Google Ads in 2026: How to Split Budget Across PMax, AI Max, and Demand Gen
Summary
Google quietly restructured how paid search is supposed to work in 2026. There are now three campaign types Google expects you to run in tandem: Performance Max (full-funnel), AI Max for Search (keywordless search replacement), and Demand Gen (mid-to-upper funnel discovery). Google calls this the “Power Pack.”
Most brands we audit are running one or two of these. The accounts running all three correctly — with the right budget allocation — are outperforming the ones still using Conversions campaigns + manual ad sets by 20-40% in 2026.
This article gives you the actual budget allocation we use across Pixel Movers’ active e-commerce and lead-gen accounts, what changed in the January 2026 Demand Gen Drop, and where AI Max for Search fits in. Based on $2M+ in annual ad spend across UAE, KSA, Pakistan, US, and UK accounts.
Quick answer: For e-commerce in 2026, start at 50-60% Performance Max, 30-40% AI Max for Search, and 10-20% Demand Gen. For B2B and lead-gen, flip the weight — 30-40% Performance Max, 50-60% AI Max for Search, 10-20% Demand Gen. Don’t run any single campaign type in isolation — the cross-campaign attribution lift is real.
What changed in Google Ads in 2025-2026
Three significant shifts happened over the last 18 months that brands are still adapting to:
1. AI Max for Search launched in 2025
AI Max is Google’s “keywordless” search campaign type. Instead of bidding on specific keywords, you provide assets (headlines, descriptions, URLs) and Google’s AI matches your ads to relevant search queries based on user intent and context. Internal Google testing showed AI Max with Smart Bidding Exploration delivered 18% more unique search query categories with conversions and 19% more conversions overall versus equivalent Search campaigns.
What this means: Traditional keyword-based Search campaigns aren’t gone, but they’re being slowly absorbed. Industry expectations are that DSA (Dynamic Search Ads) will be deprecated into AI Max within 12-18 months. If you’re still running heavy DSA, start migrating.
2. The January 2026 Demand Gen Drop
In January 2026, Google rolled out major updates to Demand Gen including Shoppable CTV (Connected TV shopping), Promoted Pins in Maps as Demand Gen inventory, brand-search lift conversion actions, and YouTube engagement goals.
The biggest behavioral shift: Demand Gen now competes for conversion credit at the mid-to-low funnel, not just upper funnel. Many advertisers saw Demand Gen suddenly driving more front-end conversions without changing anything. The campaign type matured into a core part of the Google Ads ecosystem, not just an awareness layer.
3. Performance Max got transparency tools
After years of criticism that PMax was a “black box,” Google delivered meaningful transparency and control in 2025: - Asset-level performance ratings - Channel-level reporting (Search, Shopping, Display, YouTube breakdown) - Search themes for direction - Final URL controls - Account-level negative keywords (long awaited)
PMax is no longer a leap of faith. It’s now a controllable, optimizable channel — which is why it’s grown to 71% of advertisers using it (up from 60% in 2024).
The Power Pack: Google’s recommended 2026 structure
Google now openly promotes a three-campaign structure for full-funnel coverage:
| Campaign Type | Funnel Position | Primary Surfaces | Best For |
|---|---|---|---|
| AI Max for Search | High intent / bottom funnel | Search, Search Partners | Captures existing demand |
| Performance Max | Full-funnel, cross-channel | Search, Shopping, Display, YouTube, Gmail, Discover, Maps | Scales conversions across surfaces |
| Demand Gen | Mid-to-upper funnel | YouTube, Gmail, Discover, Maps | Builds new demand from visual creative |
These aren’t redundant — they target different buyer states. The reason to run all three is that they feed each other: Demand Gen builds awareness that Performance Max converts; AI Max for Search captures the high-intent searches that Demand Gen creates.
Budget allocation by business type (2026 benchmarks)
Based on what we see in healthy accounts in our portfolio. These are starting points — actual splits should adjust based on data after 60 days.
