Is travel with an end date prior to July 1, 2021, or an entertainment event prior to July 1, 2021, subject to tax withholding?

Reimbursement for travel with an end date prior to July 1, 2021, or entertainment events with a date prior to July 1, 2021, will not be subject to tax withholding. However, sound business practice calls for reimbursement requests to be submitted in a timely manner.