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Commercial mortgages: calculator and rates

Owner-occupied premises or let investment property: rates, deposits, and how lenders stress test the income.

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Monthly payment, interest only
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Repayment / month
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Extra a month to repay
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Total interest, interest only
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Total interest, repayment
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Loan to value
Assumes the rate stays the same for the whole term. Real products fix for 2–10 years and then revert, so treat this as a guide.

Two kinds of commercial mortgage

How commercial lenders stress test

Every commercial lender asks the same question: if rates rise, can the income still pay the loan? How they test it depends on where the income comes from.

Owner-occupiedInvestment (let)
Income testedBusiness profits (EBITDA, with add-backs)Rent from the tenants
TestDebt service cover: profits cover the yearly capital and interest, typically 1.25–1.5 timesInterest cover: rent covers the interest, typically 125–150%, higher for weaker tenants
Stress rateThe pay rate plus a margin, or a floor rate, whichever is higherThe pay rate plus a margin, or a floor rate; longer fixes are often tested nearer the pay rate
Existing debtOther business loans, leases and finance count against the profitsUsually just this loan
Max LTVUp to 80% for strong, profitable businessesUp to 75%

Because many commercial loans are on capital repayment over 15–25 years, the test often covers the capital as well as the interest. That's why a commercial loan can be limited by the income even at a modest LTV.

Commercial mortgage rates: what sets them

Commercial mortgage rates are priced case by case. A strong owner-occupied deal at 50–60% LTV can price close to the best buy-to-let rates. A vacant, specialist or heavily leveraged property costs noticeably more. The main factors are:

  • Loan to value: most lenders go to 70–75%, and up to 80% for profitable owner-occupiers. The lower the LTV, the better the rate.
  • Property type: offices, retail, industrial, mixed-use and semi-commercial, leisure, or specialist uses such as care homes and hotels.
  • Income: the trading accounts for owner-occupiers, or the tenant's covenant and lease length for investment property.
  • Borrower: experience, credit history and other assets.
  • Fixed or variable: many commercial loans track Bank Rate plus a margin, and fixes of 2–10 years are widely available.

Semi-commercial and mixed-use

A shop with a flat above, or offices with residential upstairs, is usually treated as semi-commercial. Specialist lenders go to 75% LTV on these, and they often price better than pure commercial property. For the residential part, see the buy-to-let mortgage calculator.

Why use a commercial mortgage broker?

Commercial lending isn't priced on a public rate table. Lenders set terms deal by deal, and many specialist lenders only work through brokers. We know which lenders take which property types and how each one stress tests the income, and we package the case so it's credit-ready. That usually means a better rate or a bigger loan than approaching a bank directly. You can also browse live products on our sourcing tool.

Frequently asked questions

What are commercial mortgage rates in the UK?

They're priced individually. Strong owner-occupied or well-let investment cases at modest LTVs get the keenest rates, while higher LTVs, vacant or specialist property cost more.

How much deposit do I need for a commercial mortgage?

Usually 25–30%. A profitable business buying its own premises can borrow up to 80%, so 20% down, and additional security can sometimes reduce the deposit further.

How do commercial lenders stress test?

Owner-occupiers are tested on business profits covering the yearly capital and interest, typically 1.25–1.5 times. Investment property is tested on the rent covering the interest, typically 125–150%, at a stressed rate.

Can I get a commercial mortgage for a new business?

It's harder, but possible with a strong deposit, relevant experience, a solid business plan or additional security. Specialist lenders are often more flexible than high-street banks.

How long is a commercial mortgage term?

Typically 3 to 25 years, and some lenders go to 30. Interest-only periods are more common on investment property.

Is a commercial mortgage regulated?

Usually not. It becomes regulated if you or a close family member will live in 40% or more of the property.