Every account I audit that is quietly bleeding money has the same thing in common: it was built for a version of Google Ads that no longer exists. Dozens of tiny ad groups, one keyword each, a campaign for every colour and size. It looks organised. It is starving the bidding.

Here is the short answer. In 2026 you structure a Google Ads account around intent and around conversion data, not around keywords. Group closely related terms into themed ad groups, keep enough volume in each campaign for Smart Bidding to learn, and split campaigns only when you have a real reason: a different goal, a different budget, or a different audience. This post covers the structure I actually use, why over-segmentation hurts you now, and the three structural mistakes I see waste budget week after week.

Start from the goal, not the keyword

The old instinct was to start with a keyword list and build the account upward from it. That is backwards now.

Start with the business goals instead. Lead gen for one service line, e-commerce sales for a product range, bookings for a location. Each distinct goal, budget or target return deserves its own campaign, because the campaign is the unit Smart Bidding optimises against. Everything below the campaign exists to feed it clean, well-themed signals.

So the hierarchy I build to is simple:

  • Account holds everything and your shared budgets, negatives and conversion setup.
  • Campaign owns a goal, a budget and a bid strategy. This is where you exert control.
  • Ad group owns a single tight theme of keywords and the ads that match them.
  • Keywords and ads live at the bottom and should map cleanly to one intent.

Get the campaign layer right and the rest follows. Get it wrong, splitting by trivia like device or a single product variant, and you fragment your data across too many campaigns for the algorithm to learn from any of them.

Why SKAGs are dead and STAGs won

For years the received wisdom was single keyword ad groups. One keyword, one ad group, total control over the message. It made sense when Quality Score rewarded surgical relevance and you set bids by hand.

Smart Bidding killed it. Automated bidding needs a density of conversion signals to learn, and when you shatter your account into hundreds of one-keyword ad groups you spread that data so thin the algorithm never gets a clear read. You end up with dozens of ad groups sitting in permanent “learning”, none of them with enough conversions to bid confidently.

The structure that works now is the single theme ad group. Group five to fifteen closely related keywords that share the same intent into one ad group, and write ads that speak to that theme. You keep relevance high enough for strong ad strength and Quality Score, and you pool enough volume for the bidding to do its job.

SKAG: [running shoes], [buy running shoes], [running shoes online] each in their own ad group.

STAG: one “running shoes” ad group holding all three, with ads written to that intent.

Reserve tight, near-SKAG segmentation for a handful of your highest-value, highest-volume terms where the control genuinely earns its keep. For everything else, theme it and move on.

Feed Smart Bidding enough data to work

This is the number that should drive most of your structural decisions. Smart Bidding strategies want a meaningful volume of conversions per campaign to optimise reliably, and a common working benchmark is at least 30 or so conversions in the trailing 30 days before a campaign has a stable base to learn from.

Hold that thought against your structure. Every time you split a campaign, you split its conversions too. Two campaigns doing 20 conversions each will usually be optimised worse than one doing 40. So before you create a new campaign, ask whether it will carry enough conversion volume to stand on its own. If it won’t, it probably belongs as an ad group inside an existing campaign.

That is the whole case for consolidation in one line: fewer, better-fed campaigns beat many starving ones. If you want the deeper argument for when a deliberate second campaign does pay off, I made it in the feeder strategy we use with two search campaigns instead of one.

The three structural mistakes that waste budget

I see the same three faults again and again. Fix these before you touch bids.

  1. Over-segmentation. Too many campaigns and ad groups, each too small to matter. It feels like control and reads like organisation, but it starves the bidding and multiplies your admin. When in doubt, consolidate.
  2. Brand and generic in the same campaign. Brand traffic converts cheaply and at a high rate, so mixing it into a generic campaign flatters your averages and lets the bidding lean on easy brand wins while non-brand quietly underperforms. Split brand into its own campaign so you can see and control it.
  3. No shared negative keyword lists. Without account-level or shared negatives, the same junk search terms cost you money across every campaign, and you fix them one campaign at a time. Build shared lists and apply them once.

None of these are exotic. They are just the defaults that quietly compound, and clearing them is usually the fastest win in an audit.

Match match types and negatives to the structure

Structure and match type are two halves of the same decision. Broad match plus Smart Bidding can work well now, but only inside a structure that can contain it: clean conversion tracking, a themed ad group so the ads stay relevant, and a disciplined negative keyword routine so the broad reach does not wander into waste.

Run your search terms report on a regular cadence and route what you find back into the structure. Genuine new intent becomes a new keyword or a new themed ad group. Junk becomes a negative, ideally on a shared list so it protects the whole account at once. The structure is not something you set once. It is something you maintain.

How often to review your structure

You do not rebuild the account every month. But you should give the structure a proper look each quarter, and any time performance shifts hard or you launch a new product or service.

At each review, ask three questions. Is any campaign starved of conversions and better merged? Is any single campaign trying to serve two goals and better split? And are your negatives and shared lists still doing their job? Answer those honestly and the structure stays lean.

Get a second pair of eyes on your account

Most accounts do not need a rebuild. They need the clutter cleared: the over-segmentation consolidated, brand pulled out, shared negatives put to work, and campaigns fed enough data to let Smart Bidding earn its keep. If you want to know exactly where yours is leaking, our free Google Ads audit maps your structure against what actually drives performance in 2026, and our Google Ads management team can rebuild it with you if it needs the work.

FAQ

How many campaigns should a Google Ads account have?

As few as you need to separate genuinely different goals, budgets or audiences. There is no magic number. The real constraint is conversion volume: each campaign should carry enough conversions for Smart Bidding to learn, so avoid splitting into campaigns too small to stand on their own.

Are single keyword ad groups (SKAGs) still worth using?

Rarely. Smart Bidding needs pooled conversion data, and SKAGs fragment it across too many tiny ad groups. Use themed ad groups of five to fifteen related keywords instead, and reserve tight segmentation for a few of your highest-value terms.

How many keywords should I put in an ad group?

For a single theme ad group, roughly five to fifteen closely related keywords that share the same intent. That keeps your ads relevant to the search while pooling enough volume for the bidding to work. Google’s technical limit is far higher, but relevance and data density, not the limit, should guide you.

Should brand and non-brand be in separate campaigns?

Yes. Brand converts cheaply and at a high rate, so mixing it with generic traffic inflates your averages and hides how non-brand really performs. Split them so you can budget, bid and measure each on its own terms.

How often should I restructure my Google Ads account?

Review the structure quarterly, and after any major performance shift or new product launch. Full rebuilds should be rare. Most accounts need maintenance, consolidating starved campaigns and tightening negatives, not a teardown.