Should my agency mark up ad spend?

Markup on ad spend means an agency charges you more for your media budget than what Google or Meta actually charges for those clicks or impressions, pocketing the difference on top of whatever management fee they already quote you. As an example, if your budget is 2,000 dollars and the agency marks it up by 15 percent, Google only ever sees roughly 1,739 dollars worth of actual bidding power, while the agency keeps the rest.

This practice has roots in traditional media buying, where agencies historically earned a commission on the ad space they purchased on a client's behalf, often 15 percent, before digital advertising made spend far more transparent and trackable in real time. Some agencies still apply a version of that old model to Google Ads and Meta Ads without stating it plainly.

A markup is different from a management fee. A management fee is charged separately for the agency's time and expertise; a markup is a hidden reduction in how much of your stated budget actually reaches the platform buying your ads.

If your budget is marked up, less of your money is actually competing for clicks than the number you agreed to spend, which can mean fewer clicks, fewer conversions, and a worse cost per lead than a transparent account running the same stated budget. You are paying for a result that a smaller effective budget is less able to produce.

Markup also makes it much harder to judge whether an agency's fee is reasonable, since you cannot separate the true cost of your advertising from the cost of managing it. A 10 percent management fee on top of a transparent budget is easy to evaluate; a hidden markup baked into the spend itself is not, since you have no way to see it without checking the Google Ads account directly.

Ask to see the actual amount Google or Meta charged versus the amount you were billed. If the numbers do not match and there is no clearly disclosed management fee explaining the difference, that gap is the markup.

If you have any access to your Google Ads account, check the billing section directly, which shows exactly what Google charged for the period. Compare that number to what your agency invoiced you for spend, separate from any clearly stated management fee. A difference between the two is a markup, whether or not the agency calls it that.

Ask the agency directly and plainly: is 100 percent of my stated ad budget spent with Google or Meta, with your fee charged separately? A transparent agency should be able to answer yes without hesitation, and should already have this stated somewhere in your contract or proposal.

If you do not have Google Ads account access at all, that is itself worth addressing first, since it is the most direct way to verify how your money is actually being spent, markup or not.

A fair structure states the management fee clearly, as either a flat monthly rate or a percentage of your ad budget, and states plainly that 100 percent of your remaining budget goes directly to the ad platform with no markup. This lets you calculate the true total cost yourself at any budget level, rather than relying on the agency's math.

A common transparent structure charges a percentage of ad spend as the management fee, often around 10 percent, with a minimum monthly fee to cover the agency's time on smaller budgets, and no additional markup anywhere in the spend itself.

If your current agency cannot or will not confirm plainly that your spend is unmarked up, that is worth treating as a serious question before your next renewal, since it affects every dollar you spend with them, not just the management fee on top.