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.
Answer: For tax purposes, you need to keep your business records for six years. Actually, the Canada Revenue Agency states that if you file your return on time, keep your records for a minimum of six years after the end of the taxation year to which they relate (emphasis added).