An Adoption Taxpayer Identification Number (ATIN) is A short lived 9-digit number issued with the IRS to people who are in the process of legally adopting a U.S. citizen or resident little one but who can not get an SSN for that baby in time to file their tax return. https://keegana456p.qowap.com/92695299/an-unbiased-view-of-tax-dome