Deavo
BuyingExpert answer · 1 min read

Who owns the ad accounts a marketing agency runs for its clients?

It varies from client to client. Some ad accounts belong to the agency, and the client only sees reports. Others belong to the client, with the agency added as a partner. The client agreement and the way each account was opened usually show which it is, and a lawyer can read the terms.

A buyer of a marketing agency may assume the agency owns the accounts it runs. Often it does not. The question changes what the buyer is getting, because an account the client owns can leave with the client. The marketing agency due-diligence guide raises it as a risk. Here is how to answer it in practice.

Two arrangements, very different consequences

In one arrangement the agency opens and owns the account, pays the platform and bills the client. In the other the client owns the account and gives the agency partner or manager access. In the second case the agency holds no account it could sell. Ask which arrangement each client has.

Check how each account was set up

Ask for a list of accounts by client, showing who is the account owner, whose payment method is attached and which agency staff have access. Then compare the list with the client agreements. If the paperwork says one thing and the account shows another, ask the seller to explain. Reading the contract terms is a job for your lawyer.

Understand what you are buying

If most accounts are client-owned, the buyer is mainly buying people, skill and relationships, not assets. A buyer should weigh those relationships, and the handover then matters more. Ask which clients know about the sale, which would need to approve a change and how the seller will help keep them.

Ask the seller

  • Which accounts does the agency own, and which does each client own?
  • Does any account sit on a staff member’s personal profile?
  • What do the agreements say about ending service and returning access?

Sources

This answer is checked against primary sources. Links were last confirmed on the dates shown.

  1. 01
    Business Development Bank of CanadaGovernment
    How to conduct due diligence when buying a business
    bdc.ca·Checked Oct 21, 2026
  2. 02
    Business Development Bank of CanadaGovernment
    What are the steps to buying a business?
    bdc.ca·Checked Oct 21, 2026
  3. 03
    Business Development Bank of CanadaGovernment
    After buying a business, what is the next step?
    bdc.ca·Checked Oct 21, 2026
  4. 04
    Canadian Federation of Independent BusinessResearch data
    Succession Tsunami: Preparing for a decade of small business transitions
    cfib-fcei.ca·Checked Aug 14, 2026

Deavo is an advertising and listings platform, not a brokerage, law firm or valuation firm. This page is general information, not legal, tax, accounting or valuation advice, and rules differ by province. Confirm anything you rely on with a qualified professional before you act on it.