John Quincy Adams was the son of President John Adams and Abigail Adams. As a diplomat, Adams played an important role in negotiating key treaties, most notably the Treaty of Ghent, which ended the War of 1812.
1 So thatâs how long we advise in our charts. 2  Check with your state about state income tax, though. Some make you keep tax records a really long time: In Ohio, itâs 10 years.  The IRS can also ask for records up to six years after a filing if they suspect someone failed to report 25% or more of his gross income.
The ground rules: You should keep all your tax records for at least the three years the IRS has to audit you and assess any additional taxes. The IRS has six years if you understated your gross income by more than 25%. Some accounting organizations are recommending that all records be kept for a minimum of seven years.