Ticket Record Retention Policies

Hello!

We're a young organization and have just implemented our employee handbook which includes a record retention policy. 

What jumped out is there's nothing addressing box office documents (deadwood, subs orders - except "information and data needed for its operations - subscription documents).

While each state has different laws, etc is anyone willing to share what your specific policies are with respect to time limits for box office items? 

At prior venues I've followed:

Sales Records (box office, concessions, gift shop, cafe) - 5 Years

Cash and credit card receipts - 3 years

Deadwood - 3 years

Would love to know what has worked for others.

Thank you for sharing!