Published 2026-07-19 · Contractor Mortgage Guide · Written and reviewed by Phillip Wakeling-Smith (CeMAP)

Buy-to-let for contractors: personal name, SPV, and how day-rate income actually helps

Q: Can I get a buy-to-let mortgage as a day-rate contractor?

Yes — BTL is often easier than residential for contractors because the rent does the heavy lifting. The contractor-specific work is passing the minimum personal-income test and, if needed, using day-rate income for top-slicing at a lender that accepts it.

Q: Should I buy through my existing limited company?

Almost never through your trading company. If a company structure suits your tax position, the standard route is a separate SPV set up for property. Take accountancy advice on whether SPV vs personal name wins for your tax band.

Quick answer: Buy-to-let lending is assessed primarily on the rent, not your salary — which makes it more contractor-friendly than residential lending in one way (no day-rate annualisation argument) and less in another (many lenders still apply a personal minimum-income test that contractors must evidence). The big structural decision is personal name vs SPV limited company: since mortgage-interest tax relief was restricted for personally-held property, most higher-rate-taxpaying contractors buying new BTL property use an SPV — but the mortgage market for SPVs is smaller and pricing differs. Get the structure right before the property, not after.

How BTL affordability actually works

Lenders test whether the expected rent covers the mortgage with headroom:

Interest coverage ratio (ICR): typically the rent must cover 125% of the interest for basic-rate taxpayers / limited companies, and around 145% for higher-rate taxpayers — calculated at a stressed interest rate, not your pay rate.
Minimum personal income: many (not all) lenders want to see roughly £20,000–£25,000 of personal income on top, and this is where contractor income-evidencing comes back in: day-rate contracts, umbrella payslips or SA302s, exactly as on the residential side — see how lenders read a day rate.
Top-slicing: where the rent alone doesn't quite pass the ICR, some lenders let surplus personal income make up the difference. A strong day rate is genuinely useful here — but only at lenders whose criteria accept contract income for top-slicing, which is the same lender-by-lender lottery as everything else in this market.

Personal name vs SPV limited company

Personal name: simpler, wider lender choice, often cheaper rates — but mortgage interest only attracts a basic-rate tax credit, which hurts higher-rate taxpayers, and the rent stacks on top of your contracting income.

SPV (special purpose vehicle): a limited company that exists to hold property (usually SIC codes 68100/68209). Interest is a deductible business expense, profits face corporation tax, and you choose how to extract them. The trade-offs: fewer lenders, typically higher rates and fees, personal guarantees required, and accountancy costs.

Two contractor-specific wrinkles:

Don't buy property inside your trading company. Lenders and accountants alike want the SPV separate from the company that invoices your clients — mixing them narrows your mortgage options and muddies both businesses.
Moving existing personally-held property into an SPV is a sale, with stamp duty and possibly capital gains tax. The structure decision mostly matters for new purchases.

Which side wins depends on your tax band, whether you're retaining profits in your trading company, and your exit plans — this is genuinely a case for coordinated mortgage and accountancy advice, not a blog answer.

What lenders will ask a contractor for

Proof of the minimum-income test: current contract, bank statements, SA302s/accounts depending on how you operate — the same evidence split as residential (see the contract-type checker).
A realistic rent figure — the valuer's rental assessment decides the ICR maths, not the agent's optimistic listing.
Deposit: BTL typically needs 25% (some lenders 20% at a price).
For SPVs: company documents, and personal guarantees from directors.

Before you commit

Run the residential side first if you're keeping your own home mortgage — a new BTL commitment appears in your affordability picture. And if the plan is "rent out my current home and buy another", that's consent-to-let or let-to-buy territory, which works differently from a clean BTL purchase — worth a conversation before restructuring anything.

FAQ

Can I get a buy-to-let mortgage as a day-rate contractor?

Yes — BTL is often easier than residential for contractors because the rent does the heavy lifting. The contractor-specific work is passing the minimum personal-income test and, if needed, using day-rate income for top-slicing at a lender that accepts it.

Should I buy through my existing limited company?

Almost never through your trading company. If a company structure suits your tax position, the standard route is a separate SPV set up for property. Take accountancy advice on whether SPV vs personal name wins for your tax band.

Do BTL lenders annualise my day rate like residential lenders do?

Only where personal income actually matters — the minimum-income test and top-slicing. For those, the same contract-based assessment logic applies, and the same lender-to-lender variation. The core affordability test remains the rental coverage calculation.

What deposit do I need for a contractor buy-to-let?

Plan on 25% of the property value. Some lenders go to 80% LTV with pricing to match. SPV purchases sit in the same range but with a smaller lender pool.

Does IR35 status affect a BTL application?

Indirectly — it changes how your personal income is evidenced (umbrella payslips vs company accounts), which feeds the minimum-income and top-slicing tests. See IR35 and your mortgage.