If you are single and live in NH and you earned more than $2400 in interest and dividend income (other than income specifically exempted by statute such as interest on federal obligations and NH municipal or state obligations) you do have to file a return. There are additional exclusions, such as an exclusion for blind or elderly (65+) that could reduce your taxable income to zero, but you still have an obligation to file. Check the instructions on the NH Department of Revenue website for Form DP-10. Turbo Tax gave me incorrect advice.