IRS Form 8023 (Elections Under Section 338 for Corporations Making Qualified Stock Purchases) Fax Number

No. Once a valid Section 338 election is filed on Form 8023, it's irrevocable. That's a separate issue from missing the original filing deadline, which is a different problem with its own limited relief process, treat the decision to elect as permanent before you file.

Yes. Form 8883, Asset Allocation Statement Under Section 338, reports how the deemed sale price is allocated across the target's assets. You must still file Form 8023 by its deadline even if you don't yet have every detail needed for Form 8883, and Form 8883 itself gets attached to the relevant income tax return, it isn't faxed together with Form 8023.

For a 338(h)(10) election, Form 8023 must be filed jointly by the purchasing corporation and the common parent of the selling consolidated group (or the selling affiliate). If the target is an S corporation, every S corporation shareholder must sign, including any shareholder who isn't selling their shares.

Yes. Send only one Form 8023 per fax, and the total can't exceed 100 pages. The form must be signed before you fax it, and the IRS doesn't send a confirmation or receipt, so keep your fax transmission log as your proof of delivery. The number is dedicated to Form 8023 only, anything else sent to it won't be processed.

Limited relief exists under Revenue Procedure 2003-33: if all required parties can make the representations it specifies, the IRS grants an automatic extension under Treasury Regulation section 301.9100-3, but only if you request it within 12 months of discovering the missed election. It isn't guaranteed and doesn't cover every situation, so it's not something to plan around in advance.