... the Schedule A (Form 940) instructions or visit IRS.gov.Change of address. Use Form 8822-B, Change of Address—Business, to notify the IRS of an address change.RemindersFederal tax deposits ... taxpayers and to make sure that businesses comply with federal tax laws. A unique nine-digit EIN is assigned to all corporations, partnerships, and some sole proprietors. Businesses that need ... business is a partnership, do not count its partners.If your business was sold or transferred during the year, each employer who answered “Yes” to at least one question above must file Form...