Return policy time limit

I don't think that there is a time limit. Call and ask

If you have the receipt you get cash back most times if you bought it with a credit card you can get it without receipt I don't know that there is a limit if you can prove you bought it there but you might get a credit instead of cash back if it's been a long time ago I have seen people bring things back a year later and I have brought things back more than 3 months later

Question answered

In-Store Purchase Return Policy Basics. Returns within 90 days of purchase and with a valid sales receipt will be exchanged, refunded in cash, credited to your account or refunded via The Home Depot store credit.