When an underwriter is assessing a mortgage application the key criteria is the applicants ability to afford the loan repayments – sometimes also referred to as a ‘stress test’. Many mortgages will offer an ‘easy start’ period on interest only terms but most mortgage lenders wish to see both capital and interest repaid thereafter. In assessing your ability to repay the loan the underwriter will look at business income / profits via any accounts held and any other sources of confirmed income that you have. In situations where you are renting business premises and wish to purchase a freehold property (perhaps as a sitting tenant) then the rent you pay will be assessed as an ‘add back’ when looking at the overall position.