An ITIN, or Individual Taxpayer Identification Number, is a tax processing number only available for certain nonresident and resident aliens, their spouses, and dependents who cannot get a Social Security Number (SSN). It is a 9-digit number, beginning with the number 9, formatted like an SSN (NNN-NN-NNNN).
To have a document authenticated: 1  The document must be either notarized by a DC notary public or signed by an authorized head of a DC government agency. 2  The Office of Notary Commissions and Authentications does not notarize documents.3  The cost is $15 per document, payable by check, money order or Visa or Master Card. The document must be either notarized by a DC notary public or signed by an authorized head of a DC government agency. 2  The Office of Notary Commissions and Authentications does not notarize documents.
However if you are asked to notarize multiple signatures for the same person on several copies of an identical document, you may charge $2.00 for notarizing each of that person's signatures on the original or first copy of the document, and may demand and receive a maximum of $1.00 for each time the same person needs their signature notarized on additional copies of the same document.