If your gross income is less than the amount shown below, you're off the hook! You are not required to file a tax return with the IRS.Filing StatusAge at December 31, 2012Gross IncomeSingleUnder 65$9,75065 or older$11,200Married Filing JointlyUnder 65 (both)$19,50065 or older (both)$21,800Under 65 (one)$20,650Married Filing SeparatelyAny$3,800Head of HouseholdUnder 65$12,50065 or older$13,950Qualifying Widow(er)Under 65$15,70065 or older$16,850