Form SS-4 is used for which of the following?

Form SS-4 is utilized for the purpose of applying for an Employer Identification Number (EIN), also referred to as a Federal ID number. This form is crucial for businesses and entities that need to report financial information to the IRS, including taxes and other employment-related documentation. Obtaining an EIN is a foundational step for any business that plans to hire employees, open a bank account, or file tax returns.

The process of acquiring an Employer Identification Number through Form SS-4 helps identify a business entity for federal tax purposes and is necessary for compliance with federal tax regulations. This identification is essential not only for the employer but also for accurately reporting income and tax liabilities related to payroll.

Comparatively, reporting employees' wages and taxes would involve different forms, such as Form 941 or Form W-2, rather than Form SS-4. Verifying eligibility for employment is primarily covered under Form I-9, which is not related to the application for a Federal ID. Additionally, transmitting wage and tax statements pertains to forms such as W-2 and W-3, and again does not involve Form SS-4. Thus, the focus of Form SS-4 firmly aligns with the application for an Employer Federal ID, making it the correct answer.