I received a one time payment from ssi I fill out application on 06/2016 and got a fully favorable letter I thought I would get back pay for when they found me disable 06/2016 got approved on 03/24/2019 so the only gave me 3 months one time payment have not got a award letter yet.

Hi,

I'm sorry, but I don't have nearly enough information to be able to analyze your case. It sounds like you filed for either Supplemental Security Income (SSI) or Social Security disability (SSDI) benefits and your claim was initially disallowed but has now been approved on appeal. If that's the case it's possible that you may have been awarded benefits for only a portion of the period of time from when you first applied. I have no way of knowing what your award covered, though, so hopefully your award letter will clarify matters. You should receive your award letter within a couple weeks of your first payment.

Best, Jerry