Form 1120 vouchers Customer Support Updated October 11, 2022 19:39 Those who do not use EFTPS must contact the IRS to get a specially printed copy of the form, because it is machine-readable, by page 4 of the Form 1120 instructions. This information applies to all years of the UltimateTax software. Related articles Where to mail corporate returns Mailing Information for Corporate Returns Form 1120/1120S/1065 entries are red when using TB sheet