Today we'll evaluate Shenzhen Expressway Company Limited (HKG:548) to determine whether it could have potential as an investment idea. Specifically, we're going to calculate its Return On Capital Employed (ROCE), in the hopes of getting some insight into the business.

First of all, we'll work out how to calculate ROCE. Then we'll compare its ROCE to similar companies. Last but not least, we'll look at what impact its current liabilities have on its ROCE.

Understanding Return On Capital Employed (ROCE)

ROCE is a metric for evaluating how much pre-tax income (in percentage terms) a company earns on the capital invested in its business. All else being equal, a better business will have a higher ROCE. Ultimately, it is a useful but imperfect metric. Author Edwin Whiting says to be careful when comparing the ROCE of different businesses, since 'No two businesses are exactly alike.

How Do You Calculate Return On Capital Employed?

Analysts use this formula to calculate return on capital employed:

Return on Capital Employed = Earnings Before Interest and Tax (EBIT) ÷ (Total Assets - Current Liabilities)

Or for Shenzhen Expressway:

0.058 = CN¥2.2b ÷ (CN¥45b - CN¥6.5b) (Based on the trailing twelve months to December 2019.)

Therefore, Shenzhen Expressway has an ROCE of 5.8%.

Check out our latest analysis for Shenzhen Expressway

Does Shenzhen Expressway Have A Good ROCE?

ROCE is commonly used for comparing the performance of similar businesses. Using our data, Shenzhen Expressway's ROCE appears to be significantly below the 7.6% average in the Infrastructure industry. This performance is not ideal, as it suggests the company may not be deploying its capital as effectively as some competitors. Setting aside the industry comparison for now, Shenzhen Expressway's ROCE is mediocre in absolute terms, considering the risk of investing in stocks versus the safety of a bank account. Readers may find more attractive investment prospects elsewhere.

You can click on the image below to see (in greater detail) how Shenzhen Expressway's past growth compares to other companies.

It is important to remember that ROCE shows past performance, and is not necessarily predictive. ROCE can be deceptive for cyclical businesses, as returns can look incredible in boom times, and terribly low in downturns. ROCE is only a point-in-time measure. Future performance is what matters, and you can see analyst predictions in our free report on analyst forecasts for the company.

What Are Current Liabilities, And How Do They Affect Shenzhen Expressway's ROCE?

Liabilities, such as supplier bills and bank overdrafts, are referred to as current liabilities if they need to be paid within 12 months. Due to the way ROCE is calculated, a high level of current liabilities makes a company look as though it has less capital employed, and thus can (sometimes unfairly) boost the ROCE. To counteract this, we check if a company has high current liabilities, relative to its total assets.