Nobody sets a budget line called waste. It arrives quietly, in small amounts, from six or seven places at once, and by the end of the year it is the single largest item in your marketing spend.
Marketers themselves estimate that up to 30% of ad spend is wasted. That is the people running the campaigns saying it about their own accounts. The real figure in an unaudited account is usually worse.
On a two thousand dollar a month budget that is seven thousand two hundred dollars a year, gone, for nothing. On ten thousand a month it is thirty six thousand.
Here is the audit. It takes about two hours and it usually pays for the year.
One. Branded search you already owned
Start here because it is the biggest and the least discussed.
Open your search campaigns and split performance into branded and non branded. Branded means anyone searching your business name or a close variant.
Those conversions look magnificent. Low cost, high rate, excellent return. They are also, mostly, people who were coming to you anyway and would have clicked the organic result sitting directly underneath.
Automated campaigns love this traffic because it makes them look good. Left alone, they will drift more and more budget toward it.
You may still choose to buy some branded traffic, for competitor defence or for control of the message. Make it a decision rather than a default, and never let branded results inflate the numbers you use to judge everything else.
Two. Tracking that was broken before you noticed
Half of all "our ads stopped working" conversations end at a broken pixel.
Check three things. Are conversions being counted more than once, for example a form submission that also fires on the thank you page. Are you counting non events like phone number clicks or PDF downloads as if they were sales. And is your conversions API running alongside your pixel with an event match quality above 7.
Bad signal does not just mislead you. It actively misdirects the algorithm, which spends real money finding more of the wrong thing.
Every automated ad system is a mirror. Feed it a distorted picture of success and it will go out and buy you more distortion, faster and cheaper every month.
Three. Audience and campaign overlap
Older accounts accumulate campaigns like a shed accumulates paint tins. Six ad sets, four of them targeting broadly overlapping people, all bidding in the same auction.
You are, in a real sense, competing against yourself and paying the increment.
Consolidate. Modern platforms want fewer, better fed campaigns. Most accounts should be running the majority of spend through a small number of consolidated campaigns rather than a museum of legacy structures each holding a fraction of the data.
Four. The search terms nobody has read
Open the search terms report. Sort by spend. Read the top fifty.
In almost every account there will be terms that make you wince. People looking for jobs. People looking for DIY instructions. People looking for a competitor's warranty department. People looking for a service you stopped offering in 2022.
Broad matching and automated targeting pull all of it in. Some of it is genuinely valuable and you would never have thought to target it. The rest is money set on fire in small denominations.
Build the negative list. Then diarise this for every fortnight, because it refills.
Five. Traffic sent to a page that leaks
This is the waste that does not appear in the ad account at all, which is why it survives so long.
You can have perfect targeting, excellent creative and a sensible bid, then send the click to a homepage with nine navigation links, a slideshow and a form below the fold that asks for eleven fields.
Check three numbers per landing page. How long the page takes to become usable on a phone on a normal connection. What percentage of visitors start the form. What percentage finish it.
A form that loses 60% of the people who start it is not a form problem you can outspend.
Six. Creative that finished working weeks ago
Fatigue windows have compressed to roughly two to three weeks. If your best performing ad launched in June and it is now September, you are not running a winner. You are paying a premium to show a tired ad to people who have already decided.
Check the launch date on every ad currently taking real budget. Anything older than a month with rising frequency and falling click through is quietly taxing you.
Seven. Retargeting people who already bought
Small, embarrassing, and present in most accounts. Exclude converters from prospecting and from most retargeting. Otherwise you are paying to advertise a product to the people who already own it, which is both wasteful and mildly insulting to a new customer.
The two hour version
If you only have one sitting, do it in this order.
- Split branded from non branded search and judge them separately.
- Verify conversion tracking, remove duplicates and non events.
- Read the top fifty search terms by spend and build negatives.
- Check launch dates on every ad taking meaningful budget.
- Load your main landing page on a phone and try to submit the form yourself.
- Confirm converters are excluded from prospecting.
Most businesses find between fifteen and thirty percent of their spend sitting in those six checks. Not through incompetence. Through accumulation, which is what happens to every account nobody audits.
Then do the harder thing
Once the waste is out, resist the urge to bank it. Move it into the two things that compound rather than evaporate. More genuinely distinct creative, and a better offer.
Recovered waste spent on the same weak proposition just buys you more of the same result, slightly cheaper. Recovered waste spent on something worth advertising changes the shape of the year.