Landlord Tax Changes: What's Confirmed, and What's Just Rumour

Every autumn the run-up to the Budget fills the landlord world with tax stories, and it's genuinely hard to tell which are real. Some are announced measures already on the way; others are leaks, kite-flying or pure speculation dressed up as fact. Reacting to the wrong one is expensive. So here's a calm separation of the two, as things stand before the Autumn Budget — what's actually been confirmed, what's still only rumour, and what a sensible landlord does with the difference. Treat every figure below as a pointer to check, not gospel: the definitive position is set out in the Budget itself and on GOV.UK afterwards.

What's actually confirmed

A handful of measures are already announced or in force — these are the ones worth planning around:

• A rise in the tax on rental income from April 2027. An announced measure adds a couple of percentage points to the rate applied to property income from the 2027/28 tax year, nudging landlords' effective rates up across the bands. The exact resulting figures should be confirmed against GOV.UK, but the direction — up — is set.
• Making Tax Digital for Income Tax is already live. It became mandatory for landlords with higher combined property and self-employment income from April 2026, with the threshold due to widen to bring in more landlords from April 2027 — meaning quarterly digital record-keeping, not one annual return.
• The restriction on mortgage-interest relief remains. The move years ago from deducting finance costs to a basic-rate tax credit still shapes every geared landlord's real tax bill — nothing new, but the backdrop to everything else.
• A council-tax surcharge on the most valuable homes. An announced measure adds a yearly surcharge on properties above around £2m from 2028 — narrow in scope, but confirmed rather than rumoured.
• Capital Gains Tax and Stamp Duty, as things stand, are unchanged in current plans — but "current plans" is exactly the sort of thing a Budget can revisit, so this is one to re-check on the day.

What's still just rumour

Plenty of the loudest stories are not policy at all. As things stand, these are speculation — interesting, worth watching, but not a basis for irreversible decisions:

• National Insurance on rental income. A widely-reported idea being modelled, not an announced measure — we covered why it's a leak, not law, in what the National Insurance rumours actually mean.
• Aligning Capital Gains Tax with income tax rates. A perennial rumour that resurfaces before most Budgets and has not, so far, materialised — for how CGT on a rental actually works today (the 18%/24% rates and the £3,000 allowance), see our Capital Gains Tax on rental property guide — though it's driving some landlords to weigh selling before the Budget to bank the gain. Treat that as a decision for your accountant, not a reaction to a headline. It's worth noting the industry is pushing back: the National Residential Landlords Association's pre-Budget submission has reportedly opposed equalising CGT with income tax and instead argued for indexing it to inflation, so landlords are taxed on real rather than inflationary gains. That's a lobbying proposal being argued over, not policy — nothing changes until 28 October.
• A "wealth tax" or new property levies. Floated in commentary, not government policy.

The tell is simple: if it's a specific, dated measure with published detail, treat it as real; if it's "officials are said to be considering," treat it as weather, not climate.

What it means for your margins

Put the confirmed items together and the picture is a steady squeeze rather than a single shock: slightly higher tax on rental income from 2027, more admin through Making Tax Digital, and the ongoing drag of restricted interest relief. None of it is a reason to panic-sell — though it's part of why many landlords have — but all of it makes the money you keep matter more. And that's the part rumours can't touch — because the biggest avoidable losses in a portfolio aren't tax at all.

What NOT to do

Don't restructure your ownership, incorporate, or sell a performing property on the strength of a rumour — those moves carry real, often permanent, tax consequences while the rumour may evaporate. Don't try to "get ahead" of a possible rent-income change by hiking a sitting tenant's rent, either: increases now run through a fixed once-a-year statutory process — see how to raise the rent properly and defend it if challenged, part of the rules already in force under the Renters' Rights Act. If a confirmed change genuinely affects you, the right response is advice from a qualified tax professional about your specific position — not a reaction to a headline.

What to do now

1. Know your real numbers — rent, costs and net profit per property — so you can model any confirmed change quickly.
2. Get ready for Making Tax Digital if it applies to you: keep clean, digital records year-round rather than a shoebox at year end.
3. Watch the Budget, not the leaks — note the date, read the actual announcement, verify on GOV.UK.
4. Protect the margin you control — a single compliance penalty or a stalled possession can cost more than a year of a tax rise, and unlike the tax, it's avoidable.
5. Take tax advice on big moves, not blog posts or forum threads.

The landlords who stay calm through Budget season are the ones who can tell confirmed from rumoured and who've already stripped the avoidable costs out of their portfolio. You can't vote on the tax rate — but you can make sure a missing certificate or a botched notice never adds to the bill.

General guidance for UK landlords, not legal or tax advice. This article separates announced measures from press speculation as at the time of writing; tax rates, thresholds, Budget measures and their timing are set by government, may change, and should be confirmed at GOV.UK after the Budget. Take advice from a qualified tax professional before making decisions about your properties.