How to Audit Paid Media Waste Before You Increase Budget

Increasing budget multiplies the account you already have: its winners and its leaks. To make the maths visible, take a deliberately hypothetical example. If 20% of a £10,000 monthly budget is doing no useful work, that is £2,000 a month. Approve a 50% increase without an audit and the leak grows with everything else, towards £3,000 a month, or £36,000 a year. The percentages are invented; the mechanism is not. Whatever your real leak rate is, scaling multiplies it.

So before new money goes in, audit the money already going out. Here is the audit we run, in the order we run it.

Each first-pass check takes about fifteen minutes with account access. None needs a data team.

1. Search terms and placements. The classic leaks. Pull the search terms report and the placement report for the last 60 days, sort by spend, and read the top 50 lines of each. Review trigger: spend on terms or placements you would not knowingly pay for, with no negative keyword or exclusion added in the last month. If the list is ugly, our signs Google Ads is wasting money walkthrough covers the fixes.

2. Brand absorption in automated campaigns. Check whether Performance Max, broad match, or AI Max is serving on your own brand terms and blending those conversions into its reported results. Review trigger: your best-performing automated campaign has your brand name in its search terms. The Performance Max audit guide shows where to look.

3. Retargeting overlap and frequency. List every retargeting audience across platforms and check for the same users being chased by several campaigns at once. Review trigger: retargeting spend that grows when site traffic grows, and frequency caps that are absent or generous.

4. Tracking integrity. Double counting, missing deduplication, consent gaps, and conversions firing on refreshes all inflate reported performance and misdirect Smart Bidding. Run the 27-point tracking audit checklist. Review trigger: platform-reported conversions materially exceed what your CRM or order system recorded for the same period.

5. Pacing and settings drift. Check auto-applied recommendations, expanded match types, display network opt-ins, and dayparting that no longer matches when your buyers buy. Review trigger: settings changed in the change history that nobody on your team changed.

For a fuller tour of where budgets leak, see where Google Ads budgets go to die, and put your own numbers into the waste calculator.

Run the audit in this order: tracking first, structure second, leaks third.

Fix tracking before judging anything else, because bad conversion data poisons every other check. A campaign can look efficient purely because it double-counts. Then separate brand from non-brand and retargeting from prospecting, so you can see where reported performance actually concentrates. Then rank the leaks you found by monthly cost and fix from the top.

The audit tells you where money is being wasted. It does not yet tell you which remaining spend is genuinely causing revenue. That is the incrementality layer above this audit, and the method is in our guide to whether your paid media spend is truly incremental, with the platform ROAS vs incremental ROAS distinction as the short primer. For accounts about to scale, we run both layers together as a paid media efficiency engagement: audit first, reallocate, then scale what survives.

A budget increase is a decision an account should qualify for. Before new money goes in, check this gate:

• Platform-claimed revenue has been reconciled against real revenue within the last quarter.
• Brand and non-brand performance are reported separately.
• The top 50 search terms and placements by spend have been reviewed within the last month.
• No unreviewed auto-applied recommendations in the change history.
• Tracking passes deduplication and consent checks.
• At least one incrementality signal exists for the segment being scaled: a reconciliation ratio, a pause test, or a holdout.

Copy that list into your next budget meeting. If the account passes, scale with confidence. If it fails on two or more, the increase is premature. The same money spent on fixing the gate items can buy more growth than the extra media would.

None of this is an argument against spending more. Accounts that pass the gate and still cap out can genuinely need more money: proven segments hit impression-share limits, marginal conversions stay profitable, and budget is the constraint. Starving those accounts is its own kind of waste. The point of the audit is not to block growth. It is to make sure the increase buys new customers rather than a bigger version of the existing leaks.