PARSIPPANY, N.J., Feb. 25, 2013 /PRNewswire/ -- With a little more than one month left before the April 15 tax filing deadline, Jackson Hewitt Tax Service®, the nation's largest privately held tax preparation firm, is reminding taxpayers to look for tax deductions and credits not only when filing their 2012 returns but also on past returns. Starting March 1, 2013, Jackson Hewitt® neighborhood locations across the country are encouraging taxpayers to bring in their prior-year tax returns for a review. For those who self-prepared their returns or had a return prepared by someone else, this is a chance to make sure they claimed all credits and deductions they were entitled to—tax year 2012 returns included.