Filing folder, in particular for lateral files

File folder (A) for lateral files, comprising a front wall (1) and rear wall (2) which are foldable against one another about a central fold line (3), wherein on a border edge (4), which border edge runs perpendicular to said central fold line (3), one of said walls has a text tab (F) formed in one-piece with said one wall and which projects beyond a corresponding border edge (4) of the other of said walls in a first folded position of said tab, the tab comprising two strips (a, b) which two strips are located congruently one above the other in said first folded position of said tab, wherein the two strips (a, b) are foldable out of said first folded position into a second folded position (FIG. 3) in which second folded position said two strips are located in one common level one next to the other on an inside of the one wall, and wherein the two strips (a, b) are fixed adjacent to and on the inside of said one wall in both the first folded position in which said two strips are located congruently one above the other and in the second folded position in which said two strips are located in said one common level one next to the other, respectively.