To find the mailing address for a completed paper tax return, consult the IRS website, which lists mailing addresses by return type, form number, type of mailing service and whether the return includes a payment. Mailing addresses apply to taxpayers and tax preparation professionals, according to the Internal Revenue Service.
A taxpayer with a federal tax return to send by mail selects an originating location and chooses from address options depending on the form he is submitting and whether payment is enclosed, explains the IRS. International addresses are included for American taxpayers living outside the United States. Tax-exempt organizations and government entities choose a mailing address depending on delivery service type.