Pass-Through Entities Search name Document Name 2021 CD-401S S-Corporation Tax Return Instructions 2021 CD-405 C-Corporation Tax Return Instructions 2021 CD-405 CW Instructions for Combined Corporate Income Tax Worksheet 2021 CD-419 Application for Extension for Franchise and Corporate Income Tax 2021 NC-478 Instructions for NC-478 Series 2021 NC-478 Instructions for Summary of Tax Credits Limited to 50% of Tax 2021 NC-478 Pass-through Schedule for NC-478 Series 2021 NC-478G Instructions for Investing in Renewable Energy Property 2021 NC-478G Tax Credit for Investing in Renewable Energy Property 2021 NC-K1 CD-401S Shareholder's Share of Income, Adjustments, and Credits 2021 NC-K1 Supplemental Schedule 2021 NC-PE NC Additions and Deductions for Pass-Through Entities, Estates, and Trusts 2021 NC-Rehab Historic Rehabilitation Tax Credits 2021 NC-Rehab Instructions Historic Rehabilitation Tax Credits 2022 CD-429 Corporate Estimated Income Tax