SEC. 3. WHERE TO FILE AND HOW TO CONTACT THE IRS, MARTINSBURG COMPUTING CENTER
Internal Revenue Bulletin 1998-13 · 2026-10-03 edition · updated 2026-10-04 · United States
.01 All Forms W–4 filed magnetically or electronically are processed at IRS/MCC. Magnetic media containing Forms W–4 are to be sent to the following addresses:
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