Employers are required to file their W-2 and W-3 copies to the Social Security Administration by January 31 in 2017. In the past, employers had until the end of February to file W-2s if they were paper filing and until the end of March if they were electronically filing. Extensions of time to file W-2s and W-3s is no longer automatic. The SSA may grant one 30 day extension in extraordinary circumstances or catastrophe.
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