Sustainable Growth Rate Guide
Sustainable growth rate, or SGR, estimates how fast a business can grow sales while using normal operations and current financing policy. It links profitability, dividends, and equity efficiency. A higher rate means the firm can support more expansion without adding outside equity. A lower rate warns that planned sales growth may need debt changes, dividend cuts, cost control, or new capital.
Why the rate matters
Growth is useful only when it can be financed safely. Fast sales growth can strain cash, inventory, receivables, and working capital. The sustainable growth rate gives a practical ceiling. It shows the speed that fits the present return on equity and retention policy. Managers can compare this limit with the target sales growth. The gap becomes an early funding signal.
What affects SGR
The main drivers are return on equity and the retention ratio. Return on equity measures the profit created for each unit of average equity. Retention ratio measures the part of earnings kept in the business. More retained earnings can support more assets. Better margins, stronger turnover, and efficient leverage can also lift ROE. Large dividends reduce retention, so they often reduce sustainable growth.
How this calculator helps
This calculator accepts both direct ratios and accounting values. You may enter net income, dividends, beginning equity, and ending equity. You may also override ROE or retention ratio when you already have audited percentages. The tool then reports the Higgins sustainable growth rate and the simple retained return rate. It also compares actual or target growth with the sustainable limit.
Reading the results
A target below SGR is usually easier to fund internally. A target above SGR is not automatically bad. It means management should review financing. The firm may need more debt capacity, new equity, lower payouts, faster collections, better margins, or slower growth. Use the sensitivity table to test small changes. A few points of ROE or retention can change the answer sharply.
Best practice
Use consistent period data. Match net income and dividends to the same year. Use average equity when possible. Remove unusual gains if they distort profit. Compare several years, not one period only. Then document the assumption, source, and period beside every exported result line.