LA DoR R-210R 2026

1. Click ‘Get Form’ to open it in the editor.
2. Begin by entering your name and Social Security Number as shown on your tax return. Ensure accuracy for proper identification.
3. In Section 1, compute your required annual payment by filling in your 2020 tax liability and your 2019 tax liability. Enter the smaller amount from these two lines.
4. Proceed to Section 2, where you will calculate the underpayment. Fill in the required payment based on the number of payments indicated in Section 1.
5. For each payment period, enter the amounts paid and any carryforward amounts from previous periods as instructed.
6. In Section 3, review exceptions that may apply to you. If applicable, follow instructions to determine if you need to file this form.
7. Finally, complete Section 4 by calculating any penalties based on your underpayment amounts and dates of payment.

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