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Internal Revenue Service
Provide America’s taxpayers top quality service by helping them understand and meet their tax responsibilities and by applying the tax law with integrity and fairness to all.
IRS Tax Topics
A FAQ put together by the IRS to help with tax-related questions.
Internal Revenue Manual
Contact your local IRS office
Index of Applicable Federal Rates
Find applicable federal rates (AFR) of interest established by the IRS.
U.S. Tax Code Online
Allows you to access the complete text of the United States Internal Revenue Code.
Comptroller of Maryland
Provides a gateway to sites that address specific topics tax related topics.
Personal Property & Real Property
Provides information on personal and real property taxation for the state of Maryland.
Federation of Tax Administrators
Provides services to state tax authorities and administrators.
Multi-State Tax Commission
Improves the fairness, efficiency and effectiveness of state tax systems as they apply to interstate and international commerce, while preserving state tax sovereignty.
International Tax Directory
A comprehensive index of web-based tax and accounting resources.
US Tax Treaties
This publication will tell you whether a tax treaty between the United States and a particular country offers a reduced rate.
Worldwide Governments on the Web
Comprehensive database of governmental institutions on the World Wide Web.