The IRS provides free tax return transcripts to taxpayers, as it explains on its site. Taxpayers can request their transcripts online through the agency's website.
If a taxpayer is unable to obtain his transcripts online, he can request one by mail. To do so, the taxpayer needs to fill out Form 4506 and supply his Social Security Number, date of birth and address from his last tax return. Transcripts are available for certain years, but the method the taxpayer used to file his return and whether or not he has a refund or a balance due can affect the current year's transcript availability, explains the IRS.