Can I split expenses based on the custom fields? Yes, that can be done. Go to the expense you would like to split and select Split on top of the expense details. Choose how you would like to split the expenses. In this case, it would be Split by field. By doing so, you would see all the available fields that can be used for splitting the expense. Select the custom field on the basis of which you would like to split. Make necessary changes and hit Save.