How to Choose a PPC Agency for Your SaaS (Without Getting Burned)

Picking a PPC agency for your SaaS is one of the highest-leverage decisions you'll make. A good one can shave months off your growth curve. A bad one will burn through €50K of ad budget plus their fees, leave you with worse data than you started with, and set you back six months.

The problem is that most agencies sound the same in sales calls. "We're data-driven." "We optimize for revenue." "Pipeline, not clicks." Everyone says it. Almost nobody does it.

This guide is the framework I use when SaaS founders ask me which agency to hire (yes, even when it's not us). It's the questions to ask, the red flags to watch for, and the honest test of whether you should even hire an agency in the first place.

If you're about to sign a contract or interview agencies next week, read this first.

First, should you even hire an agency?

The honest answer: probably not yet.

Most early-stage SaaS companies hire an agency too soon. They have a half-working product, no clear ICP, a leaky funnel, and they think pouring €5K/month into Google Ads with an agency will fix it. It won't. An agency amplifies what's already working. If nothing's working yet, the agency makes it worse, not better.

Hire an agency if all of these are true:

If you're in the "wait" column, fix those first. An agency won't fix product-market fit.

The 5 red flags that should make you walk away

I've audited 50+ SaaS Google Ads accounts that came from "expert" agencies. The same patterns show up over and over.

1. They report on impressions and CTR but not on pipeline.

If your agency's monthly report has 30 slides and not a single one shows revenue, qualified leads, or pipeline generated, run. Vanity metrics are how bad agencies hide bad results. A good agency leads with the metrics that matter to your business and uses Google Ads metrics only as supporting evidence.

2. They never connect your CRM to Google Ads.

This is the single biggest red flag in B2B SaaS. If your agency hasn't set up offline conversion imports between your CRM (HubSpot, Salesforce, Pipedrive) and Google Ads within the first 30 days, they don't know what they're doing. Without this connection, the algorithm optimizes for form fills instead of customers. The fact that 70% of agencies don't do this is exactly why most accounts underperform.

3. They have one playbook for everyone.

A SaaS selling a $5K product to small businesses needs a completely different strategy than a SaaS selling a $200K product to enterprises. If the agency proposes the same campaign structure, same conversion strategy, and same KPIs regardless of your model, they're applying e-commerce logic to your business. It won't work.

4. They're invisible after onboarding.

Bad agencies sell hard during sales, hand the account to a junior account manager after the contract is signed, and ghost you for the rest of the engagement. You never speak to the strategist who pitched you. Updates come once a month. Questions take three days to answer. If the agency doesn't have a clear communication cadence (weekly update, monthly strategy call, Slack response within hours), this is what's coming.

5. They lock you into long contracts.

A 12-month contract with cancellation fees is how bad agencies guarantee revenue without delivering results. If they can't keep you happy enough to stay month-to-month, they shouldn't be locking you in. The best agencies offer 30-day notice contracts because they're confident in the work.

The 10 questions to ask in the discovery call

Sales calls with agencies are often heavily scripted. The agency drives the conversation, talks about their process, shows their case studies, and asks you about your business. By the end you know everything about them. They know nothing about whether they should work with you.

Flip that. Show up with these 10 questions and watch how they answer.

1. How many SaaS clients have you worked with in the last 12 months? Look for: specific numbers, types of SaaS, ACV ranges. If they say "we work with all kinds of B2B clients," they're not specialized.

2. What's your typical CAC reduction in the first 90 days? Look for: a specific number range with caveats, not a guarantee. "We typically see 20-35% CAC reduction within 90 days, but it depends on how poorly the account is set up to begin with" is a great answer. "We guarantee 50% reduction" is a red flag.

3. Walk me through how you'd connect our CRM to Google Ads. Look for: specific tools, native integrations, GCLID handling, conversion event mapping. If they hesitate or say "we'll figure it out," they've never done it.

4. What does your typical monthly report look like? Look for: pipeline generated, qualified leads, cost per SQL, ROAS. Ask to see a real anonymized example. If they only show clicks, impressions, and CTR, that's all they care about.

5. Who will actually be working on my account? Look for: a named senior strategist with specific experience. If the answer is "we'll assign an account manager," ask if you can meet them. The person who runs your account day-to-day is more important than the person on the sales call.

6. Can I talk to two of your current SaaS clients? Look for: yes, with specific introductions in the next week. If they say "we don't share client contacts," they have nothing to show. Real clients vouch for real agencies.

