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.
Employment Tax Records. Businesses should keep employment tax records, such as W-2 forms, for at least six years, according to the NOLO website. You could face a tax audit for up to three years after filing the subject tax return.usinesses should keep employment tax records, such as W-2 forms, for at least six years, according to the NOLO website.