, because rental coverage on a Northern terraced house is rarely the binding constraint. The binding constraint is whether capital values will move. Historically, London has done more capital lifting than anywhere else, but past performance and so on — and London yields have compressed to the point where the rental cash flow barely services the mortgage. Many Southern BTL purchases since 2022 have been negative-yielding before tax.

There is a strong case, increasingly made by serious investors, that the most efficient BTL strategy in 2026 is a Northern yield play in a limited company — high cash flow, manageable mortgage coverage, Section 24 sidestepped by the corporate wrapper, lower entry prices, less stamp duty in absolute terms. The London-flat-as-pension model that defined the 2000s no longer pencils out on the spreadsheet for most buyers.

What You're Actually Up Against: The Other Costs

Section 24, stamp duty, and mortgage rates get the headlines. But the rest of the BTL cost stack has quietly thickened.

• Stamp duty surcharge. From 31 October 2024 the surcharge on additional dwellings rose from 3% to 5%, on top of the standard rates. A £300,000 BTL purchase incurs around £20,000 in stamp duty before any other fees.
• CGT on disposal. Residential property gains are taxed at 18% (basic rate) or 24% (higher rate) in 2026/27. The annual exempt amount is £3,000 — down from £12,300 in 2022/23. A £100,000 gain on a personally-held BTL is around £23,280 in tax. In a limited company there's no separate CGT; gains are taxed as corporation tax profit, currently 19% or 25% depending on the company's overall profit level, with no indexation allowance since 2017.
• EPC rules. All new tenancies require an EPC rating of E or better. The previous government's plan to raise this to C by 2025/2028 was scrapped, then reinstated by the current government. The current direction of travel is a C minimum for new tenancies from 2028 and all tenancies from 2030, though as with all things energy, the exact cut-off has shifted multiple times. Practical implication: properties below C will need anywhere from a few hundred to several thousand pounds in upgrades (insulation, boiler, glazing) before the rule bites, and pricing on sub-C properties is starting to reflect that.
• Renters' Rights Act. Royal Assent received in 2025, with the main provisions phasing in through 2026. Section 21 "no-fault" evictions are gone. All assured shorthold tenancies have been converted into rolling periodic tenancies. Rent increases are capped to once a year and can be challenged at tribunal. None of this makes BTL unworkable — most established landlords were already managing their tenancies reasonably — but it does reduce flexibility and slightly increases the cost of a problem tenant.
• HMO licensing, selective licensing, and council fees. A growing patchwork of local schemes adds £500-£1,500 of one-off licensing costs in many urban areas, renewable every five years.
• Insurance, gas safety, electrical safety, deposit protection, right-to-rent checks. Each modest in isolation. Collectively, easily £400-£600 a year of fixed compliance cost per property.

None of these are deal-breakers individually. Together, they shift the breakeven of a small BTL by perhaps £1,500-£2,500 a year compared to a decade ago. That's the cost of doing business now, and it needs to be in your model from day one rather than treated as an unpleasant surprise three years in.

The Opportunity Cost: ISA, SIPP, BTL

If you're considering buy-to-let as a wealth-building strategy, the comparison is almost never against a savings account. It's against your unused ISA and SIPP allowance.

Per year, a couple has access to:

• £40,000 of ISA allowance (£20,000 each).
• £120,000 of pension annual allowance (£60,000 each, assuming earned income to match).

That's £160,000 a year of tax-advantaged contribution capacity for a couple. Inside those wrappers, you pay zero income tax on dividends, zero CGT on gains, and (for pensions) get income tax relief on contributions at your marginal rate.

A £75,000 deposit on a BTL is, in opportunity-cost terms, four years of personal ISA allowance, or roughly one year of personal pension contributions for a higher earner. The question isn't "would the BTL make money?" — it's "would it make more money than the same capital invested in equities inside an ISA or pension, after all costs and tax?"

For a higher-rate taxpayer holding a BTL personally, the answer is almost certainly no. The Section 24 maths is too punishing. For the same taxpayer using a limited company BTL with growth-friendly geography, the answer is genuinely uncertain — and that's why people still do it.

There's also a diversification argument that matters more than the spreadsheet usually shows. A maxed-out ISA and pension is, for most British savers, 100% in financial assets, often heavily concentrated in global equities. Adding UK residential property adds an asset class that's lowly correlated with global equity markets, inflation-hedged, and (for those who care) tangible. That's not nothing. The right question isn't "ISA or BTL?" but "have I maxed the tax wrappers, and would adding a property tilt my overall portfolio toward something more resilient?"

