Vince age 63, retired and began receiving retirement benefits on January 1,2020. The benefits will be paid for the joint lives of Vince and his wife, KIKI age 66. Vince had 40300 in after tax...

Vince age 63, retired and began receiving retirement benefits on January 1,2020. The benefits will be paid for the joint lives of Vince and his wife, KIKI age 66. Vince had 40300 in after tax contributions to his qualified plan and had received no distributions prior to retirement. What is their monthly excludable tax free amount.