How do I fold an MSP I bought into my own MSP?

Buying another MSP is one step; folding it in is another. The harder part starts after closing, when two sets of tools, agreements and habits have to become one business. Most of the risk is in the first months, because the clients you bought chose the old provider and can leave. Many owners move slowly where clients can see the change, and quickly where they cannot.

Start by changing nothing the client sees

Keep the same people, phone number, ticket route and invoices for a while. Spend the early weeks learning how each client is actually served: what is promised, what is done informally, and what the previous owner did that never made it into a document. The BDC guide to post-acquisition integration is a useful general frame.

Consolidate tools in a sensible order

Remote monitoring, ticketing, backup and security tools each affect clients differently. Backup and security changes carry the most risk, so test them on a few clients before moving others, and keep the old backups until the new ones are proven. Moving administrator access needs care, as in how access is handed over.

Agreements and service levels

Do not rewrite every client agreement on day one. Many owners move clients to their own terms at renewal, and explain any change before it takes effect. Watch for service promises in the old agreements that your team may not be able to meet. Ask your lawyer how to change terms without breaking what the client already agreed to.

Teams and clients

Technicians who know the acquired clients are your best protection. Be clear about roles and reporting early. The reasons technicians stay or go are covered in whether technicians stay after you buy. Tell each client what is changing, when and why, in your own voice.