You should keep physical copies of all tax information for at least 7 years. The IRS can ask for any supporting tax documentation for 3 years after the filing date but up to 7 years in some cases. I always recommend that paper tax documentation be kept forever and let your heirs dispose of it (and even then I know of cases where heirs have used 30 year old tax returns to prove inheritances.)
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
