Insights, Marketing

How I’d Scale a B2B SaaS Scale-Up Struggling with High Customer Acquisition Costs (CAC)

by Ryan James

founder of Rocket SaaS



Growing a B2B SaaS company is challenging, especially when customer acquisition costs (CAC) are too high and payback periods stretch too long. Many SaaS scale-ups reach a point where they can bring in customers, but the cost of acquiring them makes growth unsustainable.

Marketing can’t just be about getting more leads, it has to be about getting the right leads, converting them more efficiently, and reducing reliance on expensive acquisition channels.

Here’s the scenario I’m dealing with:

The Scenario

  • Industry: B2B SaaS Scale-Up
  • Company Headcount: 20–50 employees
  • Marketing Budget: £10,000 per month
  • Current CAC: Too high, payback period exceeding 12–18 months
  • Sales Model: Likely a mix of inbound and outbound
  • Challenges:
    • Over-reliance on paid ads
    • Low conversion rates on website and landing pages
    • High drop-off in the sales funnel
    • Struggling to close high-value accounts efficiently

If I were responsible for fixing this, my focus would be on three things: improving website conversion rate optimisation (CRO), reducing reliance on paid ads through organic inbound, and leveraging account-based marketing (ABM) for higher-value deals.

Fixing the Funnel: Website Conversion Rate Optimisation (CRO)

Spending money on traffic is pointless if the conversion journey is broken. Before scaling anything, I’d look at where leads are dropping off and optimise for efficiency.

Step 1: Identifying the Bottlenecks

I’d start by analysing:

  • Website & Landing Page Conversion Rates: How many visitors take action?
  • Lead-to-SQL Rate: Are the right people booking demos, or is sales wasting time on unqualified leads?
  • Demo-to-Close Rate: Where are deals getting stuck in the pipeline?

If the website is leaking leads, I’d start there.

Step 2: Improving the Website & Landing Pages

Many SaaS websites use buzzwords or overly technical content rather than focusing on converting visitors into pipeline. I’d look at:

  • Clearer value-driven messaging that speaks directly to the ICP’s pain points.
  • Removing friction in the demo booking process (fewer form fields, stronger CTA placement).
  • Adding real-world proof (logos, testimonials, case studies) where prospects are dropping off.

If the issue is further down the funnel, I’d work with sales to refine the qualification process and improve nurture sequences. I’d consider being transparent with pricing on the website to reduce the number of low quality leads, if this was an issue.

Reducing Reliance on Paid Ads Through Organic Inbound

A major reason CAC becomes unsustainable is over-reliance on paid ads.

To balance the equation, I’d double down on organic inbound strategies.

Step 1: Creating High-Value Thought Leadership Content

Instead of writing generic blog posts, I’d focus on deep industry insights from the thought leaders in the company.

This would include:

  • Monthly thought leadership interviews with the CEO, product leads, or top customers.
  • Industry benchmarking reports to establish authority.
  • Use case-driven content (e.g., “How [Industry] Companies Are Cutting Costs with [Product]”).

Step 2: Distributing Content with AI support

To maximise reach, I’d repurpose the thought leader interviews in multiple formats. Using Riverside to record the interviews and Otter.ai to transcribe the interviews, I would then use AI to repurpose the video and transcript into multiple content formats:

  • LinkedIn posts from the CEO and leadership team.
  • Short-form video snippets for LinkedIn and YouTube.
  • Guides and whitepapers for deep insights
  • Webinars and virtual roundtables to nurture high-value prospects.

Feeding AI with the thought leader interviews will result in high-quality content rather than generic AI crap.

This approach would build demand over time, reducing the reliance on constantly paying high costs for leads.

Doubling Down on Use Cases

One of the toughest challenges for SaaS scale-ups is that their product is difficult to explain in broad terms. It’s much easier to market when it’s tied to a specific use case.

For every existing customer, I’d create a dedicated use case asset that breaks down exactly how they use the product, what problem it solved, and the tangible results. This wouldn’t just be a case study, it would be a full suite of assets designed to drive awareness and conversions.

Creating High-Impact Use Case Assets

Each use case would include:

  • A dedicated web page that explains the solution for a specific industry or problem.
  • An infographic that visually simplifies the workflow.
  • LinkedIn Ads targeting similar businesses.
  • Organic social posts showcasing real results.
  • A PDF version for the sales team to use in outreach.
  • If the customer is willing, a video testimonial to add credibility.

These assets would then be used in ABM campaigns to get in front of the right accounts. Instead of trying to market broadly, I’d focus on hyper-targeted campaigns that speak directly to niche problems.

Leveraging ABM for Higher-Value Deals

When CAC is high, the easiest way to fix it is by closing bigger deals more efficiently. Instead of trying to lower costs across the board, I’d focus on winning high-value accounts with ABM.

Step 1: Building a Targeted Account List

I’d work with sales to identify 50–100 ideal-fit accounts based on revenue potential, industry, and existing customer success stories.

Using LinkedIn Sales Navigator and Apollo.io, I’d refine the list based on:

  • Buying signals (funding rounds, leadership changes, hiring trends).
  • Firmographic data (company size, tech stack, geography).
  • Intent data (who’s actively researching solutions like ours?).

Step 2: Crafting a Multi-Touch ABM Campaign

Instead of running broad, high-CPC ads, I’d hyper-target decision-makers with:

  • LinkedIn Ads that educate before selling.
  • Personalised landing pages for each industry or account segment.
  • Email & social outreach that references specific pain points and success stories.

Step 3: Creating Content for the Buying Committee

Enterprise deals often stall because the wrong person is championing the product internally. I’d create tailored content for different stakeholders:

  • For CFOs: ROI-focused reports.
  • For end users: Workflow demos and case studies.
  • For IT teams: Security and compliance documentation.

This ensures that all decision-makers are engaged early, reducing friction later in the sales process.

Adjusting the Paid Ads Strategy for Efficiency

Scaling back ad spend doesn’t mean stopping it altogether, it means spending smarter. I’d optimise the paid strategy by:

  • Shifting budget towards retargeting. Instead of constantly hunting cold leads, I’d focus on bringing back warm leads with Meta and LinkedIn retargeting ads.
  • Focusing on conversion-optimised landing pages. No sending ad traffic to the homepage. Every ad click should go to a high-intent, industry-specific landing page.
  • Testing LinkedIn conversation ads. These often outperform traditional lead gen forms by making the experience feel more personal and interactive.

With these adjustments, the goal would be to reduce CAC while maintaining lead volume.

What Success Looks Like After Six Months

By executing this strategy, here’s what I’d expect:

  • CAC reduced by 20–40% through better targeting, CRO, and organic inbound.
  • Shorter payback periods as conversion rates improve across the funnel.
  • More high-value deals closed through ABM and stronger sales alignment.
  • Organic pipeline growing through strategic thought leadership and content distribution.
  • More efficient paid ad spend with a higher proportion going to warm audiences.

Scaling a B2B SaaS isn’t just about spending more, it’s about spending smarter. If your CAC is unsustainable, these are the levers I’d pull to fix it.

If this resonates with your business and challenges, and you are in need of marketing support to make this happen, this is exactly what me and my agency, Rocket SaaS, do for our clients. We create a strategy (like the above), then put the team in place to execute, working in alignment with your in-house resources.

If you’d like to discuss working together, let’s start with a free, no-obligation SaaS marketing strategy call.



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By Ryan James

Founder @ Rocket SaaS

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