Comparison · Business Finance · 2026

Commercial Mortgage vs Business Loan UK 2026: Which Suits Your Purchase?

A commercial mortgage is a long-term loan secured against business premises, typically used to buy or refinance a shop, office, warehouse or other trading property. A business loan is more flexible — often unsecured or lightly secured — and suited to working capital, equipment or shorter-term needs. Here is how the two compare for 2026.

TL;DR - 30-Second Summary

- Commercial mortgage: secured against premises, 25-40% deposit, long term (up to 25 years), lower rates
- Business loan: unsecured or lightly secured, no deposit needed, short term (1-10 years), higher rates but faster and more flexible
- Rule of thumb: use a commercial mortgage to buy property, a business loan for everything else

Side by Side: Commercial Mortgage vs Business Loan

Feature	Commercial Mortgage	Business Loan
Security	Secured against the property	Often unsecured or backed by a personal guarantee
Typical deposit	25-40% of property value	None required
Typical term	3-25 years	1-10 years
Rate level	Lower — secured against a real asset	Higher — reflects unsecured risk
Speed to funds	6-12 weeks typical	Days to a few weeks
Best use	Buying or refinancing premises	Working capital, equipment, expansion
Risk on default	Repossession of the property	Court action and any personal guarantee called in

What Is a Commercial Mortgage?

A commercial mortgage lets a business buy, refinance or sometimes develop non-residential property — offices, retail units, warehouses, restaurants, or mixed-use buildings. Owner-occupier mortgages (where the business trades from the premises) and commercial investment mortgages (where the business lets the property to tenants) are both available, usually with somewhat different rates and underwriting criteria.

Lenders assess the business trading history, projected income (or rental income for investment purchases), the property valuation and the strength of the covenant. A larger deposit generally secures a lower rate, similar to residential mortgage lending.

What Is a Business Loan?

A business loan is a lump sum advanced to a company or sole trader, repaid over an agreed term with interest. Loans can be unsecured (based on the business's trading history and creditworthiness) or secured against specific assets other than property, such as invoices, equipment or a debenture over company assets. Government-backed Start Up Loans and high street bank term loans both fall into this category.

Because a business loan is not tied to a property purchase, it is well suited to funding needs that arise quickly — stocking up for a busy season, buying equipment, hiring staff ahead of growth, or bridging a short cash flow gap.

Who Should Choose What?

Choose a commercial mortgage if...

- You are buying or refinancing business premises
- You have a 25%+ deposit available
- You want the lowest possible long-term rate
- You can wait 6-12 weeks for completion

Choose a business loan if...

- You need funds quickly, within days or weeks
- The need is not tied to buying property
- You do not have a large deposit to put down
- You want a shorter repayment commitment

Frequently Asked Questions

What deposit do I need for a commercial mortgage?

Most commercial mortgage lenders ask for a deposit of 25-40% of the property value, giving a loan-to-value of 60-75%. Owner-occupied trading businesses with strong accounts can sometimes access higher LTVs than pure investment purchases. This is a much larger upfront outlay than an unsecured business loan, which typically requires no deposit at all.

How long can a commercial mortgage term run?

Commercial mortgage terms typically run from 3 to 25 years, often on a repayment basis, sometimes with an initial interest-only period. Business loans are usually much shorter, commonly 1 to 10 years, reflecting their use for working capital, equipment or expansion rather than buying a long-life asset like property.

Is a commercial mortgage cheaper than a business loan?

Generally yes, per pound borrowed, because the property acts as security, reducing the lender risk. Commercial mortgage rates typically track a margin over the Bank of England base rate or SONIA, while unsecured business loans carry a higher margin to compensate for the lack of security and can carry APRs several percentage points above secured commercial mortgage rates.

Show 5 more questions

Can I use a business loan to buy premises instead of a commercial mortgage?

It is possible for smaller premises or short leases, but most lenders will simply direct a property purchase application to their commercial mortgage team once the loan size and asset type make sense for secured lending. Using a short-term unsecured business loan to buy property is usually more expensive and carries refinancing risk if the loan matures before the business is ready to remortgage.

What can a business loan be used for that a commercial mortgage cannot?

Business loans are flexible and can fund working capital, stock, equipment, marketing, hiring or expansion — anything that is not tied to a specific property purchase. Commercial mortgages are restricted to buying, refinancing or sometimes improving commercial premises, and lenders will want to see the property used as security throughout the term.

Do both options require personal guarantees from directors?

Often yes for smaller limited companies. Business loan lenders frequently require a personal guarantee from directors, especially for younger or smaller companies. Commercial mortgages are secured primarily against the property itself, but a personal guarantee may still be required if the loan-to-value is high or the covenant is considered weaker.

How quickly can each type of finance be arranged?

An unsecured business loan can often be approved and paid out within a few days to a couple of weeks. A commercial mortgage involves a formal valuation, legal work and underwriting similar to a residential purchase, typically taking 6 to 12 weeks from application to completion, sometimes longer for complex properties.

What happens if my business cannot keep up repayments?

With a commercial mortgage, the lender can ultimately repossess and sell the secured property to recover the debt. With an unsecured business loan, the lender has no direct claim on a specific asset but may pursue the company through the courts and call on any personal guarantee given by directors, which can put personal assets at risk.

Calculators for this topic

Calculate your Credit Card Payoff

Find out how long it will take to pay off your credit card balance.

Debt Payoff Calculator

Compare avalanche (highest APR first) and snowball (smallest balance first) strategies across multiple UK debts.

Calculate your Mortgage

Calculate monthly mortgage payments, total interest, and full repayment cost.

Car Finance Calculator

Calculate monthly payments for PCP, HP and personal loan car finance. See total cost and interest paid over the term.

Disclaimer: Figures shown are typical market ranges for 2026 and are for general information only, not financial advice. Rates, deposits and terms vary by lender and business circumstances. For personalised guidance, consult a regulated commercial finance broker or adviser.

About the author

James Morgan

Property & Mortgage Writer

James Morgan has been writing about UK property and mortgages since 2016. He covers the full purchase journey — affordability checks, mortgage product comparison, the deposit and loan-to-value puzzle, stamp duty (SDLT in England and Northern Ireland, LBTT in Scotland, LTT in Wales), first-time buyer reliefs, conveyancing costs, and what to expect at completion. James also writes on the landlord side: buy-to-let mortgages, the 3% additional-property SDLT surcharge, Section 24 finance-cost restriction, rental yield maths, and the practical realities of being a small private landlord in the post-2017 tax regime. He has a particular interest in the remortgage decision — when to switch product, the trade-off between rate and arrangement fee, early repayment charges, and how to read a mortgage offer document. James's mortgage worked examples are built up from the underlying amortisation schedule, not borrowed from comparison sites, and stamp-duty figures are verified band-by-band against the HMRC SDLT calculator. He writes to CalcHub's editorial standards, with primary-source citations to HMRC, Revenue Scotland and the Welsh Revenue Authority, and clear disclosure that CalcHub does not sell mortgages or take affiliate commission on regulated mortgage products.