In the case of a member of the Armed Forces whose taxes were deferred pursuant to Internal Revenue Service Notice 2020–65, if such deferred taxes are withheld by the Secretary of Defense during the period beginning on January 1, 2021, and ending on April 30, 2021, the Secretary shall (contemporaneous with such withholding) make a payment to such member in an amount equal to the deferred tax so withheld. Any payment under this section shall be excluded from gross income of the member and exempt from taxation under any provision of Federal law.