by Joshua Uebergang, founder of Digital Darts and author of “Google Shopping for Shopify: The Definitive Guide“
I have audited over 1,300 Shopify stores’ ad accounts since 2015, and young companies leak money in the same five places almost every time. None of them takes more than ten minutes to find.
Together they routinely explain 20 to 50 percent of wasted spend, which for an early-stage company is the difference between a channel that funds growth and one that quietly eats the runway.
Leak one. Paying for customers you already own.
When someone searches your brand name, they were already coming to you. Google will happily sell you that click anyway, and because it converts so well, it makes the whole account look healthier than it is.
Pull your search terms for the last 30 days, filter for your brand name and its misspellings, then total the spend. Anything beyond a small defensive slice is money spent on traffic you had already earned.
Then split brand from non-brand in your reporting, permanently. Blended numbers hide expensive acquisition behind cheap brand clicks, and you cannot fix what an average is covering up.
Leak two. Broad match running without negative keywords.
Google’s match types have drifted broader every year, and its automated bidding is very good at spending your budget on loosely related searches. A founder selling premium dog harnesses ends up paying for “free dog stuff” and “harness racing results.”
Open the search terms report and read the first 100 terms sorted by cost. It is the first place I look in an audit, and the one I keep coming back to in my own running list of Google Ads optimisations. If a quarter of them make you wince, add them as negative keywords and put the same review in your calendar every month. It is the cheapest optimisation in the entire platform.
Leak three. Showing ads to people who will never buy.
The default location setting targets people in your market and people who have merely shown “interest” in it. Ship only within the United States and you can still be paying for clicks from someone overseas who once read about the place.
Open each campaign, go to settings, then locations, then expand the location options. If it says presence or interest, switch it to presence only. I have seen young accounts where a tenth of the budget was landing on people the store could never ship to.
Leak four. Letting Performance Max grade its own homework.
Performance Max is Google’s automated everything campaign. Left alone, it gravitates to the easiest conversions available, which usually means your brand searches and your existing customers, repackaged and handed back to you as new revenue.
Two settings decide this. Whether brand exclusions are applied, and whether the customer acquisition setting is switched on so the campaign optimises for new customers rather than repeat buyers.
Expect the reported return to fall once you do it. That fall is not lost performance. It is the honest number showing up for the first time.
Leak five. Conversion counting that flatters the platform.
Duplicate conversion actions, add-to-carts counted alongside purchases, and imported goals firing twice all inflate the results the bidding system optimises toward. Your dashboard then reports a return your bank account never sees.
So reconcile it. Compare the conversions recorded in Google Ads against actual orders in your store backend over the same 30 days. A gap of 10 to 15 percent is normal, because attribution windows differ. A gap of 40 percent means the machine is being trained on fiction, and every bid it makes is wrong. If you sell leads rather than products, the same reconciliation applies to how you measure lead generation.
The number that ties it together.
Plug the leaks, then judge the channel on one figure. Take total revenue divided by total ad spend and compare it against the break-even your contribution margin dictates. If your margin after product costs, shipping and fees is 30 percent, you need $3.33 of revenue per ad dollar just to stand still. Advertising is one of the costs founders routinely underestimate, and it is the easiest of them to measure honestly.
Most founders I meet have never worked that line out. The five leaks waste money, but not knowing your break-even wastes the whole exercise, because you cannot tell a winning account from a losing one. Ten minutes per leak, one line of arithmetic, and you will understand your ad account better than most of the people paid to manage them.
Joshua Uebergang is the founder of Digital Darts, a Google Ads agency for Shopify stores. He has 20 years in ecommerce marketing, has audited over 1,300 Shopify stores, and wrote “Google Shopping for Shopify: The Definitive Guide“.
