C-Corporation Income
Technical Support and Helpful Documents
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2D Bar Code -- Not supported for tax year 2009
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Federal/State Electronic Filing -- Steve Asbell, (303) 866-3889 or sasbell@spike.dor.state.co.us
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Forms Development -- FormsDevelopment@spike.dor.state.co.us
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Form Information and Specifications for Tax Professionals | PDF
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DR 5315, Tax Payment Coupon Specifications–No Scan Line | PDF
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DR 5317, Specifications for Validation Area | PDF
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DR 5325, Tax Payment Coupons–With Scan Line | PDF
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DR 5325G, 6 x 10 Tax Payment Coupons Grid | PDF
Draft Forms Links
Corporate E-file Software Developer Information
Colorado's corporate e-file program follows the rules and guidelines established by the Internal Revenue Service in their Publication 4164 (Modernized e-file). Below are links to our XML schema and other documentation that can be used by software developers for Colorado Form 112 corporate e-file. Requests for the Colorado test package and questions can be directed to Steve Asbell at 303-866-3889 or by email to sasbell@spike.dor.state.co.us.
2011
Form 112 Schema map (xls)
Colo Business Schema v2.62 (zip)
Business Income Test Package (zip)
Form 112 Rules Error Codes (xls)
2010
DR 1305 Schema Map (XLS File)
Forms Based Schema (XLS File)
2010 Schema ZIP File
MEF Test Package
Hott Test Package
Coolbooks Test Package
Gametime Test Package
ACME Test Package
2009
Accepted Software | PDF File
Schema V2.1.1 | ZIP File
2008
Business Rule Document | XLS File
Map of Form 112 to Schema | XLS File
2008 CO112 Schema V1.1 | ZIP File
Software Accepted by Colorado | PDF
2007
Map of Form 112 to Schema | XLS File
Sample Instance Document | XML File
2007 CO112 Schema V1.2 | ZIP File
Software Accepted by Colorado | PDF