E-commerce (most categories)
| Campaign Type | % of Budget | Reasoning |
|---|---|---|
| Performance Max | 50-60% | Catalogue + cross-channel reach drives the bulk of conversions |
| AI Max for Search | 30-40% | High-intent searches still convert at the highest rates |
| Demand Gen | 10-20% | Visual discovery for category-led brands (fashion, beauty, home) |
Luxury / fashion e-commerce
| Campaign Type | % of Budget | Reasoning |
|---|---|---|
| Performance Max | 40-50% | Lower share — luxury catalogues benefit from more control |
| AI Max for Search | 25-35% | Brand searches dominate; conversion concentrated here |
| Demand Gen | 20-30% | Higher share — visual discovery + brand storytelling matters more |
B2B / lead generation
| Campaign Type | % of Budget | Reasoning |
|---|---|---|
| Performance Max | 30-40% | Lower share — less catalogue, harder to optimize on lead value |
| AI Max for Search | 50-60% | Highest share — intent-driven search is dominant |
| Demand Gen | 10-15% | Lowest share — long sales cycles make discovery harder to attribute |
Hospitality / vacation rentals
| Campaign Type | % of Budget | Reasoning |
|---|---|---|
| Performance Max | 45-55% | Cross-channel works well for booking discovery |
| AI Max for Search | 35-45% | Direct booking searches need to be captured |
| Demand Gen | 10-15% | Visual property discovery on Discover and YouTube |
Why running just one campaign type underperforms in 2026
We see three common patterns in accounts that underperform:
Pattern 1: “PMax only” accounts
Brands that put 100% of budget into Performance Max miss the high-intent search traffic that AI Max for Search captures. PMax does serve on Search, but it competes against other PMax campaigns and Search campaigns — accounts running PMax-only typically see 15-25% lower coverage of branded and high-intent unbranded searches.
Pattern 2: “Search only, no PMax” accounts
The opposite mistake — brands that refuse to run PMax because it’s a “black box.” Now that PMax has transparency tools, this is no longer defensible. PMax accesses surfaces (Shopping, Display, YouTube, Gmail, Discover) that Search campaigns can’t reach. Search-only accounts cap their conversion ceiling at the volume of people actively typing in queries.
Pattern 3: “No Demand Gen” accounts
Most common. Brands that run PMax + Search but skip Demand Gen miss the upper-funnel demand generation. This shows up as flat search volume — you’re capturing the demand that exists but never creating new demand. Brands that add Demand Gen typically see a 10-15% lift in branded search volume within 60-90 days as awareness builds.
What to test in your account this month
If you’re currently running PMax + Search, here’s the migration path to the full Power Pack:
Week 1: Audit current spend distribution
Pull a 30-day spend report. Calculate your current allocation across campaign types. Compare to the benchmarks above. If you’re outside the recommended range, you’ve identified your starting test.
Week 2-3: Add AI Max for Search
If you don’t have AI Max running, this is the highest-priority test. Create an AI Max campaign with: - 15-30 headlines and 4-5 descriptions - Final URL expansion enabled - Text customization on - Smart Bidding Exploration enabled - Target ROAS or Max Conversion Value bid strategy
Start at 10-15% of total budget. After 14 days, compare AI Max efficiency against your existing Search campaigns. In most accounts we test, AI Max outperforms manual Search within 21-30 days.
Week 4-6: Layer in Demand Gen
If you don’t have Demand Gen running, add a campaign with: - Native video + image assets (vertical 9:16 + square 1:1 + horizontal 16:9) - Lookalike audiences from your highest-value customer list - Optimized for Conversions (not Reach or Brand Awareness) - Shoppable CTV inventory if your product fits
Budget: 10% of total to start. Watch the 30-day brand-search lift conversion metric (added in January 2026) to measure incremental impact.
Week 7-12: Rebalance
After 6 weeks of all three running, you have enough data to rebalance. Move budget toward the campaign type delivering the best blended ROAS. Don’t be afraid to shift 5-10% per week as data evolves.
What about traditional Search campaigns and DSA?
They still work. But the trend is clear: AI Max is absorbing both over time.
Recommendation for 2026: - Keep brand campaigns as traditional Search (you want exact match control here) - Migrate generic Search to AI Max if you have 50+ monthly conversions in the account - Begin testing AI Max as a DSA replacement — Google has signalled DSA deprecation is likely in 12-18 months
If your account has fewer than 30 conversions per month, AI Max may not have enough data to perform. Stay on manual Search until volume grows.
