Individual taxpayers may file their Colorado income tax returns on the Internet through our Revenue Online service.
If after filing your
Colorado income tax return you find you owe state income tax rather than
mailing a check, you can pay using our electronic check or credit card
Online Tax Payment service. This online service includes an
administrative fee. For credit card transactions, the administrative
processing fee is the amount due plus $0.77 multiplied by 2.25%. If you
choose to pay with cash in the form of an echeck, the administrative
processing fee is discounted to $1.00 per transaction.
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