First contact your employer to make sure that this won't be an issue in the future.
You should file your W-2 as it is then file a Non-resident return for Colorado showing that you have no income that is taxable to Colorado in order to get your money back. Also file your Kansas resident return. As a full year resident all your income is taxable in Kansas.
To fix your 2019 return, you need to amend it:
To amend prior year return:
- Sign in to your account
- Scroll down to Your tax return & documents (you may need to select Show), select the tax year and then Amend (change) return.
- Carefully follow the instructions. Don't worry if your refund changes to $0. This is normal on amended returns.
- When finished, we'll give you instructions for printing and mailing your amended return as amendments can't be e-filed.
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