🏗️ Additional Funds Needed Calculator
Estimate how much extra external financing a growing company will need using the Additional Funds Needed (AFN) formula.
What is Additional Funds Needed?
Additional Funds Needed (AFN) estimates how much external financing (debt or equity) a company must raise to support a projected increase in sales, after accounting for the extra assets required, spontaneous increases in liabilities, and internally generated retained earnings.
The formula
AFN = (Assets/Sales × ΔSales) − (Liabilities/Sales × ΔSales) − (Projected Sales × Net Profit Margin × (1 − Payout Ratio)). A positive AFN means the company needs external financing; a negative AFN means it generates more funds internally than it needs.
This calculator is for general financial education and planning purposes, using the standard percent-of-sales forecasting method, which assumes accounts scale proportionally with sales — a simplification of real business dynamics.