So you’ve decided a hybrid structure makes sense: keep your existing rental properties in your own name and buy new ones through a limited company (SPV). That’s usually the right call for a growing portfolio.
Now comes the part where landlords trip up. Running a hybrid buy-to-let portfolio well is a matter of practical mechanics, and almost every common mistake is avoidable.
Personal vs Limited Company Buy-to-Let: The Tax Numbers
Let’s make this concrete.
Say you’re a higher-rate taxpayer buying a £200,000 buy-to-let. It brings in £12,000 a year in rent, and you’re paying £5,500 in mortgage interest.
If you hold it personally:
You pay 40% tax on the full £12,000 rental income, which comes to £4,800. You then claw back a 20% credit on the mortgage interest (£1,100). Your tax bill lands at £3,700, leaving you with about £2,800 in your pocket.
If the limited company holds it:
The mortgage interest comes off before tax. You pay 19% corporation tax on £6,500 of profit, just £1,235, leaving £5,265 sitting in the company.
That’s roughly £2,400 more retained per property, every year. One property, a nice bonus. Ten properties across a growth plan, and the compounding gets hard to ignore.
A couple of things worth knowing before you get too excited about that number:
The 19% small profits rate is shared across companies under common control. If you’re already running other SPVs, check where marginal relief or the 25% main rate kicks in before relying on this figure.
The £5,265 also stays inside the company. Draw it out as a dividend and higher-rate dividend tax at 33.75% (after the dividend allowance) brings your net down to roughly £3,650. Still ahead of the personal route, but a smaller gap than the headline suggests. The full advantage only holds if the profit stays in the company to fund deposits, pay down debt, or reinvest.
Funding Your SPV with a Director’s Loan
Here’s the catch: a brand-new company has no money, so it can’t fund its own deposits. You have to get your personal cash in somehow, and the mechanism for that is a director’s loan.
It works like this. You lend your own money to the company on commercial terms. Later, the company pays you back, and because it’s a return of capital, you receive it tax-free. If you charge the company interest, that interest is a deductible expense for the company, though you’ll declare it as personal income on your tax return.
One rule above all: document every transfer. HMRC pays close attention to director’s loan accounts, and a clear paper trail keeps a clean arrangement looking clean.
SPV Mortgages: What Lenders Look For in Hybrid Borrowers
Buy-to-let lenders see mixed structures all the time and fully expect them. What they actually scrutinise:
Your whole portfolio. Most lenders stress-test all your personal buy-to-lets together, typically at 145% interest cover (ICR) for higher-rate taxpayers and limited company borrowing. Basic-rate personal borrowers are usually stress-tested at a lower 125%.
Personal guarantees. You’ll sign one on every SPV mortgage. It’s standard across the market, so save your energy for negotiating rate and fees.
A clean company. One SIC code (68209), zero trading activity, and tidy related-party transactions. Lenders want a company that does one thing.
Your track record. Two or more years as a personal landlord meaningfully improves the rates you’ll be offered on your first SPV mortgage.
Expect to pay a premium for limited company borrowing. SPV mortgage rates ran roughly 0.3 to 0.8% above personal buy-to-let rates in 2026, though it’s worth checking current lender rate sheets before making decisions, as this band moves.
When to Add a Holding Company Above Your SPVs
At some point, usually around three or more SPVs and often split by region or by strategy (HMOs in one, single-lets in another), it’s worth putting a holding company on top. Three reasons:
- Group relief. Losses in one company can offset profits in another.
- SDLT group relief. You can transfer properties between group companies with 75% or more common ownership without triggering stamp duty. This is often the single biggest financial reason to formalise the group structure.
- Simpler succession planning. You pass on shares in one holding company instead of juggling several separate ones.
Below three SPVs, a holding company is overkill. Above that, it’s standard practice in any serious property portfolio.
Buy-to-Let Portfolio Admin: The Discipline That Makes It Work
All of the above depends on tight admin. The habits that matter:
- Keep separate bank accounts, separate ledgers, and separate cards for the company at all times
- Pay every personal expense from your personal account, without exception
- File company accounts on time, as late filings quietly damage future mortgage applications
- Reconcile your director’s loan account quarterly
The hybrid model pays off when your operational discipline matches the strategic logic. Set it up properly on day one and the structure largely runs itself.
Talk to Us About Your Portfolio Structure
Setting up a hybrid portfolio properly, from incorporating a clean SPV to documenting director’s loans and keeping lenders happy, is far easier with the right support from day one. If you’re a landlord in Coventry or anywhere across Warwickshire and you’re weighing up a limited company structure, get in touch with us today for a portfolio structure review.
Contact us now to book your consultation.
