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Guide to
Commercial & Buy to Lets

What is a Commercial Mortgage? 

A commercial mortgage is a type of loan used to purchase land or a property, this  property will be used solely for business purposes.

 

 What is a Buy to Let Mortgage? 

Buy to let mortgages are for persons who are interested in purchasing investment properties rather than a property to reside in.. This could be through their individual name or a SPV limited company.

Important learning: EWS1 requirements Cladding issues on leasehold properties - read here

Interest Cover Rate (ICR) and how it works?

The Interest Cover Rate (ICR) is a financial ratio used to establish if a company has the capacity to pay the interest on its outstanding debt. The lenders and creditors use this to determine how risky lending funds might be. This ratio also helps to establish the stability of the company.

How is ICR used to calculate the maximum loan amount?

The  total annual rental income is divided by the ICR assessment  rate which is usually 5.50%. That total calculated amount is then divided by the interest cover rate which is usually 125% for individuals and companies or 130% for higher rate tax payers. These rates are all dependent on the lender and the product.  The total is the maximum loan amount available.

                                              Total Annual Rental Income  =  Total Calculated Amount

ICR Assessment Rate (5.5%)

                                                  Total Calculated Amount    =     Maximum Loan Amount   

Interest Cover Rate (125%)

Limited Company vs Individual

The importance of Tax Planning

If an investment property is held in a personal name, the profit is taxed at a marginal tax rate which can go up to 45% if the borrower becomes a higher rate tax payer. On the other hand if an investment property is held through a company and letting iis the nature of the business, the profits on disposal are taxed at the corporation tax rate which is currently 19%. It is best to consult with your accountant to receive the best tax advice for your current situation. This will help to determine how to move forward.

First Time Landlord

A first time landlord is a  person who is  buying their first  property for investment purposes.

Portfolio Landlords

A portfolio landlord is a person who currently owns one or more properties used for investment purposes.

What is a Mixed Use property? 

A mixed use property is a property that consist of a commercial and residential element. The commercial element is usually on the ground floor and the residential element iis usually located above the commercial.

  

Trading Address

River Commercial

River House
3-4 John Prince's St
London, W1G 0JL

Registered address

​​

Trinity Court, Church Street, Rickmansworth, United Kingdom, WD3 1RT

Company status

Active

©2026 River Commercial (All Rights Reserved)

River Commercial is a trading style of River Commercial Ltd and is authorised by the Financial Conduct Authority under reference 726737

https://register.fca.org.uk/s/

Registered in England and Wales. Companies House registration number 08854786. FIBA Number NAC10469. ICO Number ZA554275 

River Commercial is licensed finance intermediary & credit brokerage River Commercial does not provide advice or recommendation or any regulated financial products. The registered address is Batchworth House, Batchworth Place, Church Street, Rickmansworth, Herts, WD3 1JE

A guide to our fees

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Terms of Business

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Bridging Finance
Buy to Let / Commercial
Development Finance

Bridging Finance Calculator

Short-term lending 1–24 months. Rates from 0.79%/month.

£
£
0.79%1.5%
1m24m

Results

LTV
71.4%
Monthly Interest
£3,950
Total Interest
£23,700
Total Repayable
£523,700
Arrangement Fee (est. 2%)
£10,000
Indicative only. Subject to valuation and legal services.

Buy to Let & Commercial Mortgage

BTL from 2.2% | HMO from 2.9% | Commercial from 3.55%+BBR

£
50%85%
2.2%8%
530

Results

Loan Amount
£300,000
Monthly Payment
£875
Annual Payment
£10,500
Rental Needed (125% ICR)
£13,125
Yield Required
3.3%
Indicative only. Subject to credit and underwriting.

Development Finance Calculator

Up to 90% of costs / 75% LTGDV. Rates from 7.95% p/a.

£
£
£
50%75%
7.95%14%
6m36m

Results

Max Facility
£1,300,000
Total Costs
£1,200,000
% of Costs Funded
100%
Est. Interest (rolled-up)
£175,500
Indicative Profit
£624,500
Profit on Cost
52%
Indicative only. Subject to planning, QS and lender underwriting.
Ready to proceed?Speak to a River Commercial specialist for the best terms.
Call 020 7493 4631