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IRS - Internal Revenue Service

Public Services / Government Office

1000 Liberty Ave,
Pittsburgh, PA 15222

(412) 395-5667

Call (412) 395-5667
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The Internal Revenue Service is the revenue service of the United States federal government. The government agency is a bureau of the Department of the Treasury, and is under the immediate direction of the Commissioner of Internal Revenue, who is appointed to a five-year term by the President of the United States.