Instructions on how to make an estimated tax payment, extension payment, or return balance due on Colorado Revenue Online.
Visit Colorado Revenue Online https://www.colorado.gov/revenueonline/_/

From the home screen select Make a Payment
The easiest way to pay is by E-Check. The fee is $1. There is a free option by selecting EFT Payment, but you have to register for an account and wait 3-5 business days. If you select Debit or Credit card they tack on $.75 plus 2.25%


Account Type - Individual Income Tax
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ID Type - Social Security Number
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ID - Enter your SSN
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Filing Period - Make sure to select the correct tax year. The default is the current date, but make sure to select 12/31/2021 if you are paying 2021 taxes. DO NOT SELECT 2022 IF YOU ARE PAYING 2021 TAXES!!
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Payment Type - Select Return Payment if paying taxes due with your tax return, Select Estimate if paying quarterly estimates for the current year, select Extension if you are making an extension payment.
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Make sure to print your confirmation of payment when finished.
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