K 210 2026

1. Click ‘Get Form’ to open the K-210 in the editor.
2. Begin by entering your name and Social Security Number at the top of the form.
3. Fill in the CURRENT AND PRIOR YEAR INFORMATION section, starting with line 1, where you will input the amount from line 19 of your 2020 Form K-40.
4. Proceed to line 2 and multiply the amount from line 1 by 90% (or by 66 2/3% if you are a farmer or fisher).
5. Continue filling out lines 3 and 4 with your prior year’s tax liability and total Kansas income tax withheld respectively.
6. Move to PART I – EXCEPTIONS TO THE PENALTY. Complete lines 5 through 9 based on your cumulative withholding and timely paid estimated tax payments.
7. In PART II – FIGURING THE PENALTY, calculate underpayment on line 10 and follow through lines 11 to 17 for penalty calculations.

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