Plenty of people ask us for buy to let investment advice in the UK after they’ve already fallen for a property. That’s usually the wrong way round. The house you love and the house that makes money aren’t always the same thing, and the sooner you separate the two, the better your first year as a landlord will go.
So let’s talk about what actually matters before you sign anything.
What buy to let investment advice UK landlords really need
Forget the glossy brochures for a minute. The core of a good rental is simple: does the rent comfortably cover the mortgage, running costs and the odd bad month? If it doesn’t, no amount of area “potential” will save you.
A rough yardstick people use is gross yield – annual rent divided by the purchase price. A £180,000 flat renting at £900 a month gives you £10,800 a year, so about 6% gross. That figure looks fine until you strip out the real costs:
- Mortgage interest (which has climbed a lot since 2021)
- Letting agent fees, usually 8-12% if you use one
- Insurance, safety certificates and repairs
- Void periods when nobody’s paying rent
- An allowance for the boiler that always dies in December
Once you knock those off, that 6% can drop closer to 3-4% net. Still workable – but you need to know the real number, not the headline one.
The tax bit people forget
Since the Section 24 changes phased in, individual landlords can no longer deduct mortgage interest as a straightforward expense. Instead you get a 20% tax credit. For higher-rate taxpayers that’s made a real dent, and it’s one reason some buyers now purchase through a limited company. That route has its own costs and admin, and it isn’t automatically better. It depends on your income, how many properties you hold, and whether you plan to draw the profit or reinvest it.
There’s also Stamp Duty. Second properties carry a surcharge, so budget for that up front rather than getting caught out at completion. HMRC’s own guidance on renting out a property is a sensible place to check the current rules before you commit.
Location beats luck
A strong rental area usually has a few boring-but-brilliant features: steady tenant demand, decent transport, employers nearby, and prices that haven’t already run away. University cities, commuter towns and regeneration zones often tick these boxes. The flashy postcode with a 3% yield rarely does.
We spend a lot of time on this with clients because the sourcing decision shapes everything after it. If you’d like a sense of how we approach it, our page on UK property investment and sourcing walks through how we match properties to a genuine strategy rather than a hunch.
Financing it sensibly
Most buy to let mortgages are interest-only and need a bigger deposit than a residential loan – typically 25% or more. Lenders also apply a “stress test”, checking the rent covers the mortgage at a higher notional rate. That protects you as much as them. If a deal only stacks up at today’s cheapest rate, it’s fragile.
Keep an eye on the wider picture too. The global property investment market moves with interest rates, and the Bank of England’s decisions feed straight through to your monthly payment when you remortgage.
Common mistakes worth dodging
- Underbudgeting for maintenance. Set aside a few hundred pounds a year per property. You’ll use it.
- Skipping proper referencing. A rushed tenant choice costs far more than a short void.
- Ignoring the compliance load. Gas safety, EPC ratings, deposit protection and the right-to-rent checks are all legal duties, not optional extras.
- Buying purely for capital growth. If the rent doesn’t cover the costs, you’re feeding the property every month and hoping.
None of this is meant to put you off. Buy to let can still be a solid, steady way to build income and long-term value – it just rewards the people who treat it like a business.
One last thing: this is general guidance, not personal financial or tax advice. Your situation is yours alone, and the right structure for a neighbour might be wrong for you.
If you’d like a candid conversation about your goals, your budget and whether a particular deal actually adds up, get in touch with the SS Global Wealth team. We’re happy to look at the numbers with you before you make a move.
