Common IRS Forms

Below is a list of common IRS forms. For assistance in preparing these forms, please contact our office.

W-9 – Request for Taxpayer Identification Number and Certification
Used by PAYORS to obtain important tax information from PAYEES who are being paid in the ordinary course of a PAYOR’S business dealings.  Required for all payments for services for which the cumulative annual amount exceeds $599.

Form SS-4 – Application for Employer Identification Number
Used by a new entity (corporation, partnership, estate, trust, gift, household employer, etc.) to establish a tax account ID number and establish a filing requirement with the IRS.

Form SS-4 – ONLINE – Application for Employer Identification NumberObtain an EIN in just minutes!

Form 2553 – Election by a Small Business Corporation
Used by corporations or certain LLCs to elect to be taxed as a Small Business (“S”) Corporation, eliminating double taxation of profits and dividends.

Your Federal Taxpayer Identification Number (TIN)

Your Federal TIN (taxpayer identification number) is either your social security number, your employer identification number (EIN), or your individual tax identification number (ITIN), and must be included on every tax return, payment, application, or other document submitted to the DOR.

EIN is required for:

  • Anyone paying wages to one or more employees
  • Anyone required to withhold federal taxes on income, other than wages, paid to a nonresident alien (individual, corporation, partnership, etc.)
  • Trusts, except IRA trust
  • Estates
  • Partnerships
  • REMICs (real estate mortgage investment conduits)
  • Corporations
  • Nonprofit organizations (churches, clubs, etc.)
  • Farmers’ cooperatives
  • Plan administrators

The IRS allows businesses to obtain an EIN online that may be used immediately. For more information, go to and click on the “Employer ID Numbers (EINs)” link. You may also obtain an EIN from 7:00 am-10:00 pm local time Monday through Friday at (800) 829-4933, or fax at (215) 516-3990. Failure to supply a federal TIN on tax returns or payments will result in a $5 penalty for each submission.