Buy to Let in 2026: Is It Still Worth It?

For as long as I can remember, property was the answer. It did not matter what the question was. How do I build wealth? Buy property. What should I do with my savings? Buy property. My uncle, my dad’s mates down the pub, the bloke at work who “knew a thing or two about money”. They all said the same thing. Bricks and mortar, lad. Can’t go wrong.

And for a long time, they were right. Property in the UK went on one of the most extraordinary runs in modern financial history. People who bought houses in the 1990s and early 2000s, leveraged to the hilt, made life-changing money. Some of them barely understood what a mortgage was. They just bought, held, and watched the value triple.

I chose a different path. I went with index funds. And I want to explain why, because the buy-to-let landscape in 2026 looks nothing like the golden era your parents remember.

The old maths

The buy-to-let playbook was brutally simple. Buy a property for £100,000. Put down 25%. Borrow the rest at 3%. Charge rent that covers the mortgage and then some. Watch the property value climb 5-7% a year. Remortgage, pull out equity, buy another one. Repeat until rich.

The leverage made it magic. If you put £25,000 down on a £100,000 property and it went up 10% to £110,000, your £25,000 deposit had effectively doubled in value. You made a £10,000 gain on a £25,000 outlay. That is a 40% return. Try getting that from a savings account.

For decades, this worked. Mortgage rates were low, regulation was light, and UK house prices went in one direction. The people who loaded up on property in that era were not financial geniuses. They were lucky with timing. There is a difference.

What changed

Between 2016 and 2025, the government systematically dismantled the tax advantages that made leveraged buy-to-let so profitable.

Section 24 (the mortgage interest tax change). Before April 2017, landlords could deduct their full mortgage interest payments from rental income before calculating tax. If you earned £12,000 in rent and paid £8,000 in mortgage interest, you were taxed on £4,000. From April 2020, you can only claim a basic rate (20%) tax credit on mortgage interest. If you are a higher rate taxpayer, this is devastating. You are now taxed on the full £12,000 of rental income, with only a 20% credit applied afterwards. For some landlords, this turned a profit into a loss on paper, while still owing tax.

The 3% stamp duty surcharge. Since April 2016, anyone buying an additional residential property pays an extra 3% in stamp duty on top of the standard rates. On a £200,000 property, that is an extra £6,000 before you have even picked up the keys.

EPC requirements. The government has been tightening energy efficiency rules for rental properties. From 2025, new tenancies require a minimum EPC rating of C. Upgrading an older property to meet this standard can cost £5,000 to £15,000, depending on the work needed.

Higher mortgage rates. In 2021, you could get a buy-to-let mortgage at 2.5%. In 2026, you are looking at 5-6% for a five-year fix. On a £150,000 mortgage, that is the difference between £530 and £870 a month in interest alone.

Stress tests. Lenders now stress-test buy-to-let applications at much higher rates, typically 2% above the product rate. Rental income usually needs to cover 125-145% of the mortgage payment at the stressed rate. This makes it harder to borrow, especially on tighter yields.

The 2026 maths: a worked example

Let me run the numbers on a typical buy-to-let purchase today.

Property price: £200,000 Deposit (25%): £50,000 Mortgage (75% LTV): £150,000 at 5.5% interest-only Monthly mortgage payment: £687 Monthly rent: £850 (a 5.1% gross yield, fairly typical outside London)

Annual rental income: £10,200 Annual mortgage interest: £8,250 Letting agent fees (10%): £1,020 Insurance, maintenance, void periods (estimate): £1,500 Total annual costs: £10,770

Annual cash flow: -£570

You are losing money every month. And that is before Section 24 hits. If you are a higher rate taxpayer, you owe tax on the full £10,200 of rental income, not just the profit after mortgage interest. The 20% tax credit on mortgage interest helps, but you are still paying significantly more tax than the headline numbers suggest.

The entire bet is on capital appreciation. If the property goes up 3% a year, that is £6,000 of paper gains on a £50,000 outlay, which looks good as a percentage return. But you are absorbing monthly losses, illiquidity, tenant risk, maintenance costs, and regulatory uncertainty to capture that gain.

