Get ready for an unhappy tax surprise

For many workers, income taxes are on autopilot. Your employer withholds a fixed amount from each paycheck, and when you file your return the following year, it generally works out. About 75% of filers get a refund each year, and it’s usually around the same amount, as long as you don’t change jobs or undergo other big changes.

But big changes hit most taxpayers in 2018, because President Trump signed the Tax Cuts and Jobs Act into law at the end of 2017. The TCJA lowered the overall tax burden for about two-thirds of workers, leaving a majority with slightly larger paychecks. But a quirk could leave some taxpayers with an unhappy surprise as they file their 2018 returns this year, and find that the refund they were expecting is smaller than before. Some people accustomed to a refund could even end up owing money, instead.

Jonathan Smoke, chief economist for Cox Automotive, which owns Kelley Blue Book and other auto-industry services, believes many taxpayers had too little money withheld from their paychecks in 2018, because of a mismatch between changes in taxes owed and taxes withheld. “We think tax withholding tables were too aggressively adjusted,” Smoke told reporters recently at the Detroit auto show. “Withholdings are down close to 4%, even though the tax changes imply they should only be down 1%. That could mean several million people are going to get a smaller refund. And it could snowball.”

The IRS updated its withholding calculator last year, to account for changes in the tax law. But few taxpayers seem to have used the tool or updated their withholdings to account for the changes. Cox Automotive checked on its own 30,000 employees, and found that the portion changing their withholdings was essentially the same as the year before, indicating no bump in updates related to the new tax rates. Cox also found that taxes paid by its employees fell by more than the tax-rate changes imply they should have, suggesting those workers will end up with smaller returns than expected when they file—or taxes owed instead of a return.

Fewer, smaller refunds

The Trump tax cuts, which passed with only Republican votes, turned out to be unpopular because many voters felt they favored businesses and the wealthy over the middle class. The law slashed the corporate tax rate from 35% to 21%, with corporate profits soaring and corporate tax receipts plunging in 2018. Taxes paid by individuals actually rose, leaving workers bearing a higher portion of the nation’s overall tax burden. And while Trump and his fellow Republicans predicted the federal deficit would fall because of the tax cuts’ stimulative effect, it is surging instead.