Tax Reform Could Hurt These 2 Airline Stocks in the Long Run

Last week, Congress passed a business-friendly tax reform bill that will reduce the statutory corporate tax rate from 35% to 21%. Furthermore, businesses will be allowed to "expense" their capital expenditures for the next five years, further reducing the cash tax liabilities of companies in capital-intensive industries.

Airlines are set to be some of the biggest winners from tax reform. Most airlines pay the full statutory tax rate today and have very high capex requirements.

However, tax reform may not be good news for struggling legacy carriers American Airlines (NASDAQ: AAL) and United Continental (NYSE: UAL). Neither carrier will see any cash savings in the next few years. Meanwhile, tax reform could encourage smaller, more profitable airlines like Southwest Airlines (NYSE: LUV) to grow faster, putting pressure on unit revenue and profit margins throughout the industry.

Profit has been sinking at American and United

A few years ago, American Airlines and United Continental were flying high as a decline in oil prices added billions of dollars to their bottom lines. Unfortunately, 2017 has been a rough year for both carriers. Fuel costs have started to rebound, while labor costs are moving higher. Additionally, United Airlines has posted mediocre unit revenue results recently.

An American Airplanes in flight, with mountains in the background
An American Airplanes in flight, with mountains in the background

Profitability has plunged at American Airlines and United Airlines in 2017. Image source: American Airlines.

As a result, in the first nine months of 2017, American Airlines' adjusted pre-tax margin fell to 9.8% from 14.1% a year earlier, while United's adjusted pre-tax margin fell to 9% from 13.1% a year earlier. Both carriers are on track for further margin erosion in the fourth quarter.

In the meantime, oil prices have continued to rise this year. Even with slower non-fuel unit cost inflation in 2018, American and United will probably need unit revenue growth of 3%-4% just to keep pre-tax profit steady.

In this context, the passage of the tax reform bill might seem like great news. Like most other U.S. airlines, both carriers report effective tax rates of 35% or more. The move to a 21% federal corporate tax rate will create an EPS tailwind of at least 20%.

What tax savings?

Thus, on paper, tax reform looks good for American Airlines and United Continental. However, both companies accumulated huge losses during the 2000s. The resulting net operating loss (NOL) credits have allowed them to avoid paying any cash taxes up to this point.

As of the end of 2016, American Airlines still had $10.5 billion of NOL carryforwards on its balance sheet. United Continental had $4.4 billion of NOL carryforwards.