Is there a reason why I'm having to fill out a form 511? Did I make a mistake somewhere?

[ryan-miller11]

I've never had to file a form 511 in the past. I am unfamiliar with this form and don't want to delay my refund.

[DoninGA]

There is no such IRS Form 511 so it must be a state form.  Since no one can see your tax return which state program are you using?

[VolvoGirl]

Is it maybe IRS form 15111?

IRS Letter 15111
https://www.irs.gov/pub/irs-pdf/f15111.pdf

CP 09 is the IRS Notice that issues the form 15111. Use the link below to the CP 09
https://www.irs.gov/individuals/understanding-your-cp09-notice

And see this post for more info especially page 4
https://ttlc.intuit.com/community/after-you-file/discussion/anyone-else-need-help-with-finding-the-f...

[ryan-miller11]

Oklahoma 

[ryan-miller11]

Oklahoma

[DoninGA]

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@ryan-miller11 wrote:

Oklahoma

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The Form 511 is the Oklahoma Resident Income Tax Return.  If you are a resident of Oklahoma and have taxable  income you are required to file the state income tax return.