Commercial Mortgage Calculator UK (2025)

Commercial Mortgage Calculator UK – Estimate Your Business Property Loan. Buying a business property is a major financial decision.

Use our easy-to-use commercial mortgage calculator to estimate your monthly repayments, total cost, and plan your investment better. Get a clearer picture before taking the next big step.

Your results

Monthly capital & interest repayment: £0
Interest-only repayment amount: £0
Total amount payable: £0
Total interest charged: £0

Example:
If you borrow £250,000 at an interest rate of 5% over 20 years,

  • Your estimated monthly repayment would be £1,648
  • Total amount repayable: £395,533
  • Total interest charged: £145,533

What is a Commercial Mortgage Calculator UK?

A commercial mortgage calculator UK is a simple tool that helps you estimate your monthly repayments, total payable amount, and total interest for a business property loan.

Whether you’re buying a new office, warehouse, or expanding your business, this calculator gives you a quick cost breakdown.

How to Use Our Commercial Mortgage Calculator?

Using our calculator is simple:

  • Enter the loan amount you need.
  • Adjust the interest rate according to the lender’s rate.
  • Choose your preferred repayment term.
  • Instantly view your estimated monthly repayments and total costs.

What Affects Your Commercial Mortgage Repayments?

Several factors impact your monthly mortgage costs:

  • Loan Amount: Larger loans mean higher repayments.
  • Interest Rate: A lower rate saves you money monthly.
  • Loan Term: A longer term reduces monthly payments but increases overall interest.
  • Repayment Type: Interest-only or capital & interest repayment methods change your payment structure.

Other Costs to Consider

Apart from loan repayments, don’t forget:

  • Property Taxes: Annual tax charges add to your costs.
  • Insurance Premiums: Protect your property against risks like fire and flooding.
  • Maintenance Expenses: Property upkeep is necessary to maintain value.

How Is the Value of a Commercial Mortgage Decided?

The loan amount is usually based on:

  • The property’s appraised value
  • Loan-to-Value (LTV) ratio (usually up to 70%)
  • Business income (Net Operating Income)
  • Loan term and risk assessment

Factors That Affect Commercial Mortgage Interest Rates

Interest rates depend on:

  • Your credit score
  • Business financial strength
  • Type and location of property
  • Loan term length
  • Current UK market conditions

How Can a Commercial Mortgage Calculator Help You Get Approved?

By understanding your affordability early, you can:

  • Choose realistic loan amounts
  • Improve your chances of lender approval
  • Plan your finances properly This prevents rejection due to over-borrowing.

Types of Commercial Mortgages Available

Depending on your needs, you could explore:

  • Standard Commercial Mortgage
  • Owner-Occupied Commercial Mortgage
  • Investment Property Mortgage
  • Development Finance Loans
  • Bridging Loans
  • Semi-Commercial (Mixed-Use) Mortgages

What Affects Commercial Mortgage Repayments?

A few key things affect how much you pay each month:

  • Loan Amount – Higher amount = bigger monthly payment
  • Interest Rate – Higher rate = more interest paid
  • Loan Term – Longer term = lower monthly payment but more total interest

Even small changes in rate or term can make a big difference.

What is an Interest-Only Mortgage?

With an interest-only mortgage:

  • You only pay the interest each month.
  • The main loan (principal) is repaid later or at the end.

This keeps monthly costs low in the short term but doesn’t reduce your debt.

How Can I Improve My Chances of Getting a Commercial Mortgage?

Here’s what lenders like:

  • A good credit score
  • A solid business plan
  • A reasonable loan-to-value ratio
  • Steady business income
  • A larger deposit

Be honest, show your numbers clearly, and prepare your documents.

FAQs

Can I get a commercial mortgage with no deposit?

Most lenders in the UK require a deposit of at least 20% to 30% of the property value. 100% commercial mortgages are very rare and typically need additional security like another property or business assets.

What are the current commercial mortgage rates in the UK?

Commercial mortgage rates typically range from 3% to 7% in 2025, depending on the loan size, property type, business profile, and credit rating. Rates can change based on Bank of England base rates and economic conditions.

Is there a difference between commercial and residential mortgages?

Yes, commercial mortgages are used for business properties and usually have shorter terms, higher interest rates, and stricter lending criteria compared to residential mortgages.

How does a commercial mortgage work in the UK?

A commercial mortgage is a loan to buy or refinance a business property. You borrow a set amount from a lender and repay it monthly over an agreed term, with interest. The property acts as security for the loan.

What are the two types of mortgages in the UK?

The two main types are:
Residential Mortgage – for buying a home to live in.
Commercial Mortgage – for buying a property for business use or investment.