Individual Tax Forms Document Form 521 Quarterly Estimated Tax Return Individual Net Profits and Earned Income Tax Form 521 Instructions Final Individual Tax Form 531 Local Earned Income and Net Profits Tax Return (2020 and Prior Years) 2020 Form 531 Instructions 2020 Blank Individual Form 531 Local Earned Income and Net Profits Tax Return 2019 Form 531 Instructions 2019 Blank Individual Form 531 Local Earned Income and Net Profits Tax Return Schedule X LST Exemption Certificate LST Refund Application Interest and Penalty Calculator None of the forms can be filed electronically. You must print them out and mail or bring them to the tax bureau.