The First 90 Days After Acquiring a SaaS: A Playbook

The acquisition is done. Money has changed hands. Now what? The first 90 days set the trajectory for everything that follows. Here's a week-by-week playbook based on patterns we've seen from successful acquirers.

Week 1-2: Secure and document. Transfer all accounts, domains, and credentials to your control. Set up your own admin accounts, enable 2FA everywhere, and revoke the seller's access (except for agreed support channels). Document every system, service, and integration the product uses. You'll be surprised what wasn't in the asset list.

Week 3-4: Listen and learn. Email customers introducing yourself. Keep it brief: "Hi, I'm the new owner, nothing is changing, I'm here to make things better, reach out if you need anything." Read every support ticket from the last 6 months. Talk to the 10 most active customers. Don't promise anything, just listen.

Month 2: Stabilize. Fix the most critical issues identified in your due diligence. Update vulnerable dependencies. Fix broken features that customers have complained about. Set up proper monitoring and alerting so you know when something breaks before customers tell you.

Month 3: Optimize. Now you can start making changes. Focus on the highest-impact, lowest-risk improvements. Common quick wins: improve onboarding (reduces churn), add missing documentation (reduces support load), optimize pricing page (increases conversion), and implement basic email sequences (reduces churn and drives expansion).

What not to do in the first 90 days. Don't redesign the product. Don't change pricing. Don't remove features. Don't migrate to a new tech stack. Don't ignore customer support. Every one of these has killed post-acquisition value for buyers we've talked to.

Tracking success. Set up a simple dashboard on day one: MRR, churn rate, new signups, support tickets, and uptime. Review weekly. If any metric moves more than 10% in either direction, investigate immediately. The goal for the first 90 days is stability, not growth.

The seller transition. Use the support period wisely. Have weekly calls with the seller. Ask about the things that aren't in the code: why certain decisions were made, which customers are high-maintenance, what features were requested but never built, and what the seller would have done differently.

A realistic timeline. Most successful micro-SaaS acquirers see meaningful improvements starting in month 4-6. MRR growth acceleration typically begins in month 6-9. If you're expecting immediate returns, recalibrate. This is a marathon, not a sprint.