You might want to reconsider this. Unless you're a licensed agent, or are party to the trade (buyer or seller), it's illegal to receive a referral fee/finders fee. You and the agent can get fined or go to jail.
Per RECO website:
REGISTRANTS PROVIDING REFERRAL COMPENSATION FOR LEADS TO AN UNREGISTERED THIRD-PARTY
Not permitted
Compensation may not be provided to an individual or entity that is not registered under REBBA 2002 if the compensation would be considered to be in furtherance of a trade. This would be contrary to the provisions of REBBA 2002 for the registrant that is offering the compensation (section 30 of the Act) and for the person receiving the compensation (section 4(2)(b) of the Act). The form of compensation does not matter. It could be a cash payment, a bottle of wine or a gift card. No form of compensation is permitted to an unregistered third party.
Remember, according to REBBA 2002, “trade” means a disposition or acquisition of or transaction in real estate by sale, purchase, agreement for purchase and sale, exchange, option, lease, rental or otherwise and any offer or attempt to list real estate for the purpose of such a disposition, acquisition or transaction, and any act, advertisement, conduct or negotiation, directly or indirectly, in furtherance of any disposition, acquisition, transaction, offer or attempt, and the verb “trade” has a corresponding meaning.