What does it mean to 'max out my standard deduction,' and can I add anything on top of it?

You do not max out the standard deduction; it is a fixed amount set by your filing status that the IRS adjusts for inflation yearly. If you are 65 or older or blind, you get an additional standard deduction amount stacked on the base, which many older filers overlook. Beyond that, the standard deduction is take-it-or-leave-it against itemizing. However, you can still claim above-the-line adjustments, like traditional IRA, HSA, and student loan interest deductions, on top of the standard deduction, because those reduce AGI before the standard deduction is applied. So the real strategy is combining the standard deduction with every above-the-line adjustment you qualify for, rather than trying to inflate the standard amount itself.