7. What's your communication cadence? Look for: weekly update document, monthly strategy call, Slack or shared channel for fast questions. If they say "we'll send a monthly report," that's not a partnership, that's a vendor.

8. What happens in month one? Look for: a clear week-by-week breakdown. Audit, tracking setup, account restructure, first new campaigns by week 4. If they don't have a structured first 30 days, they're winging it.

9. What kinds of SaaS should not work with you? The honesty test. A confident agency will say "we don't work with SaaS below €500K ARR because they don't have enough volume yet" or "we don't take on accounts below €5K/month budget because we can't make it profitable for either side." If they say "we work with everyone," they don't have a real ICP.

10. What's your contract structure? Look for: 30-day notice, no cancellation fees, ad spend kept in your account (not theirs). If anything else, walk away.

What it actually costs

Pricing in PPC agencies is all over the place. Some charge a flat retainer. Some take a percentage of ad spend. Some bundle services into mystery packages. Here's what's normal in 2026.

Retainer (most common for full-service management): €2,000 to €8,000 per month for SaaS agencies in Europe. The €2K end is freelancers or small boutiques. €4-5K is the sweet spot for established SaaS-focused agencies. Above €6K you're typically looking at agencies serving Series B+ companies with €50K+ monthly ad budgets.

Percentage of ad spend: Some agencies charge 10-20% of monthly ad spend. This aligns incentives in theory (they make more when you spend more), but creates conflict in practice (they're incentivized to push higher budgets). Avoid this model unless you have very stable spend.

One-time audits: €1,500 to €5,000 for a full audit with a prioritized action plan. Cheaper than a retainer, useful if you have an in-house team that just needs senior input. Most agencies use audits as a sales tool to win retainer clients, so the audit price is sometimes lower than its real value.

Setup fees: €2,000 to €8,000 one-time for account setup, tracking, CRM integration. Some agencies bundle this in the first month's retainer. Others charge separately. Either way is fine, just know what you're paying for.

A note on cheap agencies: If someone offers you full Google Ads management for €800/month, you're getting €800 worth of attention. Which is to say almost none. They have 30+ clients, junior staff, and they spend 2 hours a month on your account. Not worth it.

In-house vs agency vs freelancer

Not every SaaS should hire an agency. Here's how to think about it.

Hire an agency when:

• You're under €30K MRR and can't afford a senior PPC hire (€80-120K/year)
• You need expertise across Search, Display, PMax, and YouTube without committing to a full-time hire
• You want senior strategists involved without paying senior salaries
• You're growing fast and don't have time to build internal expertise

Hire in-house when:

• You're past Series B and Google Ads is a major channel (€50K+/month spend)
• You have other paid channels that need integration (LinkedIn, Meta, etc.)
• Your business is complex enough that the learning curve is worth a full-time hire
• You want absolute control and dedicated focus

Hire a freelancer when:

• You have a small budget (<€3K/month for ads)
• You only need someone to keep the lights on, not strategic input
• You want flexibility without committing to a retainer
• The risk: freelancers are inconsistent. Some are excellent, some disappear.

The first 30 days are everything

Once you sign with an agency, the first 30 days tell you whether you made the right call. Here's what should happen.

Week 1: Audit and access. The agency reviews your existing account, your CRM, your sales process, your ICP, your competitor landscape. They flag wasted spend, broken tracking, and misaligned conversion goals. By end of week 1, you should have a written audit document with prioritized findings.

Week 2: Tracking and integration. This is the most critical week. The agency connects your CRM to Google Ads. Sets up offline conversion imports for SQL, Opportunity, and Closed-Won. Verifies GCLID is captured. Restructures conversion actions to match what actually matters. If this doesn't happen in week 2, raise the alarm.

Week 3: Account restructure. Brand vs non-brand separation. Campaign structure aligned with your buyer journey. Negative keyword lists built and applied. Underperforming campaigns paused or killed. New search campaigns drafted and ready to launch.

Week 4: Launch and learn. New campaigns live. Daily monitoring. First adjustments based on early data. End of month one report: what was found, what was changed, what's running, what to expect next month.

If your agency hasn't done all four of these by day 30, you have a problem. Either they're too slow or they don't have the expertise. Have a hard conversation immediately.

The bottom line

Hiring a PPC agency for your SaaS is a high-stakes decision, but it doesn't have to be a gamble. Use the questions above. Watch for the red flags. Start with a paid audit if you're not sure, so you can evaluate the work before committing to a retainer. And if no agency you talk to feels right, hire a freelancer for three months until you find the right fit.

The goal isn't to find a vendor. The goal is to find a partner who treats your business like their own.