This form is a payment voucher that is used with Form 1040, 1040A, or 1040-EZ. If you have a balance due on your return, the IRS encourages you to send Form 1040-V along with your payment to speed up processing. The H&R Block software will generate the form for you.
When sending a payment to the IRS, in all cases, do not send cash. If paying by check, do the following:
Make check payable to the “United States Treasury.”
Make sure your name and address are on the check.
In the memo section of the check, write:
“2010 Form 1040” (or write”2010 Form 1040A” or “2010 Form 1040EZ”, if you are filing one of those forms) on your check
Daytime phone number
Social Security Number (SSN) (if filing a joint return, enter the first SSN shown on the return)
When writing the payment amount on the right side of the check, write the number like this: $XXX.XX. Do not use a dash ($XXX--— or xx/100.
For more information, see this topic: