Abstract: A system and method for use by a business entity for loan origination and underwriting in connection with real estate investment using a computer implemented application having a plurality of data input and dialog screens requiring one-time entry of data. The method includes steps to be followed in any sequence by one or more users of the business entity for using the system. The method includes inputting and storing loan origination information via data input screens, the information including financial and physical information relating to a specific real estate investment. The input loan origination information is dynamically compared with pre-determined rules and a dialog screen is displayed on a near real-time basis if any of said rules are violated. The input data is dynamically compared with other rules for determining the ongoing sequence of data input and dialog screens.