I developed a tracker to determine how much federal taxes I was already making so that i could determine the delta from the total 2025 safe harbor amount so i knew how much i needed to pay directly to the IRS quarterly to account for not enough taxes being taken out of my paycheck. I was looking to see if I was approaching the math correctly since Turbo tax generated quarterly estimated payment coupons in the amount of $3,185/quarter which would cause me to grossly overpay if my math was correct.
