Can an Old Binance Account Get Cashback?

The honest answer

In most cases, no. Binance binds the referral relationship when the account is created, and it generally cannot be changed later. So an old account usually cannot start receiving cashback retroactively.

What you can do

Option 1: Create a new Binance account through a referral link and use it for trading you want cashback on.

Option 2: Use a sub-account where the structure allows it. Check the current Binance rules, as policies change.

Be skeptical of any service claiming it can attach cashback to any existing account with no conditions.