Sustainable Growth Rate Calculator

What does the sustainable growth rate estimate?

The sustainable growth rate, or SGR, estimates how quickly a company can expand using profits kept inside the business rather than relying on new share issuance or a deliberate increase in borrowing. It combines two operating-finance decisions: how much profit management retains and how efficiently the company earns profit on shareholder capital. The result is an annualized percentage, not a guarantee. It is most useful as a disciplined baseline for comparing a company's stated growth ambitions with the internal funding capacity implied by its financial statements.

Public-company users can obtain the required figures from annual or quarterly filings. The SEC guide to Form 10-K and Form 10-Q explains how those reports describe financial performance, while Investor.gov's EDGAR guide shows where to find filings.

How should each input be entered?

Net income

Enter profit after tax for one consistent period, normally the latest fiscal year. Net income is required for a meaningful retention ratio and ROE. A higher positive figure raises ROE and usually raises SGR, all else equal. A negative figure is accepted because loss-making companies can have a negative ROE and negative sustainable growth rate. Do not mix quarterly net income with annual dividends or annual equity. Also avoid substituting EBITDA, operating income, or free cash flow; those measures answer different questions.

Dividends paid

Enter cash dividends associated with the same period as net income. Dividends are optional in the sense that a company may pay none, in which case enter zero. Higher dividends reduce retained earnings, lower the retention ratio, and reduce SGR. If dividends exceed net income, the retention ratio becomes negative, signaling that the payout was funded partly from prior cash, asset sales, or financing rather than current profit. Use common-share dividends when analyzing common shareholders and stay consistent about whether preferred dividends are included.

Shareholders' equity

Enter positive common shareholders' equity. Average equity—typically the average of beginning and ending balances—is preferable because net income is earned across a period while ending equity is a point-in-time balance. Ending equity is an acceptable practical fallback when average equity is unavailable. Lower equity mechanically raises ROE, so a highly leveraged or recently repurchasing company can show a high SGR even when the operating business has not improved. The SEC financial-statement guide provides a concise explanation of net income, dividends, and shareholders' equity.

How is the result calculated?

For nonzero net income, the same SGR can be written as retained earnings divided by shareholders' equity. With the prefilled example, the company earns $2,000,000, pays $1,000,000 in dividends, and has $10,000,000 of equity. It retains 50% of profit, earns a 20% ROE, and therefore has a 10% sustainable growth rate. Full internal precision is used in the calculation; displayed values are rounded to two decimal places.

How should the outputs be interpreted?

Sustainable growth rate

A positive SGR indicates the model supports growth without changing the payout ratio, ROE, or financing policy. A zero rate means retained earnings add no growth capacity—usually because the company retains no earnings, earns no return on equity, or both. A negative rate can arise from losses or from dividends exceeding current profit. Higher is not automatically better: a very high rate may reflect unusually strong economics, unusually low equity caused by leverage or buybacks, or a temporary earnings peak.

Retention ratio, payout ratio, and retained earnings

The retention ratio is the share of net income kept in the company. The payout ratio is the complementary share distributed as dividends; for ordinary positive-profit cases they sum to 100%. Retained earnings is the dollar amount of current profit left after dividends. These measures explain the funding side of SGR. The earnings-allocation bar and its data table use exactly these current values. When the split is economically drawable, each colored segment, legend row, amount, and percentage comes from the same calculation model.

Return on equity

ROE measures current-period net income relative to shareholder capital. It is the efficiency side of SGR. A high ROE can support rapid internal growth, but analysts should examine why ROE is high. Operating margins, asset efficiency, leverage, share repurchases, impairments, and one-time gains can all affect it. Negative equity makes conventional ROE difficult to interpret, so this calculator requires positive equity for a non-neutral result.

What do the chart and projection table show?

The chart converts the SGR into an index that starts at 100. The sustainable path compounds at the calculated rate for five years, while the no-growth baseline remains at 100. This makes the effect of compounding easy to see without mixing dollar scales. The projection table adds illustrative net income and equity amounts. Each year assumes the same ROE and retention ratio, so both net income and equity grow at the same SGR. The table is a scenario engine, not management guidance: changing margins, capital intensity, dividends, leverage, or share issuance would change the actual path.

A useful external comparison is broad economic growth, but the comparison should match geography, industry, and inflation basis. The Federal Reserve Bank of St. Louis publishes a real U.S. GDP growth series sourced from the Bureau of Economic Analysis. A company growing above the economy may be gaining share, operating in a faster-growing market, or benefiting from price and mix; it may also be taking more risk.

What are the main limitations and common mistakes?

• Do not treat SGR as a valuation conclusion or personalized investment recommendation. It is one diagnostic input.
• Do not combine figures from different periods, currencies, accounting scopes, or continuing versus discontinued operations.
• Normalize unusual gains, losses, and dividend events when they distort the period being analyzed.
• Compare average equity with period earnings when possible, especially after large buybacks, acquisitions, or capital raises.
• Test multiple periods. One year's ROE and payout policy may not represent a sustainable operating state.
• Remember that growth consumes working capital and fixed assets. The simple SGR framework assumes the existing return on equity already captures those reinvestment needs.

The strongest use of this calculator is comparative: review the same company across several years, compare peers using consistent definitions, and reconcile the result with management's capital-allocation policy. Downloading the workbook preserves the current inputs, outputs, breakdown, projection rows, and methodology notes for further review.