What it means
Every business invests in assets such as inventory, equipment and customer credit, and those assets are meant to produce revenue. Activity ratios show how hard the assets are working.
They are sometimes called turnover ratios or efficiency ratios. Each ratio compares a flow, such as sales or cost of goods sold, with a balance, such as average inventory or receivables.
Inventory turnover shows how often stock is sold and replaced, receivables turnover shows how quickly customers pay, and payables turnover shows how quickly the business pays suppliers. Total asset turnover looks at all assets together.
Many activity ratios can be translated into days, which are often easier to explain. A receivables turnover of 12 becomes about 30 days to collect, and an inventory turnover of 6 becomes about 61 days of stock.
Combining the three day measures gives the cash conversion cycle, which shows how long cash is tied up in operations. Interpretation needs care because there is no universal good number.
A supermarket turns stock over many times a year, while an aircraft maker takes years to convert materials into sales. Comparing a company with its own history and with close competitors is far more useful than comparing it with a different industry.
A very high ratio is not always positive. An unusually high inventory turnover can mean stock-outs and lost sales, and a very high receivables turnover can mean credit terms are so strict that customers go elsewhere.
Managers aim for a healthy balance, not the maximum. Activity ratios also help with forecasting and planning.
If a business expects sales to grow by 20%, the historical ratios show roughly how much extra inventory, receivables and equipment it will need to support that growth. Lenders use the same logic to judge how much working capital a growing customer will need to borrow.
In practice
Real-world examples
Example 1
A grocery chain reports inventory turnover of 15 and a quick sales cycle. Its CFO uses the ratio to check that fresh stock is sold before it spoils. A drop to 12 would trigger a review of ordering and pricing, because stock that sits for longer loses freshness and value.
Example 2
A heavy equipment manufacturer has total asset turnover of 0.6 because its factories are expensive and sales take time. An analyst comparing it with a software firm that has a turnover of 1.8 recognises that the two are not comparable.
Example 3
A fashion retailer compares its inventory turnover with two competitors. It discovers that it holds stock for twice as long, and it markets discounts earlier to clear slower lines. The change releases cash for new collections, so the retailer can buy fresh designs without borrowing.
Think of it
Activity ratios measure how hard your assets are working-how efficiently you're using them.
Formula
Calculation
Total asset turnover = Revenue / Average total assets
Average total assets = (Opening total assets + Closing total assets) / 2
A distributor has revenue of $3,000,000. Its total assets are $1,400,000 at the start of the year and $1,600,000 at the end, so the average is ($1,400,000 + $1,600,000) / 2 = $1,500,000. Total asset turnover = $3,000,000 / $1,500,000 = 2.0. The business generates $2 of sales for every $1 of assets.Case study
Seen in the real world
Riverside Hardware is a fictional retailer that, in this illustrative story, noticed its profit had been flat for three years despite rising sales. The owner asked an adviser to review its activity ratios.
The adviser found that total asset turnover had fallen from 2.4 to 1.9 because the shop had added slow-moving lines and extended credit to trade customers. Inventory and receivables had grown faster than revenue, tying up cash.
The owner removed the slowest 15% of products, tightened credit terms and began weekly stock reviews. Within a year asset turnover recovered to 2.2, and the freed cash was used to repay part of an overdraft. The owner now reviews the ratios every quarter alongside profit.
Watch out
Common mistakes
- Comparing activity ratios across unrelated industries. Business models differ too much for a fair comparison.
- Using year-end balances instead of averages. A single date can be distorted by seasonality.
- Assuming that higher is always better. Extremely high turnover can signal stock shortages or overly tight credit.
Questions
People also ask
What counts as an activity ratio?
Inventory turnover, receivables turnover, payables turnover, fixed asset turnover and total asset turnover are the main ones. They all measure how effectively resources are used.
How are activity ratios different from profitability ratios?
Activity ratios measure efficiency in using assets, while profitability ratios measure how much profit is earned from sales or investment. Both are needed for a full picture.
Can activity ratios predict problems?
They can give early warnings. For example, falling receivables turnover often appears before bad debts rise, which gives managers time to tighten credit before losses arrive.
Watch