How to Structure Google Ads Campaigns for Maximum ROI
Your Google Ads campaign structure is the blueprint that determines how efficiently your budget is spent, how relevant your ads are, and how effectively Smart Bidding can optimise your account. A well-structured account makes everything else — ad copy, bidding, targeting — work better. A poorly structured one undermines even the best strategies. This guide covers how to structure Google Ads campaigns for maximum ROI in 2026.
Understanding the Account Hierarchy
Google Ads uses a three-level hierarchy that determines how budget, targeting, and bidding flow through your account:
- Account: Your top-level container, linked to billing and user access
- Campaigns: Control budget, bidding strategy, network targeting, and geographic settings
- Ad groups: Contain keywords, ads, and audiences — determining when and what ads show
The relationship between these levels matters. Budgets are set at the campaign level, so campaigns should represent distinct strategic objectives or budget allocations. Ad groups should contain tightly themed keywords that share a common intent, allowing you to write highly relevant ad copy.
Campaign Segmentation Strategies
How you split your campaigns depends on your business model, budget, and goals. Here are the most common segmentation approaches:
By Intent
- Brand campaigns: Capture searches for your brand name with dedicated budget
- Non-brand high-intent: Target keywords indicating purchase readiness
- Non-brand research: Capture top-of-funnel searches with informational intent
- Competitor campaigns: Bid on competitor brand names (where appropriate)
By Product or Service
- Separate campaigns for each major product line or service category
- Allows independent budget allocation based on product margin and volume
- Enables product-specific bidding strategies and conversion goals
By Geography
- Separate campaigns for different regions if performance varies significantly
- Particularly important for businesses with different offers or pricing by location
- Allows location-specific ad copy and landing pages
Ad Group Strategies: SKAG vs Themed
One of the longest-running debates in PPC is whether to use Single Keyword Ad Groups (SKAGs) or themed ad groups. In 2026, the answer is clear for most accounts.
Single Keyword Ad Groups (SKAGs)
SKAGs contain one keyword per ad group, allowing perfectly matched ad copy. They were popular when exact match was truly exact. In 2026, they are largely outdated because:
- Google's close variant matching means exact match keywords already trigger for related queries
- SKAGs create thousands of ad groups, making management extremely time-consuming
- They fragment conversion data, starving Smart Bidding of the volume it needs to optimise
Themed Ad Groups (Recommended)
Group 5-15 closely related keywords by theme and intent. This approach:
- Concentrates conversion data for more effective Smart Bidding
- Reduces management overhead significantly
- Allows sufficiently relevant ad copy without fragmenting data
- Works naturally with responsive search ads, which test multiple headline combinations
The key is ensuring all keywords in a themed ad group share the same intent so your ad copy remains relevant. "PPC agency London" and "PPC management London" can share an ad group. "PPC agency London" and "what is PPC" should not.
Naming Conventions
A clear naming convention saves hours of management time and makes reporting far easier. Use a consistent structure like:
Campaign: [Network] | [Intent/Type] | [Product/Service] | [Location]
Ad Group: [Theme] | [Match Type]
Examples
- Campaign: Search | Non-Brand | PPC Management | UK
- Campaign: Search | Brand | Spires Digital | National
- Campaign: Shopping | Standard | Electronics | UK
- Ad Group: PPC Agency Services | Mixed Match
- Ad Group: Google Ads Management | Mixed Match
Consistent naming makes it easy to filter, report, and identify campaigns at a glance. It also makes handovers between team members seamless.
Match Type Strategy for 2026
Match types have evolved significantly, and your strategy should reflect the current reality:
Broad Match
Now powered by machine learning, broad match can work well when paired with Smart Bidding and strong negative keyword lists. Google uses signals like user intent, landing page content, and other keywords in the ad group to determine relevance. Use broad match in campaigns with sufficient conversion data (at least 30 conversions per month).
Phrase Match
Captures searches that include the meaning of your keyword. This is the workhorse match type for most campaigns — more controlled than broad, more flexible than exact. Ideal for campaigns building toward Smart Bidding thresholds.
Exact Match
Despite its name, exact match now includes close variants, plurals, and implied words. Use it for your highest-value keywords where you want maximum control and are willing to accept lower volume.
Pair your match type strategy with a robust negative keyword strategy to control the queries that broad and phrase match attract.
Performance Max Integration
If you run Performance Max campaigns alongside search campaigns, structure matters even more. Ensure your search campaigns have clear keyword themes and adequate negative keywords to prevent Performance Max from cannibalising your high-intent search traffic.
Budget Allocation Framework
How you allocate budget across campaigns should reflect their strategic value:
- Brand campaigns (10-15% of budget): High conversion rate, low CPC — protect your branded searches
- High-intent non-brand (50-60%): Your primary growth driver
- Mid-funnel research (15-20%): Building pipeline for future conversions
- Competitor campaigns (5-10%): Expensive but can capture switch intent
- Testing (5-10%): New keywords, audiences, or campaign types
Review allocation monthly based on performance data. If a campaign consistently hits its targets, consider scaling its budget by reducing allocation from underperformers.
Frequently Asked Questions
How many campaigns should I have in a Google Ads account?
There is no universal answer, but most small to medium businesses perform best with 5-15 campaigns. Each campaign should represent a distinct budget allocation, geographic target, or product category. More campaigns mean thinner data per campaign, which can impair Smart Bidding. Only split campaigns when you have a clear strategic reason to do so.
Should I separate campaigns by match type?
In 2026, separating campaigns by match type is generally unnecessary. Google's Smart Bidding adjusts bids at the query level regardless of match type, so mixing phrase and exact match in the same campaign is fine. If you use broad match, keep it in campaigns with strong conversion data and robust negative keyword lists.
How do I prevent campaigns from competing with each other?
Use negative keywords to prevent overlap between campaigns. For example, add your brand name as a negative keyword in non-brand campaigns. Cross-reference keyword lists between campaigns to identify potential conflicts. Google's auction system handles same-account competition through Ad Rank, but clean segmentation gives you better data and control.
Is it better to have one large campaign or several smaller ones?
Fewer, larger campaigns generally perform better with Smart Bidding because they accumulate conversion data faster. However, if different product lines require different budgets, bidding strategies, or geographic targeting, splitting is warranted. The decision should be driven by strategic need, not organisational preference. Review our Quality Score guide for more on how structure affects performance.
Campaign structure is not exciting, but it is foundational. Get it right and everything else in your Google Ads account becomes easier and more effective. If you need help restructuring your account for better performance, get in touch with Spires Digital or book a free strategy call via Calendly to discuss your specific situation.