This answer is false and misleading. If you have non-taxable interest, NH will require you to file a DP-10, even though you may owe no taxes (e.g., interest from NH munis). I am presently unwinding a five year mess where NH is requiring me to file back returns proving I owe no taxes. TurboTax MUST allow NH residents to print the form even if no tax is owed. NH requires that these be mailed. Going back five years to try to remedy this is a major pain. Please fix the software.
