Historic American Buildings Survey, Creator, and John Magruder. Dunblane, Westphalia Road, Forestville, Prince George's County, MD. Forestville Maryland Prince George's County, 1933. Documentation Compiled After. Photograph. Retrieved from the Library of Congress, https://www.loc.gov/item/md0522/.
If you are 65 or older, your gross income needs to be $13,950 or more for you to file. If you are a widow/widower with dependent children you would qualify to file taxes if you are younger than 65 with a gross income of $15,700 or more.
For the 2016 tax year (filed in 2017), single filers under the age of 65 who earn more than $10,350 and singles over 65 with more than $11,900 in earnings had to file a tax return. Head of household filers under 65 making more than $13,350 and those older than 65 with head of household status plus more than $14,900 in taxable income were also required to file.