Copies of tax returns Forever
Employee expense records 3 years
Tax/legal correspondence Forever
Personal investment records 6 years 
Audit reports Forever 
IRA Records 6 years after withdrawls 
Contracts and leases Forever 
Real Estate records Forever 
Paid vendor invoices 3 years 
Corporate minutes Forever 
Employee payroll records and stock records 3 years 
Depreciation schedules Tax life of asset plus 3 years 
Bank Statements 6 years 
General Ledger & journals 6 years 
Sales records & journals 6 years