Definition and synonyms of poor from the online English dictionary from Macmillan Publishers Limited.
See IRS Publication 552, Recordkeeping for Individuals, for more information. Six Years. If you may have under-reported income by 25 percent or more, then you'll need to keep tax returns and all related information for six years.
Some special circumstances require that tax records be kept longer than four years. If you failed to report income, and it is more than 25 percent of the gross income you reported; then you need to keep the records relating to that income for six years.