How long do you have to keep records from a business that has closed?

My husband had a small construction business in Calif. He shut it down after 18 years. We have a ton of paperwork, i.e. payroll, invoices, tax stuff. How long do we have to keep this stuff? I think the oldest is from 1998. I don’t know if it makes a difference but it was a corporation.
By: Sue D
About the Author:
Website content

February 12th, 2010 at 4:21 am
Kansieo.com
7 years is the limitation
February 15th, 2010 at 12:58 am
Website content
My mother did taxes and she had to keep all business records for 7 years.
Box them according to years, then as each one passes the 7 year mark shred them and dispose of them.