Most "best agency" lists are written by the agencies on them. Here is a scorecard you can use instead: what to check, the questions to ask, the red flags, how pricing works and how to run a fair first 90 days.
Search for "best SaaS marketing agency" and most of the results are lists published by agencies, often with the publisher near the top. That doesn't make them useless, but it does mean you need your own way to judge. This guide gives you one. We're an agency too, so we've kept it to criteria you can check yourself, and you can apply it to us as strictly as to anyone else.
Start with your bottleneck, not the agency
Agencies are good at different things. Before you speak to anyone, write down the one thing holding growth back. The answer decides which kind of agency you need.
- Nobody understands what we do: you need positioning and messaging first. See SaaS positioning and branding.
- Good product, no traffic: you need SEO, content or paid acquisition. See the SaaS SEO guide and the paid ads guide.
- Traffic, but few demos: you need conversion work on the site and offers. See SaaS conversion rate optimization.
- Leads, but sales says they're poor: you need tracking, a shared lead definition and better targeting. See the performance marketing system.
- Buyers ask AI tools and we're not named: you need AI search work. See the AI search optimization guide.
If you can't name the bottleneck, that's the first job, and a short paid audit or strategy project is better value than a long retainer. Our free growth audit is one way to get a second opinion.
The four kinds of SaaS marketing agency
- Specialists do one channel deeply, such as SEO, paid search or LinkedIn ads. Best when you know the channel you need.
- Full-service growth agencies cover strategy, content, ads and web together. Best when channels need to work as one system and you have no marketing team yet.
- Outsourced marketing departments provide a fractional marketing lead plus execution. Best before your first marketing hire.
- Creative and video studios make ads and brand content. Best when the bottleneck is creative volume, which matters more on Meta since its Andromeda update.
The scorecard: six things to check
Score each agency from 0 to 2 on each line. You'll find a quick interactive version further down.
- SaaS results with pipeline or revenue numbers. Traffic and rankings alone aren't enough. Ask which case studies the client approved and whether you can speak to that client.
- Fit with your stage and market. An agency built for enterprise companies may be wrong for a seed-stage startup, and the reverse. Ask for work with companies like yours.
- The people who will do the work. Meet them before signing. Ask how many clients each person handles.
- A clear scope and a written price. You should know exactly what you get each month and what costs extra.
- How they measure. They should report on pipeline, customer acquisition cost and payback, not only clicks and impressions.
- How they handle AI search. Buyers now ask ChatGPT and Google's AI for shortlists. Ask what the agency does about it and how they measure it. See AI share of voice.
Questions to ask on the first call
- What would you do in the first 30, 60 and 90 days for a company like ours?
- Which of your clients is most similar to us, and what changed for them?
- Who exactly will work on our account, and what else are they working on?
- What do you need from us each week to do good work?
- How do you report, and which numbers would tell us it isn't working?
- What happens to the content, ads accounts and data if we stop working together?
- What is the notice period, and is there a minimum term?
The last two questions matter more than they seem. You should own your ad accounts, analytics, domain and content from day one.
Red flags
- Guaranteed rankings, leads or a specific return. Nobody controls Google or the ad platforms.
- Case studies with no numbers, or only traffic numbers.
- A senior team on the pitch and a junior team on the work, with no names given.
- Long contracts before you've seen any work.
- Ad accounts or analytics set up under the agency's ownership.
- Vague pricing that grows with every request.
How SaaS agencies charge
Most SaaS agencies charge a monthly retainer for an agreed scope. Others charge per project (a website, a positioning sprint), hourly, or a percentage of ad spend. Performance-based pricing exists but is rare, because results depend on your product, sales team and price too. Many agencies don't publish prices, which makes comparison hard. We publish ours on our pricing page, and our page on agency vs in-house compares the cost of hiring instead.
- Retainer: predictable cost and a steady team; check the scope is written down.
- Project: good for fixed outputs like a website; check what happens after launch.
- Percentage of ad spend: common for paid media; it can reward spending more rather than spending well.
- Hourly: flexible, but hard to budget and easy to overrun.
Run a fair first 90 days
- Weeks 1 to 2: access, tracking check and an agreed definition of a qualified lead.
- Weeks 3 to 4: a written plan with three priorities and the numbers you'll judge them by.
- Weeks 5 to 10: the first real work: pages shipped, campaigns live, tests running.
- Weeks 11 to 13: a review against the plan. Leading signals (rankings moving, qualified leads, conversion rates) should be visible even if revenue takes longer.
SEO and AI visibility usually need several months to show their full effect, while paid tests show signal within weeks. Agree up front which signals count at 90 days for each channel.
Self-assessment
Score an agency you're considering
Answer for one agency at a time. Use the same questions for every agency on your shortlist.
0 of 6 answered
Quick quiz
Agency buying: quick check
Three questions on what you've just read.
1. An agency guarantees you'll rank first on Google in 60 days. What should you think?
2. Who should own your ad accounts and analytics?
3. What's the best first step before contacting agencies?
0 of 3 answered
Frequently asked questions
Treat them as a starting point, not a verdict. Many are published by an agency on the list. Check case studies and references yourself.
If you need several skills at once and have no marketing lead, an agency or fractional team is often faster. Once a channel is proven and needs daily attention, an in-house hire makes sense. See agency vs in-house.
Agree leading signals for 90 days and a fuller review at six months. Paid tests show signal within weeks; SEO and AI visibility take longer.
It helps. SaaS has its own metrics (CAC, payback, churn), buying committees and sales cycles. An agency without that experience will learn on your budget.
