Every time he stepped away from his desk last week, the supervisor of the Town of Greenburgh returned to a voice mail message from a resident wanting to know if it was possible to prepay at least a portion of the 2018 property tax bill in the waning days of 2017.

“I’m getting swamped with many, many calls, usually one an hour, from people who want to prepay their taxes,” said the supervisor, Paul J. Feiner, who manages the Westchester County town of 92,000 people about 25 miles north of Midtown Manhattan. “Practically all the officials in Westchester are being swamped with calls.”

The messages were prompted by the passage of the Republican tax plan that caps the federal deduction for state and local taxes such as income taxes and property taxes at $10,000 for 2018. The House and the Senate voted along party lines this week to approve the $1.5 trillion tax bill , and President Trump signed the measure into law Friday.

In wealthier, high-property-tax towns like Greenburgh, nearly all the residential property tax bills are more than $10,000. By prepaying next year’s property taxes now, homeowners are hoping to deduct the payments on their 2017 federal taxes.