There are several fax numbers for the Internal Revenue Service depending on whether the matter is business or personal and the geographic location where the taxpayer resides, explains the IRS. The best way to determine t... More »

To request a prior year federal tax return, fill out Form 4506-T, enclose a check or money order for $50 and return it by fax or mail to the Internal Revenue Service, advises TaxACT. Mail the form and payment to the corr... More » Business & Finance Taxes

Individuals can obtain complete prior year tax returns by filing Form 4506 and paying a fee, according to the IRS. As of 2015, the fee for requesting a copy of a tax return is $57. A completed Form 4506 and payment is ma... More »

Both Social Security numbers and EINs are identification numbers to allow the IRS to enforce tax laws and rules, but a Social Security number is for an individual taxpayer, while an EIN number is for business taxpayers. ... More » Business & Finance Taxes

A taxpayer can call the IRS with tax questions or visit a local Taxpayer Assistance Center for face-to-face assistance, according to the Internal Revenue Service. The Interactive Tax Assistant is an automatic tool that r... More » Business & Finance Taxes

When the Internal Revenue Service believes that a tax return was filed under a stolen identity, it suspends processing of the paperwork and mails an identity verification letter to the taxpayer, according to the IRS. The... More » Business & Finance Taxes

To find a lost or misplaced Employer Identification Number or taxpayer identification number, view the computer-generated notice issued by the Internal Revenue Service during the application process, advises the IRS. Alt... More »