When buy-to-let still works

I am not saying property is dead. But the situations where it makes financial sense have narrowed considerably.

Cash purchases. If you are buying without a mortgage, Section 24 does not matter and you have no interest costs eating into your yield. A property earning 5% net is a reasonable income stream if you do not need the capital elsewhere. The returns are modest, but they are predictable.

Low-cost areas with strong yields. Parts of the North East, North West, and Scotland still offer gross yields of 7-9%. At those levels, the maths can work even with a mortgage, provided you buy well and manage costs tightly.

HMOs (Houses in Multiple Occupation). Renting a property by the room rather than as a single let can dramatically increase yield. A four-bed house that might rent for £850 as a single let could bring in £1,600 to £2,000 as an HMO. The trade-off is more management, more regulation, and more tenant turnover. It is a business, not a passive investment.

Commercial property. This is a different asset class entirely, but worth mentioning. Commercial leases are typically longer, tenants cover more costs, and the tax treatment is different from residential. It is more complex and requires larger capital, but the yields can be significantly better.

When buy-to-let does not work

Leveraged purchases in expensive areas. If you are borrowing 75% to buy in London, the South East, or anywhere with gross yields below 5%, the numbers simply do not add up at current mortgage rates. You will be subsidising the property from your own pocket every month and hoping prices go up fast enough to compensate.

Single lets with tight margins. If your annual cash flow is within a few hundred pounds of breakeven, one boiler replacement, one void month, or one problematic tenant wipes out your year. The margin of safety is too thin.

Anyone expecting a return to 2% mortgage rates. Those days are likely gone for a generation. If your entire investment case depends on cheap debt, you are speculating, not investing.

Buy-to-let vs index funds

This is the comparison that rarely gets made honestly, because property people and stock market people tend to talk past each other.

A global index fund has returned an average of roughly 8-10% per year over the long term (before inflation). You can invest from £1. There are no tenants, no boilers, no letting agents, no stamp duty, no Section 24. If you hold it in an ISA, the returns are completely tax-free. You can sell any amount at any time and have the cash within days.

Property returns are harder to measure because they involve leverage, running costs, tax, and illiquidity. The headline “property doubles every 10 years” figure that gets thrown around ignores the costs of holding the asset. Once you factor in mortgage interest, maintenance, void periods, insurance, agent fees, and the tax changes since 2017, the net returns on a leveraged buy-to-let are often lower than a simple index fund in an ISA. Significantly lower in some cases.

The one advantage property has is forced leverage. You cannot borrow £150,000 to put into an index fund (nor should you). Leverage amplifies returns in both directions, and in a rising market, it is powerful. But in 2026, leverage is expensive, and the amplification is working against many landlords.

REITs: the middle ground

If you want property exposure without the hassle, Real Estate Investment Trusts (REITs) let you invest in property through the stock market. You can buy them in an ISA, they are liquid, and they pay regular dividends. The iShares UK Property ETF, for example, gives you diversified exposure to UK commercial property at a fraction of the cost and complexity of owning a physical asset.

REITs are not a perfect replacement. You do not get the leverage, and you do not have the same control. But for most people, they offer a cleaner, cheaper, and more tax-efficient way to include property in a portfolio.

My honest take

I could have bought rental properties. I chose not to. My entire financial independence journey was built on index funds inside ISAs and pensions. That decision was not based on ideology. It was based on maths, temperament, and a very honest assessment of how much hassle I was willing to tolerate.

I did not want to manage tenants. I did not want to deal with maintenance calls at 11pm. I did not want my wealth tied up in an illiquid asset that I could not sell quickly if I needed to. And when I ran the numbers properly, accounting for all costs and tax, the returns on a leveraged buy-to-let were not compelling enough to justify the extra work and risk.

That is my view. Yours might be different, and that is fine. Property can still work in the right circumstances with the right approach. But the days of “buy any house with a mortgage and get rich” are over. If you are going into buy-to-let in 2026, you need to treat it like a business, run the numbers ruthlessly, and accept that the tax and regulatory environment is working against you.

The people still making money from property are doing it professionally. If you are not prepared to do the same, your money is almost certainly better off in a low-cost global index fund.