A tornado slides across Oklahoma. Image courtesy NSSL/NOAA. Continued vigilance and quick response to tornado watches and warnings are critical, since tornadoes can strike virtually anywhere at any time. Most tornadoes are abrupt at onset, short-lived and often obscured by rain or darkness.
Most nonprofits and charities must keep books and records for a minimum of six years from the end of the last tax year to which they relate. This retention period will be extended if returns are late-filed or if there is a notice of objection or appeal underway.
Business owners should keep tax information for at least four years. That includes employment records, gross receipts, invoices, bank statements, proofs of purchase, asset records, databases, emails and even voicemails.