Good question. A few comments on sales comp and SaaS.

The comp plan should be tied to desired rep behaviors and outcomes. Pay the most for the things that are best for the business (ie. larger deals or higher profit deals) and less for things that are not as critical.

Keep the plan as simple as possible, as that will ensure the reps focus on what matters most to the business. At the simplest end of the spectrum you have one commission rate on all revenues, then at the other end of the spectrum you have different rates on different products and services. The latter requires a commission guide to decipher and reps will default to what either pays the most or is easiest to close which is not always aligned with business goals. A good balance is often a straight line commission plan with accelerators at various thresholds and special incentives for deals that are highly desirable for the company. In my experience, if the rep can't forecast their commission check in their head, the plan is too complicated.

When it comes to SaaS deals, often commissions are front end loaded - ie. reps are paid only on the upfront contract, first year's revenue, or the the commissions on revenues decline over time. This keeps the sales person focussed on acquiring new accounts vs living on existing accounts.

Hope this helps. Good luck!
Eliot

PS - congrats on getting to $1M. It is the minority of start-ups that get there.