You know to contribute enough to your 401(k) to get the full company match. Maybe you’ve even adjusted your withholding so you’re not giving Uncle Sam an interest-free loan.

Yet you may feel the need to do even more, especially if you’re making the last big push toward retirement. These hacks allow you to shelter more money from taxes now and when you retire. In my latest for the Associated Press, the 4 crucial tax hacks you might not know.