The decision to have the paper checks bear Trump’s name, in the works for weeks, according to a Treasury official, was announced early Tuesday to the IRS’s information technology team. The team, working from home, is now racing to implement a programming change that two senior IRS officials said will probably lead to a delay in issuing the first batch of paper checks. They are scheduled to be sent Thursday to the Bureau of the Fiscal Service for printing and issuing.

Computer code must be changed to include the president’s name, and the system must be tested, these officials said. “Any last minute request like this will create a downstream snarl that will result in a delay,” said Chad Hooper, a quality-control manager who serves as national president of the IRS’s Professional Managers Association.

A Treasury Department representative, however, denied any delay and said the plan all along was to issue the checks next week.

“Economic Impact Payment checks are scheduled to go out on time and exactly as planned—there is absolutely no delay whatsoever,” the representative said in a written statement.