Information For...

For you and your family
Standard mileage and other information

Forms and Instructions

Individual Tax Return
Instructions for Form 1040
Request for Taxpayer Identification Number (TIN) and Certification
Request for Transcript of Tax Return


Employee's Withholding Allowance Certificate
Employer's Quarterly Federal Tax Return
Employers engaged in a trade or business who pay compensation
Installment Agreement Request

Popular For Tax Pros

Amend/Fix Return
Apply for Power of Attorney
Apply for an ITIN
Rules Governing Practice before IRS

Guides for Doing Business with the Government

Central Contractor Registration - Contractor registration enables you to register once, using a single method, to do business with the Government. It also enables the Government to collect contractor information in a standardized and centralized way that eliminates duplication and inefficiency.

Government Contracting - Federal, state and local governments offer businesses the opportunity to sell billions of dollars worth of products and services. Many government agencies require that some percentage of the procurements be set aside for small businesses.

Federal Business Opportunities - Single government point-of-entry (GPE) for Federal government procurement opportunities over $25,000.

Small Business Administration (SBA) - Information on doing business with the government (i.e., Basics, Understanding the Rules, how to Find Opportunities, etc.).

Minority-Owned Businesses Selling to the Government - From your first contract to stepping up to bid on a large government or commercial contract, you'll find the information you need to help you get started.

Women-Owned Businesses Selling to the Government - The gateway for women-owned business selling to the federal government.

General Services Administration (GSA) - Selling to the Government guide.

How to do business with Treasury - Doing Business with the Department of the Treasury is designed to assist small businesses in doing business with the Department of the Treasury and its bureaus. This guide includes information about the bureaus within the Treasury as well as information about the Federal procurement process used by the Treasury to acquire goods and services.

Cornette Library - General guide for doing business with the government

IRS Acquisition Procedure (IRSAP) - IRS supplement to the Federal Acquisition Regulation (FAR) and Department of Treasury Acquisition Regulation (DTAR). The IRSAP contains policies, procedures, and contract clauses approved for use in IRS procurements.

Guide to Preparing and Submitting Unsolicited Proposals -This guide has been prepared, pursuant to Federal Acquisition Regulation (FAR) Part 15.6, to inform potential offerors of unsolicited proposals about the Internal Revenue Service (IRS), its functions, and how it handles unsolicited proposal submissions.



Questions about the Procurement information on this site, please contact the webmaster.
Contact the Office of Procurement for other Procurement related questions.