A senior buyer on our paid-media bench has crossed the $100K monthly managed spend threshold on a single partner-agency account for the first time. The account belongs to a DTC brand on a long-running partnership; we have run it for 14 months. Trailing-quarter blended ROAS sits at 4.6x with a 38 percent improvement in cost-per-acquisition versus the inherited baseline.
The reason we are writing this down rather than just nodding internally is that the threshold is operationally meaningful. Above $100K monthly spend, accounts move to our enterprise-tier reporting cadence. That means a weekly written narrative rather than a monthly one, a monthly creative production review built into the contract rather than billed as an add-on, and a quarterly attribution audit run by a second senior who is not the day-to-day buyer. The point of the second senior is to catch the kind of optimization drift that the buyer running the account is too close to see.
We also use this threshold to cap the buyer's account load. The buyer on this account is now running 22 accounts total, weighted for complexity, and we have closed their book to new work for the rest of 2026. We have written this rule down in the Operating Charter precisely so we can defend it when revenue pressure wants to push past it.
Three things made the $100K month happen earlier than we forecasted. The client's catalog opened up to additional product lines in Q1 which we had been waiting for. Performance Max consolidation we ran in November produced cleaner conversion signal which let us scale aggressively without CAC drift. And the creative production cadence (the partner agency's in-house creative team, briefed weekly by our buyer) hit a rhythm that produced fresh angles instead of variants. We are not taking credit for that creative pipeline. We are crediting the agency.
If you are an agency partner thinking about whether your account is the next one to hit the threshold, the short version is: it is almost always creative supply that decides. The buying side is solved. The asset side is the binding constraint. Brief us in your weekly stand-up and we will tell you honestly whether the bottleneck is on our side or yours.