poreska prijava

1. (taxes, paperwork) tax return; tax declaration
   Poresku prijavu sam predao preko portala ePorezi. — I filed the tax return through the ePorezi portal.
   Knjigovođa mi popunjava poresku prijavu. — My accountant fills in my tax return.

The usual verb is "podneti poresku prijavu" — to file a tax return.