2021 Schedule CO-420
Tax Year 2021 Schedule CO-420, Foreign Dividend Factor Increments (for unitary-combined only)
PDF format documents
2021 Instructions CO-420
Tax Year 2021 Instructions CO-420 Instructions Foreign Dividend Factor Increments (for Unitary-Combined Only)
2021 Instructions CO-421
Tax Year 2021 Instructions CO-421, Unitary Affiliate Schedule - Unitary Filing Only
2021 Form CO-422
Tax Year 2021 Form CO-422, Corporate Income Tax Return Payment Voucher
2021 Instructions BI-472
Tax Year 2021 Instructions BI-472, Non-Composite Schedule
2021 Schedule BA-402
Tax Year 2021 Schedule BA-402, Apportionment & Allocation Schedule
2021 Instructions BI-471
Tax Year 2021 Instructions BI-471, Business Income Tax Return