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Prior to starting InvestingAnswers, Paul founded and managed one of the most influential investment research firms in America, with more than 2 million monthly readers. While there, Paul authored and edited thousands of financial research briefs, was published on Nasdaq. com, Yahoo Finance, and dozens of other prominent media outlets, and appeared as a guest expert at prominent radio shows and i...

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Updated August 5, 2020

What is W-9 Form?

The W-9 form is a standard IRS form that certifies an individual's Social Security number and taxpayer identification number.

How Does W-9 Form Work?

Employers and all types of brokers (for example, securities dealers and real estate agents) are required to report details of transactions to the Internal Revenue Service (IRS). Employees and brokerage clients must submit a W-9 form to employers and brokers to verify their Social Security number (SSN) and tax identification number (TIN).

Why Does W-9 Form Matter?

The information on a W-9 form ensures that employers and brokers report income from payrolls and financial transactions to the correct taxpayer. Non-U.S. citizens who are legal residents may substitute a W-8 form.

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