One copy of Form 3115 attaches to Form 1120, and the 2nd copy (if necessary) files separately on paper directly to the IRS. The copy filed with Form 1120 is included in the electronic file. The 2nd copy isn't filed electronically; you need to paper file it with the IRS.
The IRS expects that the standard consent process would give taxpayers who seek consent under section 446(e) without ruling protection the opportunity to obtain this consent in a timely and efficient manner. The taxpayer's filing of Form 3115 would give the IRS adequate notice of the change in accounting method.
The filer is the entity or person required to file Form 3115, whether on its own behalf or on behalf of another entity. An applicant is an entity, a person, or a separate and distinct trade or business of an entity or a person (for purposes of Regulations section 1.446-1(d)), whose accounting method is being changed.
Once an incorrect accounting method has been used for two years, a Form 3115 is required to change accounting methods back to a correct method, or in this case, since not taking depreciation is incorrect, to begin taking depreciation a Change in Method Form 3115 must be filed.
One copy of Form 3115 attaches to Form 1120, and the 2nd copy (if necessary) files separately on paper directly to the IRS. The copy filed with Form 1120 is included in the electronic file. The 2nd copy isn't filed electronically; you need to paper file it with the IRS.