Social Security's May payment schedule is normal for most recipients. But Supplemental Security Income beneficiaries will get two checks this month.

Specifically, if you make these three moves, you'll end up with less money flowing into your bank account each month as a retiree. The first move guaranteed to shrink your monthly Social Security check is claiming benefits before age 70. While you can start getting benefit checks as young as 62, this will make your payment much smaller.

Here is the May Social Security payment schedule for retirement, disability, and survivor beneficiaries, as well as those who receive Supplemental Security Income (SSI).