Guide · 6 min read
What actually makes a limited company buy-to-let mortgage the best deal: rate versus fee trade-offs, ICR treatment, the lenders that lead the SPV market, and remortgage timing.
Written by Matt Lenzie · Published 10 June 2026
Advice from
Matt Lenzie · 25+ year career banker (Bank of Scotland, Lloyds Banking Group). £300m+ raised for property clients.
25+ year career banker (Bank of Scotland, Lloyds Banking Group). £300m+ raised for property clients.
The best limited company buy-to-let mortgage is the product that delivers the lowest true cost over the period you will actually hold it, after fees, at a loan size the stress test will actually grant. That is rarely the deal at the top of a best-buy table, because limited company mortgage pricing hides its real ranking in three places the tables flatten: arrangement fees, interest cover treatment, and criteria fit.
We broker whole-of-market across more than 100 lenders, so we have no product to push. Here is how we actually judge "best" on a company case.
Because limited company buy to let products routinely pair low rates with percentage arrangement fees. A rate that undercuts the market by 0.3% but carries a 3% fee added to the loan can cost thousands more over a two-year fix than a plainer product at a higher rate with a flat fee. The only honest comparison is total cost over the product term: interest paid plus all fees, on your loan size, divided over the months you are committed.
The second distortion is the stress test. Some products with attractive pricing assess rental cover in ways that cap your loan below what you need, at which point the "best" rate is academic. A product that lends the full amount at a slightly higher rate beats a product that lends £40,000 less at a lower one, for most purposes.
The market splits into tiers. The specialist SPV lenders, Paragon, Kent Reliance, Fleet Mortgages, Foundation Home Loans, Landbay and Precise among them, underwrite company-held buy to let daily and take the broadest view on portfolios, HMOs and newer companies. Intermediary-only lenders, The Mortgage Works, Leeds Building Society and Coventry Building Society among them, often price keenly for cleaner cases but only quote through a broker. Challenger names such as Aldermore, Shawbrook and LendInvest earn their keep on complex cases: trading-company borrowers, large portfolios, unusual stock.
No single lender is "best" across that map. The same company can be the cheapest borrower on one lender's sheet and declined by the next, which is why criteria fit, not brand, decides where a case should go.
As of June 2026, representative limited company buy-to-let pricing starts around 5.49% on the products we quote most, with the usual 0.20 to 0.40% premium over equivalent personal-name lending. Pricing steps with loan-to-value: 75% LTV is the structural norm, 65% buys a better tier, and the few 80% products carry a visible premium. Five-year fixes often assess at the pay rate rather than a stressed rate, which can unlock a larger loan even when the headline rate looks unremarkable: the 125% company ICR is where that advantage lives.
For live context across the market, see our limited company mortgage rates page.
Every company product ends in the same fork: take the incumbent lender's product transfer or remortgage to the open market. The transfer is low-friction; the remortgage re-runs the whole market and can also restructure, raising capital for the next deposit, moving from a trading company into a clean SPV, or consolidating a portfolio onto one facility. Because company pricing varies more between lenders than personal pricing does, the remortgage check is worth more here than landlords expect: we review every case at least four months before the fix ends, and our limited company remortgage page covers the process.
Four passes. First criteria: which of the 100+ lenders accept this company, these directors, this property, today. Second the stress test: which of those grant the loan size, on this rent, at their ICR and stress rate, checked with our stress test calculator before anything is submitted. Third true cost: total interest plus fees over the product term on the surviving options. Fourth the soft factors: speed to offer, valuation appetite, how the lender behaves when something wobbles. The product that wins all four is the best limited company buy to let mortgage for that case, and it is frequently not the one the borrower arrived asking about.
Get the company lender-ready: property SIC codes, documented deposit, directors briefed on personal guarantees. A clean file widens the panel, and the panel is where the value is. If you are setting up from scratch, start with our SPV setup guide; if you are ready to quote, a 15-minute call gets a Decision in Principle moving the same week, wherever in the UK the property sits.
No, marginally worse: limited company buy-to-let pricing typically sits 0.20 to 0.40% above the personal-name equivalent, reflecting the extra legal work in company lending. Landlords incorporate for the tax treatment, not the rate. Full mortgage interest deductibility and corporation tax rates inside the company usually outweigh the rate premium for higher-rate taxpayers, which is why the comparison should always be run after tax, not on headline rates.
The sharpest limited company buy-to-let pricing sits at 75% loan-to-value and below, so plan for a 25% deposit as the working norm. A handful of lenders lend to 80% at a visible rate premium. Dropping to 65% LTV buys another pricing tier with many lenders, so if you hold spare cash, it is worth quoting both leverage points before deciding.
Yes. Lenders underwrite the directors, the rent and the property, not the company's age, so an SPV incorporated last week with clean SIC codes (68100 or 68209) accesses the same products as one trading for years. What does move pricing is the case profile: LTV, property type, the directors' credit records, and whether the company is a clean SPV rather than a trading business.
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