Buy-to-let in 2026: is it still worth it?

For a long time, buy-to-let (BTL) looked like one of the safest investments around: you buy a flat or a house not to live in, but to rent out and earn an income from. But the era of cheap mortgages is over — rates are high, lenders are stricter, and the demands placed on landlords keep growing. Does that mean investing in rental property no longer pays? Not necessarily. It can still be a sound strategy — but only when the numbers genuinely stack up, not when you're simply hoping that "property always goes up".

This guide explains, in plain terms, when buy-to-let still works, how to calculate your return with a real worked example, the mistakes newcomers make, and what you need to know about the 2026 taxes and rules.

Where are we now?

Before you run the numbers on a specific property, it's worth understanding the market backdrop:

• Interest rates. The Bank of England base rate stood at 3.75% in June 2026, but lenders "stress" BTL loans at higher rates (often 6–8%) to make sure the rent would still cover the mortgage even if rates rise. Actual deals change constantly — the figures below are illustrative only.
• Rental demand. Still strong. Housing is in short supply, and rents in many towns and cities have risen sharply over the past few years.
• Costs. Insurance, repairs, agency fees and energy-efficiency requirements are squeezing margins more than they used to.
• Regulation. Mandatory EPC ratings, deposit protection, gas and electrical safety checks, and in some areas a landlord licence.

These days buy-to-let isn't an "easy money" strategy. It's a business — one that needs sums, know-how and a cash reserve.

When does buy-to-let still stack up?

A rental investment makes sense when several conditions are met at the same time:

• Gross yield ≥ 6–7% (annual rent ÷ purchase price).
• ICR (Interest Cover Ratio). The rent, after the agent's fees, has to cover the interest cover the lender requires — usually 125–145%, even if rates were to rise.
• LTV no higher than 70–75%. The less you borrow, the lower the risk.
• A reserve of 3–6 months' costs, in case the rent stops temporarily or you face an expensive repair.
• EPC of at least E, with a clear plan to reach C. Without the right rating, you may not be able to let the property in future.
• A good location. Only where there's steady demand — near transport links, universities, hospitals or employers.

How to work out your return

Start with the gross yield: annual rent divided by the purchase price, multiplied by 100. Then take off the real costs — the agency fee (10–15% + VAT), insurance, service charge/ground rent (if it's a flat), maintenance and a void reserve of at least one month — to arrive at the net return. Here's how that looks in practice:

The gross yield here is 7.2% (£18,000 ÷ £250,000), yet the real profit is only around £200 a month. The rent only has to drop by £100/month, or rates rise by 1%, and that profit can vanish. That's exactly why a reserve isn't a luxury but a necessity. Remember: the figures above are illustrative — interest rates and product fees (often several thousand pounds) change all the time.

Tax and structure: personally or through a company?

Tax can take a serious bite out of your final profit, so it's worth weighing up the structure in advance:

• Personal ownership. You can no longer deduct mortgage interest in full — instead you get a tax credit. For higher earners that's particularly unfavourable.
• Through a company (LTD). Interest can be deducted as an expense, but you face corporation tax, extra tax when you take the money out, and accountancy costs.

On top of that, buying an investment property means paying the +5% Stamp Duty surcharge (the bands become 5/7/10/15/17%), and selling at a profit triggers capital gains tax.

Financing and mortgages

• Interest-only. The most popular option — more monthly cashflow, but the debt itself doesn't reduce.
• Repayment. Less cashflow, but your equity gradually grows.
• Fixed rates (2–5 years). Offer stability, but can be more expensive.
• Variable rates. Flexibility and sometimes a lower cost, but more risk.

What kind of property should you buy?

• 1–2 bedroom flats — the widest demand, especially in cities; chosen by singles and couples alike.
• Houses with a garden — appealing to families, but they need more upkeep.
• New builds — modern, but service charges and ground rent can eat into the return.
• Strategic locations — near transport, hospitals, universities or business hubs, where the risk of the property sitting empty is lowest.

Landlord obligations and the 2026 rules

The UK rental market is heavily regulated, and 2026 brought some major changes:

• EPC. A privately rented property currently needs at least an E rating. It was confirmed (on 21 January 2026) that by 1 October 2030 all rented homes must reach a C rating. More in our EPC certificate guide.
• Renters' Rights Act 2025. From 1 May 2026 Section 21 "no-fault" evictions have been abolished, and fixed-term tenancies have been replaced by open-ended periodic ones. This changes a landlord's obligations — read about tenant rights and the new regime in our renters' rights article.
• The deposit must be registered with an official protection scheme.
• Safety: mandatory smoke and CO alarms, and valid gas and electrical safety checks.
• Right to Rent — checking your tenants is compulsory.
• Licensing: some councils require a landlord licence, and HMOs (homes with several unrelated tenants) come with even stricter rules.

Short lets (Airbnb) or traditional BTL?

Airbnb can bring in higher income in peak season and offers flexibility, but it takes far more work — cleaning, key handovers, constant communication with guests — and councils may impose restrictions. Traditional long-term BTL is steadier and needs less day-to-day attention, though the income is usually lower. The right choice comes down to how much time and energy you're prepared to put in.

How to reduce the risk

• Keep a repairs fund for the unexpected (a boiler or a roof, say).
• Plan for the property to sit empty for at least 1–2 months a year.
• Take out landlord insurance (building, public liability and sometimes loss of rent).
• Diversify — don't invest in just one town or one type of property.
• Have an exit strategy: refinance, sell, or switch to short lets.

Due diligence — 7 steps before you buy

• Market research. Check the real rents (not just listings, but "let agreed" deals too).
• Honest maths. Build three scenarios — optimistic, base case and pessimistic.
• Check the EPC, service charge and ground rent costs.
• Assess the lenders' criteria: ICR, LTV and stress rates.
• Check whether a landlord licence is required.
• Get a survey and budget for any repairs.
• Think through your exit strategy — what you'll do if rates rise further.

Is it right for you?

Yes, if you find a property with a gross yield of ≥6–7%, you have a reserve, you're prepared to follow the rules, and you're thinking long term — this is a long-haul investment, not quick money.

Better to wait, if you're using your last savings for the investment, you expect easy earnings without the work, or you don't have the time or appetite to deal with landlord responsibilities.

FAQ

Want to go deeper? Start with the full guides library — you'll find articles on Stamp Duty, EPC, renters' rights and the whole home-buying process.