Buying Online

[ray1970]

Yes and no.

You shouldn’t be charged any tax by your FFL as he didn’t sell you anything. Likely the out of state business you purchased from isn’t going to tax you either.

But, the state of Colorado does ask that you report all of your untaxed online purchases when you file your taxes so that you can pay the taxes then.

Clear as mud?

[Circuits]

Yes and no.

You shouldn’t be charged any tax by your FFL as he didn’t sell you anything. Likely the out of state business you purchased from isn’t going to tax you either.

But, the state of Colorado does ask that you report all of your untaxed online purchases when you file your taxes so that you can pay the taxes then.

Clear as mud?

What Ray said.

Since 1937, CO law requires all residents to pay "use tax" on any goods purchased on which CO sales tax was not already paid. There is a special form (DR0252) for it and everything.

[BladesNBarrels]

What Ray said.

Since 1937, CO law requires all residents to pay "use tax" on any goods purchased on which CO sales tax (actually the State allows a credit for Sales Tax paid in another jurisdiction) was not already paid. There is a special form (DR0252) for it and everything.

And, the State is now making it easier and more convenient by allowing an annual Use Tax filing along with your Income Tax filing.
Currently, all that is required is the 2.9% Use Tax on the State Form, but if you live in a Home-Rule City, you need to check with them regarding their Tax Regulations.
Jake Jabs has been leading an effort to reduce the number of jurisdictions that require separate filings for years.