The first thing I focus on is clarity. Most disputes I see come from ambiguity, not bad faith. If the buyer and seller don't agree on exactly how the earnout will be calculated, what metrics matter, or when payouts happen, you're inviting conflict. I make sure every term is spelled out in plain language. That means revenue definitions, timing, adjustments, and even the treatment of extraordinary events. It also means anticipating what could go sideways. If someone can argue over how to count revenue or a client cancellation, it's going to be a problem later.
One tip that has consistently helped is tying earnouts to metrics that the seller actually controls. You can have all the revenue goals you want, but if the seller has no influence over key outcomes, resentment builds fast and litigation risk rises. I also encourage including regular reporting and check-ins. When everyone sees the numbers in real time, misunderstandings get resolved immediately instead of festering. Finally, I make sure both sides walk away feeling like the earnout is fair. It isn't about getting every dollar. It's about creating an arrangement that incentivizes performance and keeps the relationship cooperative after closing. That approach has prevented more disputes than any legal trick I've ever seen.