Today is the deadline to file your federal along with your New York State income tax returns and New York is extending the hours for its tax filing information call center. Normally, the center fields calls weekdays from 8:30 a.m. to 4:30 p.m. That has been extended to 7:30 p.m. The number for tax filing answers is (518) 457-5181. According to the Department of Taxation and Finance, as of Monday, helpers fielded over 316,000 questions with at least an additional 28,000 calls expected before the filing deadline.