***We would like your help***...Click Here! The Enhanced Fujita Scale went into effect in February 2007. The National Weather Service will now rate tornado damage according to the new guidelines. For more information on the EF-Scale...Click Here. For simplicity, the F-Scale will remain the main descriptor in this database and it will be implied that the ratings are based on the EF-Scale starting February 2007.
1 If you filed for a deduction for a bad debt or worthless security, the IRS suggests you keep your supporting tax records for 7 years. 2  Under these circumstances, you may generally wish to retain your supportive records for at least 7 years. 3  Employment Tax Records.ere are some basic record retention rules to think about for your business. 1  Business Income Tax Returns and Supporting Documents. 2  It makes sense to keep a final copy of your business income tax returns and related correspondence with the IRS permanently to help you prepare future or amended returns.
How long to keep records. You must normally keep records for at least 6 years from the end of the last company financial year they relate to. You may need to keep records longer if: 1  they show a transaction that covers more than one of the companyâs accounting periods. 2  the company has bought something that it expects to last more than 6 years, like equipment or machinery. 3  you sent your Company Tax Return late.