How To Write A Financial Plan Balance Sheet . The balance sheet is based on the fundamental equation: To get an accurate picture of your net worth, start by totaling your columns or rows at the bottom of the balance sheet to get total assets and total liabilities. What Does A Business Financial Plan Include? Foundr from foundr.com A financial plan helps you know where your business stands and lets you make better informed decisions about resource allocation. Assets = liabilities + equity. The financial section of your business plan determines whether or not your business idea is viable and will be the focus of any investors who may be attracted to your business idea.