Manage Google Ads Yourself or Hire an Agency?
Managing Google Ads yourself vs. hiring an agency: costs, time investment, expertise, and when an agency makes the difference.
Comparison Table
| Criterion | Selbst verwalten | Agentur beauftragen |
|---|---|---|
| Monthly Costs | Only ad budget + your time | Ad budget + agency fee (15-25% or flat) |
| Time Investment per Week | 5-15 hours | 1-2 hours (coordination) |
| Expertise Level | Learning curve, limited experience | Deep experience across industries |
| Typical ROAS | 1-3x (beginner), 3-5x (experienced) | 4-8x (established agency) |
Our Verdict
It dependsUnder €1,000/month budget: self-management often makes more sense. Over €2,000: a good agency saves more than it costs.
Detailed Analysis
Google Ads in-house or agency — the honest cost calculation
The decision is rarely calculated honestly. "In-house saves €1,500 in agency fees" usually ignores the hidden costs of your own time, the learning curve, and expensive beginner mistakes. "Agency is always better" overlooks the many bad agencies that burn money and fake performance.
What Google Ads management actually costs
Decent Google Ads management is not just clicking in the UI. Realistic weekly effort for an account with €3,000–€8,000 media budget:
- Performance review: 1–2 h / week.
- Bid & budget adjustments: 1 h / week.
- Ad copy & asset refresh: 1–2 h / week.
- Negative keywords & search-term cleanup: 1 h / week.
- Landing page & conversion optimization: 2–4 h / week.
- Reporting & strategy: 1 h / week.
Total: 7–11 hours / week for proper management. Anyone covering this with "2 h on the side" isn't running Google Ads — they're running a controlled money fire.
The real cost matrix
Self-management — real cost
- Your time: 7–11 h × 4.3 weeks = 30–47 h / month. At a marketer rate of €60–90 / h, that's an opportunity cost of €1,800–€4,200 / month.
- Learning curve: First 6 months are statistically 20–40% weaker in performance than an experienced marketer — at €5,000 media spend that's €1,000–€2,000 wasted per month.
- Tools: SEMrush / Optmyzr / Whatagraph / server-side tag — quickly €150–350 / month.
- Opportunity cost: Whatever you don't do because you're in the Google Ads UI.
Agency — real cost
- Management fee: Typically 15–25% of media budget or flat €600–€2,500 / month. Below €500 / month, performance marketing isn't viable for the agency — they compensate via volume (too little time per account).
- Setup fee: One-time €800–€3,500.
- "Reality" cost: 2–4 weeks of onboarding explaining your data and brand context.
- Switch risk: Bad agencies cost you not just money — but 3–6 months you don't realize they're losing for you.
When in-house makes sense
- Media budget < €1,500 / month: Agency fees would make performance impossible.
- You have an experienced in-house marketer: Ideally 3+ years Google Ads in your vertical.
- Highly niche product with deep domain knowledge: Specialty publishers or medical B2B may take longer briefing an agency than optimizing themselves.
- Long-term skill build inside the company: Investment decision, not performance decision.
When an agency is the right call
- Media budget > €3,000 / month: Pro management almost always pays — efficiency gain exceeds fee.
- Complex account structure: Multiple countries, languages, product lines, PMax + Shopping + Search in parallel.
- Fast scaling plans: Doubling budget in 6 months — agency experience prevents expensive scaling mistakes.
- No relevant marketing person: Hanging a €60k marketer to "also do ads" is structurally more expensive than a specialized agency.
The hybrid option few discuss
For many companies, consulting + in-house execution is the most honest path. Concretely: you pay a senior specialist €800–€1,500 / month for strategy, audit, monthly sparring sessions, and account setup. You handle ongoing maintenance yourself (3–5 h / week instead of 7–11). You learn, retain data sovereignty, and have someone who keeps you from major mistakes.
This hybrid approach is especially useful at media budgets between €1,500 and €5,000 / month.
Red flags in agency selection
- Long mandatory contract: Anyone demanding 12-month notice upfront knows their output won't convince over 3 months.
- Performance promises without data: "We guarantee ROAS 4" without ever seeing your account, margins, or conversion tracking — unprofessional.
- No direct account access: Your agency should work under your Google Ads account that you own — not an agency master account you lose on switch.
- No senior contact: If post-signing you only talk to junior account managers.
- Reporting only in agency dashboards: You should have direct access to Google Ads data — agency dashboards are routinely curated.
Rule of thumb for the decision
Multiply your monthly media budget by your hourly rate × 30 h (typical monthly management). If the sum is lower than a realistic agency fee — in-house. If the sum is higher and you'd also benefit from investing those hours in your core business — agency. If unsure: start hybrid, learn for 6 months, then make an informed call.