Ask HN: Consultants, how do you handle commissions?

Commissions, like most money issues are a taboo topic but we believe in transparency so my network of developers and designers is collecting 10% of the revenue for up to a year on a closed lead.

It's a simple method to become more anti-fragile in general (think illness, time for learning new technologies, "basic research" etc.) but frankly we all are more technical than business people so we don't know how recruiters/HR/sales folks specifically handle commissions.

Apart from the fiscal side, does anyone use specific tools or workflows that help with creating a transparent and fair process (e.g. integrating your time-tracking/invoicing tool with a service like zapier)?