Whose Card Is on the Account?

One question decides whether you can ever verify your ad spend, and most owners have never thought to ask it.

Whose payment method is attached to your Google Ads and Meta accounts? Yours, or the agency’s?

The answer determines who Google’s customer is. And Google sends its invoice to its customer, not to whoever happens to be funding the campaign.

If the agency’s card sits on the account, Google bills the agency. The agency then bills you, using a document the agency wrote. Every figure you see about your own advertising has passed through a party with a commercial interest in the number.

That isn’t a scandal. It’s the standard arrangement and there are legitimate reasons for it. But it’s worth knowing that it exists, because almost nobody explains it at the point of signing, and it quietly settles the question of what you’re able to check.

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Two Models, Two Very Different Relationships

Agency-billed. The agency’s payment method funds the platforms. Google and Meta invoice the agency. You receive one invoice covering fee and media together, or two the agency has prepared. Any markup applied to media is invisible by construction, because you never see what the platform actually charged.

Client-billed. Your card or direct debit sits on your own ad accounts. Google charges you. Meta charges you. The invoices arrive in your inbox from the platform itself, and the agency bills separately for its time.

The second arrangement doesn’t require anyone to be more honest. It makes media markup structurally impossible, which is a different and better sort of protection. You are also, incidentally, collecting the card points on your own advertising rather than someone else’s.

Agencies resist this less often than owners expect. Client billing removes their cash flow risk, which most finance directors quite like. Where an agency resists strongly, ask why, and listen carefully to the answer.

Two honest qualifications before you rush at it. Your card now carries the float, so at twenty thousand a month you’re funding the spend rather than the agency, and that’s a real cash-flow question for your finance function rather than an afterthought. You’ll also want spend caps and alerts set properly, because a payment method on a live ad account is exposure you didn’t previously have.

Switching is also quicker in some places than others. Adding a payment method in Meta takes minutes. A Google Ads account running on an agency credit line or monthly invoicing needs a billing transfer, which is a longer conversation and occasionally a new account.

Worth the trouble even so. It’s the only measure on this page that fixes the problem permanently rather than requiring you to ask again next quarter.

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The Invoice You’ve Probably Never Seen

Whichever model you’re on, a platform invoice exists. Somebody receives it every month.

It is not the same thing as a screenshot of the dashboard, and the difference matters more than it sounds. A dashboard view shows a date range someone selected. An invoice shows a billing period, a total, adjustments, credits and refunds. Those last three are where the interesting differences live.

I audited an account once where the agency had been sending platform screenshots each month. The images were real. They simply didn’t match what the account had actually recorded, and nobody had ever put the two side by side because the client had no way to see the second one.

So ask for the original documents rather than a summary of them. The phrasing matters: the invoices Google and Meta issued, not a report showing what was spent. One is evidence. The other is a description of evidence.

The same principle applies to anything bought on your behalf. Production, video, licensed images, software subscriptions. If a third party invoiced someone for work on your account, that invoice exists and you’re entitled to see it. What you cannot check, you are taking on trust, and the sums involved are rarely trivial.

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What Happens Between Your Money and the Advert

There’s a serious piece of evidence on this, and it comes from the buyers rather than the sellers, which is why I trust it.

ISBA, the UK trade body for advertisers, commissioned PwC to trace advertising money through the programmatic supply chain. Their first study followed the pounds from advertiser to publisher and found roughly half arriving at the other end. A meaningful share couldn’t be attributed to any identifiable party at all.

Two honest caveats, because you should hear them from me rather than from someone dismissing the point later.

First, that study examined programmatic display, which is a longer chain than most SMBs ever buy into. If your spend goes to Google Ads search and Meta, your money is travelling a much shorter distance and losing far less on the way.

Second, their follow-up work found the picture had improved markedly, with far less of the spend untraceable than in the first round. Which is the part that should interest you, because it means the problem responds to attention.

The principle survives both caveats. Every intermediary between your bank account and the advert takes something, and the ones you can’t see take it without discussion.

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Five Answers You’ll Get, and What They Mean

Ask for platform invoices and you’ll hear one of these. None are lies exactly. All are worth translating.

• “Our methodology is proprietary.” An invoice is a receipt. There is no methodology in a receipt.
• “The data would be overwhelming.” They’re describing a single-page PDF with a number on it.
• “Clients sometimes break things.” A fair worry about editing rights, and no answer at all to a request for a document.
• “It’s industry standard.” Often true. Standard practice and defensible practice are separate questions, and the first has never settled the second.
• “Our reports cover everything.” The closest to an admission. A report is authored. An invoice is issued. That distinction is the whole of what you’re asking for.

Note which excuse you get, because it tells you which conversation you’re actually in. Confusion about the request is one thing. Reluctance to hand over a receipt is another.

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The Email to Send This Week

Keep it administrative. This reads far better as housekeeping than as an accusation, and it gets answered faster.

“Tidying up our supplier records this quarter. Three things when you have a moment. Could you confirm which payment method is currently on our Google Ads and Meta accounts? Could you forward the platform invoices for the last three months as issued, rather than a summary? And for any production or software costs billed to us, could you include the original supplier invoices? Happy to have a call if easier.”

Three requests, no allegations, and a deadline implied by the quarter rather than stated.

What comes back is the finding. Documents within a few days means the relationship is sound and you can stop worrying. A summary instead of invoices means asking once more, more precisely. Nothing at all, twice, is an answer of its own, and worth reading alongside what platform access you should hold and how agency pricing is normally built.

Once the invoices arrive, reconciling them against what you paid takes about ten minutes.

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Send Me What Came Back

Free, written, and yours to keep either way.

What you receive:

• Which billing model you’re on, and what it means for what you can verify
• Platform invoices reconciled against your agency invoices, with any gap named in pounds
• Whether markup is being applied to media, production or software, and at what rate
• The steps to move to client billing, if that’s the right call for you

Plenty of agencies pass media through at cost and always have. When that’s what I find, I’ll tell you, and you’ll have the paperwork to prove it next time you wonder.

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