typically a commercial landlord will want to look at year to date financials of your business (income statement and balance sheet). they will also want to know how long you've been in business and where you have leased commercial space before. sometimes with a small business/new business/entrepreneur the landlord will ask you to personally guarantee a lease. Depending on all of this as well as the lease terms and any upfront costs they need to incur for the space, the landlord will determine a rent deposit amount. this is a very subjective process and you will find different requirements from each landlord.