IRS
IRS Tax Refund Status
http://www.irs.gov/Refunds/Where's-My-Refund-It's-Quick,-Easy,-and-Secure.
New York State Department of Taxation and Finance
http://www.tax.ny.gov/
NY State Tax
Refund Status: https://www8.tax.ny.gov/PRIS/prisStart
New York City Department of Finance
http://www.nyc.gov/html/dof/html/home/home.shtml