Reviewing your case
The law requires that we look at every SSI case from time to time to make sure that people getting payments should still get them and are getting the right amount. We will tell you when it is time for your review. The review will be done by mail, phone or in person in the Social Security office.
We will ask you the same kind of questions you answered when you applied for SSI. We will need information about your income, your resources, your living arrangements and your bank accounts. Keep savings or checking account statements you get from your bank. You may need them when we review your case. Also, keep your pay slips if you work. We will need them, too. Do not wait for your review to tell us about any changes.You should report a change as soon as it happens. The section about reporting changes starts below. If you get SSI because of a disability, see "If you get better" for information about reviewing your case.
I believe it's about every 3 yrs . but don't take that as a definite .