The fastest, safest way to almost double net income would be to make entering the Social Security and Medicare systems *voluntary*.
Right now, these two things halve the average paycheck, and because Washington discovered that as long as they pay the benefits on time, they can spend the incoming money any way they want.
If enrolling in SS and Medicare became voluntary, a LOT of young people would refuse to do so. And the systems would slowly die off.
The biggest loser would be the federal government, because it would lose a LOT of “free money” to spend on whatever they wanted.
Benefits would continue to be paid, using the scam system they do now. So nobody but the spendthrift feds would lose out.
I think your math needs some work. Social Security is 6.2% up to the SS wage cap (over $150k last time I checked) and Medicare is 1.45% with no cap. Together that’s 7.65%, with an equal amount then “paid” by the employer (although in reality the employee’s labor pays for it before it gets to the gross pay line).