When Buy-to-Let Is Still Worth It

A few situations where the answer really is yes, with the distinctions stacked the right way:

• You're a basic-rate taxpayer buying with cash in a yield-rich Northern or Midlands market, holding personally. Section 24 barely touches you. Yields are real. The maths is straightforward and competitive.
• You're a higher-rate taxpayer buying through a limited company, planning to reinvest profits for 10+ years. The corporate wrapper sidesteps Section 24, profits compound at 19-25% corporation tax instead of 40-45%, and you defer the dividend tax problem until you actually need the money.
• You're an accidental landlord with a property you'd otherwise sell into a soft market. The transaction costs of selling and rebuying later are large. Letting through a soft patch, especially with a small mortgage, often beats crystallising a loss.
• You have substantial cash earning sub-inflation returns and have already maxed ISAs and pensions. BTL is one of a small number of tax-shielded long-term inflation hedges available to UK retail investors outside the wrappers.
• You're building a portfolio, not buying a single flat. The fixed costs of a limited company structure, an accountant, and a property manager scale much better across 3-5 properties than across one. Sub-scale BTL is the worst-of-both-worlds version.

When It Really Isn't

• You're a higher-rate taxpayer planning a single mortgaged BTL in your personal name. This is the configuration that gets called "dead" in the headlines, and it usually deserves to. Section 24 plus 5% stamp duty plus current mortgage rates is genuinely difficult to make work.
• You haven't yet maxed your ISA or pension allowances. Tax-advantaged investing has to be the first lever. The arithmetic of tax-free compounding inside an ISA or SIPP is hard to beat with leverage and lots of hassle.
• You don't want to be a landlord. This sounds flippant. It isn't. BTL is a small business, not a passive investment. Boilers break at 11pm. Tenants stop paying. Section 21 is gone, so problem tenancies last longer. If the operational reality doesn't appeal, the spreadsheet rarely compensates.
• You'd be over-concentrated in property. If 80% of your net worth is already your home, adding a BTL leaves you exposed to a single asset class, a single country, and often a single region. The diversification argument runs both ways.
• You're buying a flat with a short lease, a high service charge, or in a building with cladding uncertainty. Each of these can destroy the maths on its own. Combined, they're a guaranteed loss.

The Honest Summary

Buy-to-let isn't dead. The 2007 version of it is. The version that involves a higher-rate taxpayer, a 75% LTV mortgage, a property held in their own name, in a flat market, with Section 24 chewing through their profit — that version is genuinely uncompetitive with a tracker fund inside an ISA, and the headlines are right about that.

The version that involves a Northern yield property held in a limited company by an investor who is reinvesting rather than extracting, who has already maxed their ISA and pension, who has the patience for a 10-15 year hold, and who has actually run the spreadsheet on mortgage interest, stamp duty, EPC remediation, and dividend tax — that version still works. It's just harder, more administrative, and offers less of a tax advantage than it used to.

The distinction the headlines hide is that the question is really three questions in one:

1. How are you owning it? Personal for cash and basic-rate; limited company for mortgaged and higher-rate.
2. How are you funding it? Cash for yield and inflation hedging; mortgage for leveraged growth, and only if you can stomach the volatility.
3. What's the property for? Yield (North, cash-bought) or growth (selective Southern markets, mortgaged). Don't confuse the two.

Answer all three the same way, and the case for BTL still holds. Answer any of them inconsistently, and you're paying tax for the privilege of being a landlord.

How Scenarios Helps

Scenarios doesn't model the inside of a buy-to-let. The Section 24 maths, the mortgage interest, the voids, the EPC remediation, the CGT bill on disposal — all of that lives in a property spreadsheet, and a property spreadsheet is the right tool for it.

What Scenarios does is the part the property spreadsheet can't reach: what the cash flows do to the rest of your plan. You can enter the net rental income the property is expected to throw off each year, and you can enter a planned future lump sum for the sale proceeds in the year you expect to dispose of it. Both then flow through the same engine that models your ISA, your pension, and your other income across 1,000 simulated market paths.

That's where the real comparison happens. Once you've worked out on a spreadsheet what the BTL is likely to net you, dropping those numbers into Scenarios shows you what they actually do to the year you can stop working, alongside the alternative of putting the same deposit into an ISA or pension instead.

You can model your rental income and planned lump sums alongside your wider plan for free and see whether the property genuinely earns its place in your portfolio, or whether the same money does more work somewhere else.