The Irs received your federal income tax return, but needs more
information to verify your identity in order to process your tax return
accurately. The contact information below is only for taxpayers who
received Letter 4883C.
What you must do
Call the toll-free IRS Identity Verification telephone number at 800-830-5084.
Have a copy of the 4883C letter you received, a
copy of your prior year tax return (if you filed one) and your most
recently filed tax return (if you filed one), as well as any supporting
documentation for each years return (such as W-2’s, 1099’s, Schedule C,
Schedule F, etc.) when you call
