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.
Notary Fees. Standard notarial charges are often between $2 and $20 per signature, but mortgage closings are typically more expensive. Mobile notaries are allowed to charge additional fees for making the trip to your location, but some states limit the maximum trip fee.