The amount you will need to raise as a deposit for a commercial mortgage depends on the lender, but it is usually somewhere between 20% and 40% of the cost of the property depending on a range of factors including, but not limited to:• Your personal and business credit history• Type of property you wish to buy• Level of experience in the industry• Affordability of the repayments based on your business accountsThe size of your deposit is usually negotiable, and you can even get a commercial mortgage without a deposit (a 100% loan-to-value ratio) if you are able to provide additional security such as assets or other properties. While the lack of a deposit may be an attractive proposition, you should be aware that defaulting on the mortgage could see the property used as security repossessed.