Is buy-to-let still viable? Here's what's actually changed.

If you're weighing up a rental property in 2026, the honest answer is: it depends less on "is buy-to-let dead" and more on whether you've actually run the numbers since May.

The rules changed under your feet in May

Since 1 May 2026, Section 21 — the "no-fault" eviction notice — no longer exists. If you want possession of your property back, you now need a Section 8 ground: selling up, moving in yourself, rent arrears, and so on. That's not a minor tweak. It means every tenancy you sign now needs to be entered into with the assumption that ending it isn't a formality — it's a legal process with evidence requirements.

If you've got an existing tenant and were relying on an old Section 21 notice, there's a hard deadline: any notice served before 1 May had to go to court by 31 July 2026, or it's dead.

The numbers still work — if you do the maths properly

Gross yields nationally are sitting around 6–7%, with the North East and Scotland often topping 8–9%, and London typically closer to 5%. That sounds healthy, but gross yield isn't what pays your mortgage. Lenders are still stress-testing at notional rates around 5.5%, wanting rental income to cover 125–145% of the mortgage payment — so your actual borrowing power is tighter than the advertised rate suggests.

"A property advertising an 8% gross yield can easily drop to 3–4% net once you've accounted for maintenance, void periods, letting agent fees, insurance, and compliance costs."

If you're not modelling net income before you buy, you're not really doing the sums.

Tax still bites the same way it has since 2016

If you own personally rather than through a limited company, mortgage interest still can't be deducted from rental income before tax — you get a 20% tax credit on finance costs instead. If you're a higher-rate taxpayer, that's the single biggest number to run before anything else, because it can quietly turn a "profitable" property into a loss-maker on paper.

So — worth it or not?

Buy-to-let hasn't stopped being viable. What's stopped being viable is treating it as a set-and-forget investment. The landlords still doing well out of it are the ones who:

Model net yield, not the headline gross figure
Understand Section 8 grounds before they need them, not after
Have already worked out their tax position — personal name vs limited company — properly
Budget realistically for voids, compliance, and maintenance rather than assuming everything goes to plan

If that sounds like more admin than it used to be — it is. But for landlords willing to run it properly rather than casually, the fundamentals — strong tenant demand, a genuine housing shortage, yields still in healthy territory outside London — haven't gone away.

Run the net numbers before the gross ones impress you.