In general, most software-as-a-service (SaaS) companies pay 'finder's fees' around 35 to 40% for first-year annual contract value (ACV) after receiving closed leads.
Because of the dense, competitive SaaS marketplace, this is still less expensive than launching a fully-fledged marketing department to find, acquire and close MQLs as a SaaS company. If your partners perform marketing activities but not sales activities, your SaaS company should pay your funding raisers 15 to 20% of your first-year ACV.
Put thought and time into your compensation strategy
This is a big decision. Don't sign an agreement that you downloaded on the internet. Involve a lawyer. Verify sure you work with someone who is a registered broker-dealer or make sure your finder's services don’t require broker registration (for example mentoring, advising, introductions, but not closing the round). Consider paying a fixed fee regardless of the outcome of the introductions to make this all easier.
Finally, CEOs and Founders who lead the fundraising themselves are most likely to be taken seriously. It's the best test to see if they will also be able to market and sell it to customers.