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Scaling profitable accounts is where most agencies break them. The 20% rule and the rollback triggers are non-negotiable for me. Without them, the next dollar of spend buys lower-quality traffic and the average looks fine while the marginal economics quietly turn red.
Four phases, run in order. Each phase has a hard gate. Do not skip ahead.
| Phase | What you do | Gate to advance |
|---|---|---|
| 1. Health check | 5-metric audit + tracking validation | 4 of 5 metrics green |
| 2. Budget scaling | Apply the 20% weekly cap, evaluate, reset | CPA holds within 15% of baseline at new spend |
| 3. Expansion | Adjacent keywords, new campaign types if volume allows | New campaigns clear baseline thresholds before more spend |
| 4. Risk management | Pre-defined rollback triggers, weekly monitoring | Continuous |
For the strategic frame on demand ceilings, marginal CPA, and the lever order before you touch the budget, see scaling-playbook. Use this playbook when you are ready to execute; use that one when you are deciding whether to.
| Step | Toolkit |
|---|---|
| Validate tracking before any scaling | measurement-playbook, conversion-tracking-audit |
| Diagnose demand ceiling before scaling | demand-ceiling-analyzer |
| Decide scale vs fix first | scale-or-fix-decision, scale-readiness-audit |
| Set up daily pacing during scaling | budget-pacer, pacing-intelligence |
| Test before full rollout | pilot-strategy-builder |
| Add channel after Search ceiling hit | channel-expansion-planner |
| Weekly rhythm during scaling | weekly-pulse |
Before scaling, verify these prerequisites:
| Metric | Target | Your Value |
|---|---|---|
| CPA | Below target | _____ |
| ROAS | Above target | _____ |
| Conv. Rate | >2% (Search) | _____ |
| Quality Score | Avg >6 | _____ |
| Impression Share | >60% (Brand) | _____ |
Gate: Do NOT proceed to Phase 2 unless at least 4/5 metrics are green.
Never increase budget by more than 20% per week. Larger jumps reset Smart Bidding learning.
Week 1: $10,000 → $12,000 (+20%)
Week 2: $12,000 → $14,400 (+20%)
Week 3: $14,400 → $17,280 (+20%)
Week 4: $17,280 → $20,736 (+20%)
Week 5: Pause and evaluate for 1 week
Week 6: Resume if CPA within 15% of baseline| Campaign Type | Current % | Scaling Priority | Target % |
|---|---|---|---|
| Brand | 15% | Hold | 10% |
| Top Performers | 40% | Scale First | 45% |
| Mid Performers | 25% | Scale Second | 30% |
| Testing | 20% | Reduce | 15% |
Decision tree for expansion:
Have 50+ conversions/month?
├── YES → Test Performance Max
│ ├── Budget: 20% of Search spend
│ └── Run for 6 weeks minimum
└── NO → Stay with Search
└── Focus on conversion volume firstStop scaling immediately if:
