Tax Information
Forms and Instructions
Federal Taxes
Forms and instructions, information on tax laws, and answers to frequently asked questions.
Colorado Taxes
State of Colorado tax forms, instructions, and information
Other States' Forms
Other states’ tax forms, instructions, and information
Previous Years' Forms
Prior years’ federal forms and instructions
Where to call or go for help
For help with individual returns, call the IRS at 1-800-829-1040
For help with business tax questions, call the IRS at 1-800-829-4933
Nearby IRS offices
1999 Broadway, Denver, CO 80202
303-466-1675
Monday - Friday, 8:30 am - 4:30 pm
Call for services provided
301 W. Howes St., Fort Collins, CO 80521
970-221-0688
Monday - Friday, 8:30 am - 4:30 pm (closed 12:30 pm - 1:30 pm)
Call for services provided
Books
Click on titles to check availability or to place a hold.
The Ernst and Young Tax Guide
J.K. Lassers's Your Income Tax
Taxes for Dummies
Deduct It! Lower Your Small Business Taxes
Fishman, Stephen
Home Business Tax Deductions: Keep What You Earn
Fishman, Stephen
How to Pay Zero Taxes
J.K. Lasser's 1001 Deductions
Stand Up to the IRS
Daily, Frederick W.
J.K. Lasser's Small Business Taxes
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