To know which mailing address to use when filing federal income tax returns, taxpayers should go to the Where to File pages on the IRS.gov website, reports the Internal Revenue Service. The main Where to File page has an interactive map and a table of state names that taxpayers can click on to find state IRS addresses. It also has a link to addresses that expatriates can use when filing tax returns from overseas.
Taxpayers can also use the addresses on the Where to File pages when corresponding about other tax matters, explains the IRS. The IRS state address charts have different addresses to use depending on whether taxpayers enclose payments or not, Forbes advises. Although many people send federal tax returns via first class mail and consider the postmark proof that they mail them on time, if the return is lost, the IRS has no proof that the taxpayer mailed it. It is safer for taxpayers to send returns by registered mail or certified mail. They can also safely use a private delivery service such as Federal Express, DHL Express or United Parcel Service.
Taxpayers should double check that they put enough postage on their tax return envelopes, advises the U.S. Postal Service. Any piece of mail over 1 ounce needs additional postage. Taxpayers should also type the destination and return addresses onto address labels or write them clearly by hand. They should avoid the last-minute rush before the deadline by mailing their returns in plenty of time.