If I win my claim, how far back will I be able to receive benefits?

For SSDI, the Social Security Administration (SSA) will pay benefits to the later of two dates: one year before your filing date or five months after your onset date. For SSI, SSA will pay benefits to the later of two dates: the month after your filing date or your onset date. In some circumstances, it may be possible to reopen a prior filing in order to receive more back pay.