IRS:

Internal Revenue Service

IRS Phone Numbers

Where to File Tax Returns

Local IRS Offices

Form 8822 - Change of Address

 

Tax ID Numbers:

Taxpayer Identification Number (ITIN)

Form W-7

 

Tax Rates & Withholdings:

Tax Rate Schedules

Federal Withholding Tax Calculator

State Individual Income Tax Rates

State Sales Tax Rates

 

Foreigners in US:

Tax Treaties

Pub. 519 - U.S. Tax Guide for Aliens

Foreign Students and Scholars

Liability for Social Security/Medicare Taxes

Refund of Social Security Taxes Withheld in Error

 

Americans Abroad:

Currency Converter

Pub. 54 - Tax Guide for Americans Abroad

Annual Foreign Exchange Rates

International Social Security Agreements

International IRS Offices

U.K. Inland Revenue

 

International Tax Rates

Wikipedia International Tax Rate Chart

 

Incorporation and Entity Formation Services

Attorneys Corporation Service

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Payment Options:

IRS - E-Payment Options

EFTPS - Electronic Federal Tax Payment System

IRS Payment Plan/Installment Agreement

Corporate Electronic Deposit Requirement

 

Other:

Currency Converter

Zip Code Lookup

Salvation Army Valuation Guide

Domestic Per Diem Rates

Foreign Per Diem Rates

 

 

Tax Research & Links:

Tax Topics

U.S. Tax Court

Legal Info Institute of Cornell

Uncle Fed Tax Info

Government Information

State & Local Tax Websites

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