Businesses—especially smaller firms—may scale back on treating clients to major league baseball games, golf outings and the like after Congress and President Donald Trump ended a tax break for such entertainment.

The tax overhaul that Trump signed Dec. 22 eliminated a 50 percent deduction for business-related expenses for “entertainment, amusement or recreation.” Suddenly, luxury boxes at stadiums and arenas—along with theater and concert tickets—will be more costly for firms that use them to woo clients.

The loss of the entertainment deduction is a kind of counterpoint to the Republican Congress’s sweeping tax cuts for businesses. The overhaul slashed the corporate rate to 21 percent from 35 percent. It also created a new 20 percent deduction for many partnerships, limited liability companies, sole proprietorships and other “pass-through” businesses, whose owners pay individual tax rates on the income they earn.

One impact from the loss of the entertainment -expense deduction may be “smaller spends” on professional sports tickets.

But there’s still a bright side. Congress didn’t touch another break: Businesses still have a 50 percent deduction for clients’ entertainment meals—whether catered or at a restaurant.