In short: For most agencies, the client should pay for ad spend and the agency should be paid for managing it. In practice that means either the client's own payment method on the ad account, or a prepaid budget the client tops up before spend goes out. If the agency pays the platforms and invoices later, it's effectively lending the client money, so keep terms short and spend capped.
It's one of the first questions every agency runs into. The client wants to spend $20K on Meta next month, so whose money actually goes to Meta?
There's no single right answer, but there is a pattern. The more the agency sits between the client's money and the ad platform, the more control it gets, and the more risk it carries.
Quick note: this is practical experience, not legal, tax or financial advice. Talk to your accountant about how ad spend should show up in your books.
The short answer: the client pays, you manage
Ad spend is the client's cost of doing business. Your fee is for running it. When both sit on the same card and the same invoice, that's easy to forget, until a client pays late and the platform still bills you.
- The client pays for spend: the media budget, whatever the platform charges.
- The agency gets paid for management: a flat fee, a percentage of spend, or both.
- Who pays the platform is the part that changes, depending on the setup below.
Option 1: The client's card is on the ad account
The client adds their own payment method to the ad account. You manage the campaigns, and Meta or Google bills the client directly.
Good for: smaller clients, short projects, clients who want full visibility on spend. Watch out for: failed cards pausing campaigns mid launch, and very little control when billing breaks.
Option 2: The client prepays a budget
The client tops up a balance before spend goes out. No balance, no spend. You stay in control of the accounts, and nobody's card is on the hook.
Good for: new clients, bigger monthly budgets, anyone with a shaky payment history. Watch out for: campaigns stopping when nobody tops up. Set low balance alerts and agree a top up rhythm upfront.
Want prepaid budgets without building the setup yourself? Send us your monthly spend, platforms and client verticals and we will tell you what is realistic. Talk to us →
Option 3: The agency pays and invoices the client
The agency's card or credit line pays the platform, and the agency bills the client afterwards. You get the most control, but you're now financing your client's growth.
Good for: long term clients with a clean payment record. Watch out for: cash flow. A client spending $3K a day is $90K a month, and on 30 day terms you can easily be carrying two months of their spend. If you go this way, put it in writing: what to put in a client ad spend agreement.
What about a markup on ad spend?
Some agencies charge a percentage on top of spend, some charge a flat management fee, plenty do both. Whatever you pick, show spend and fees as separate lines. Clients trust it more, and disputes get a lot easier to sort out.
A quick way to decide
- New client, unknown payment history: client card or prepaid budget.
- Ongoing client with growing budgets: prepaid budget.
- Long term client, clean record, you want full control: agency billing with short terms and spend caps.
- Never: client spend on a founder's personal card. More on that in how to front client ad spend without personal liability.
Where Quority fits
With Quority, client budgets are prepaid and managed in one platform: you allocate funds to each ad account, track balances and move money between accounts when you need to. The credit line sits at Quority's level with the ad platforms, so you get stable agency accounts without putting your own card or cash flow behind a client's spend. We work with compliant, white hat advertisers only.
Related reading
- Prepaid vs postpaid ad spend for agencies
- How to pay for client ads without a personal credit card
- How agencies handle client bad debt on ad spend
- What to put in a client ad spend agreement
- How to front client ad spend without personal liability
Frequently asked questions
Should the agency or the client pay for ad spend?
In most cases the client pays for ad spend and the agency is paid a fee for managing it. The real question is who pays the platform: the client's own card, a prepaid budget, or the agency with invoicing afterwards.
Is it a good idea for an agency to pay for client ad spend?
Only with long term clients you trust, short payment terms and spend caps. Otherwise you're financing the client's campaigns and carrying the risk if they pay late.
Do agencies charge a markup on ad spend?
Some do, some charge a flat management fee, and many combine both. Showing spend and fees as separate lines keeps it clear for the client.
What is the safest way to handle client ad spend?
A prepaid budget or the client's own payment method, with spend kept off personal cards.
Does Quority pay for client ad spend?
No. Client budgets with Quority are always prepaid. Quority's credit line sits at the agency level and keeps the accounts running at scale, but there's no financing or postpaid terms.
Not sure which setup fits your clients? Tell us your monthly spend, platforms and client verticals, and we'll tell you what makes sense. Talk to us →
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