File Colorado Form 158-I
Prepare Colorado Form 158-I now with TaxAct
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Colorado Form 158-I must be used only when you are not able to pay online or by EFT. Form 158-I must be submitted together with your SSN, 2013 DR 0158-I, a check or money order. The documentation must be mailed to the Colorado Department of Revenue, Denver, Colorado 80261-0008.