There’s a tax deadline tomorrow that effects employers and others. If you file paper copies of 1099s/1096s and/or W-2Gs/1096s, you must mail your copies by February 28th, not February 29th. If you electronically file your information returns, you have until April 2nd. These forms are sent to the IRS (either Kansas City or Austin, depending on the location of the entity).
Just to confuse things, the deadline for filing W-2s/W-3s to the Social Security Administration is February 29th. However, if you efile these forms you also have until April 2nd. These forms go to the SSA in Wilkes-Barre, Pennsylvania.