Q.Distinguish between Gross Profit Ratio and Net Profit Ratio. Also briefly explain the significance of Return on Investment.

Gross Profit Ratio and Net Profit Ratio both measure profit as a percentage of sales, but they stop at very different points along the income statement.

Gross Profit Ratio measures the margin left after deducting only the direct cost of revenue from sales, while Net Profit Ratio measures the final margin left after deducting every operating expense, interest, and tax — a much more complete measure of overall profitability relative to sales. Return on Investment, unlike either of these two sales-based ratios, measures the return earned on the total long-term capital (both owners' an …

Gross Profit Ratio vs Net Profit Ratio

Since Net Profit Ratio deducts far more than Gross Profit Ratio does, it is always numerically smaller (as seen here: 30% versus 13.5%) and gives a more complete picture of overall profitability, while Gross Profit Ratio isolates how efficiently the firm manages its core, direct trading costs alone.

Significance of Return on Investment (Return on Capital Employed)

Unlike Gross Profit Ratio and Net Profit Ratio, which measure profit as a percentage of SALES, Return on Investment measures profit as a percentage of the total long-term CAPITAL actually invested in the business (Shareholders' Funds + Long-term Debt). This matters because:

1. It shows how efficiently the firm's invested capital, as a whole, is being used to generate returns — regardless of how much revenue that capital happens to generate.
2. It allows comparison between firms of very different sizes or even different industries, since it measures return relative to the capital base rather than to sales volume. …

Students sometimes assume a firm with a higher Net Profit Ratio must automatically also have a higher Return on Investment — this is not necessarily true, since Return on Investment also depends on how much capital was needed to generate that profit; a firm with a THINNER margin but a much SMALLER capital base (or a much higher s …