The part about the check is if you want to send in a payment to lower your taxes due. You set up to have direct debit, if you send in the same payment by check you will have made a double payment. See the instructions for the payment agreement under How the Installment Agreement Works.
https://www.irs.gov/pub/irs-pdf/i9465.pdf
If you want you can call the IRS to double check on what you should do.
the following will help you get to a real person with the IRS:
The IRS telephone number is 1-800-829-1040, and they are available from 7 a.m. – 7 p.m. Monday thru Friday. The best time to call is early in the morning.
- The first question the automated system will ask you is to choose your language.
- Once you’ve set your language, do NOT choose Option 1 (regarding refund info). Choose option 2 for “Personal Income Tax” instead.
- Next, press 1 for “form, tax history, or payment”.
- Next, press 3 “for all other questions.”
-Next, press 2 “for all other questions.”
- When the system asks you to enter your SSN or EIN to access your account information, do NOT enter anything.
-After it asks twice, you will be prompted with another menu.
-Finally, press 2 for personal or individual tax questions. The system should then transfer you to an agent.
