This document describes using a customized Excel workbook with 3 spreadsheets to model the financial projections of a proposed public bank over 8 years. The workbook is based on an existing model for a simple commercial bank but modified for a public bank and includes existing city/state assets. It provides details on startup costs, operating ratios, deposits that will increase over time, dividend payouts beginning in year 3, and profitability projections showing the bank will be solidly profitable by year 8 without needing outside investment.