Common mistakes brands make migrating to the Power Pack
After running this migration with multiple clients, here are the patterns that consistently kill performance:
1. Activating all three campaigns at once with no creative refresh
Three new campaigns × the same tired creative = three under-performing campaigns. Plan for 30-50% more creative production when you add Demand Gen.
2. Not separating Brand from Generic
Brand campaigns should stay in traditional Search with exact match. If you let PMax or AI Max absorb branded queries, you’ll pay 3-10× more per click for traffic that would have converted anyway.
3. Over-segmenting Performance Max
Splitting PMax into too many campaigns (one per product category, one per region, etc.) fragments the learning signal. Google’s algorithm needs concentrated conversion data to optimize. Rule of thumb: only segment if each campaign will get 30+ conversions per month.
4. Setting Demand Gen ROAS targets too high
Demand Gen is mid-funnel. Setting a “must hit 6× ROAS in week 1” target starves the algorithm of impression share. Use Max Conversions or Max Conversion Value for the first 30-60 days, then add a tROAS target after learning stabilizes.
5. Ignoring the brand-search lift metric
The new “Brand Lift” conversion action (added January 2026) measures how many users searched for your brand after seeing a Demand Gen or PMax ad. This is the metric that proves Demand Gen is working when direct ROAS doesn’t show it. Watch this number.
Frequently asked questions
What is the Google Ads Power Pack?
The Power Pack is Google’s recommended three-campaign structure for 2026: Performance Max for full-funnel cross-channel coverage, AI Max for Search for keywordless intent capture, and Demand Gen for mid-to-upper funnel discovery. All three campaign types are AI-driven and designed to work together.
How much should I budget for Demand Gen vs Performance Max?
For e-commerce in 2026, start with roughly 50-60% Performance Max, 30-40% AI Max for Search, and 10-20% Demand Gen. Adjust based on 30-60 days of data. For B2B or lead generation, increase the AI Max share to 50-60% since search intent dominates.
Is AI Max for Search replacing traditional Search campaigns?
Not yet, but the direction is clear. Google has signaled DSA (Dynamic Search Ads) will likely be deprecated and consolidated into AI Max within 12-18 months. Branded Search campaigns remain valuable for exact-match control, but generic Search should migrate to AI Max for accounts with 50+ monthly conversions.
Do I need video creative for Demand Gen?
Yes. Demand Gen campaigns with vertical video (9:16) and horizontal video (16:9) outperform image-only campaigns by 25-40% in our portfolio. Static images alone limit Demand Gen’s effectiveness — the campaign type is designed for visual storytelling on YouTube, Discover, and Gmail.
How long does the Power Pack take to start working?
Each campaign type needs 14-21 days of learning to stabilize. The full Power Pack synergy (where Demand Gen feeds Search demand, which PMax converts) typically takes 60-90 days to show up in blended metrics. Don’t pull budget too early.
What we’d recommend doing next
If you’re a brand running Google Ads in 2026 and not yet on the Power Pack structure:
- Audit your current allocation — pull last 30 days of spend by campaign type. Compare against the benchmarks in this article.
- Add the missing campaign type first — most accounts are missing either AI Max or Demand Gen. Start with whichever is missing.
- Plan creative production for Demand Gen — without fresh native video and image assets, Demand Gen won’t perform. Budget 30-50% additional creative spend for the first quarter.
- Watch the brand-search lift metric — it’s the canary for whether your Power Pack is actually building demand or just shifting it around.
If you want senior buyers running this exact structure on your account, book a $100 audit. We’ll review your current setup, model the Power Pack migration, and deliver a 90-day rebalancing plan within 5 business days.
Or learn more about our Performance Marketing service, which covers the Power Pack structure across UAE, KSA, Pakistan, US, and UK accounts.
About Pixel Movers: We run Google Ads campaigns including the full Power Pack structure for brands like SerMobile (UAE e-commerce, 11× ROAS), Sable Vogue (Pakistan luxury fashion), and Sobia Nazir (international luxury fashion, 13× international ROAS). We’ve managed over $2M in paid media spend across 15+ accounts in the last 12 months. Learn more about us →
