Chapter 01 · Foundations

Every referral program is a different machine

Stefan Bader
Stefan Bader
CEO and co-founder · Cello
8 min readUpdated August 16, 2026
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The three referral program types in B2B SaaS, and how to tell which one belongs in your growth mix.

TL;DR

There are three kinds of referral program, and they are not variations on one idea. User referrals ask your existing users to bring in peers: bottom of funnel, the highest conversion rate of the three, and they compound as your user base grows. Affiliates pay external creators for performance, which scales past your user base entirely. Influencers are paid upfront for reach, and buy awareness rather than conversions.

Which one you start with comes down to a single number. Above roughly 1,000 monthly active users, start with user referrals. Below it they have nothing to run on, and affiliates are the better first move.

Then five things have to happen in order: a product worth referring, discoverability, incentive design, launch and GTM, and the compliance work that survives scale. Each one is wasted effort if the one above it is not in place, which is why teams that start with incentive design end up rebuilding.

02

The rise of referral programs in B2B SaaS

“Share Dropbox with your friends, get 500MB of free storage.” This legendary referral loop is most likely very familiar to most of you. Between September 2008 and December 2009, roughly fifteen months, Dropbox grew its user numbers by 3900%. Now a few years in, Dropbox is one of Silicon Valley's most iconic digital SaaS brands. Referral programs have become a staple in the B2C sector, yet their full potential remains largely untapped in B2B.

B2B SaaS is witnessing a transformative era. Product-led growth (PLG) reshapes purchasing decisions and journeys, blending the once-clear lines between B2B and B2C channels. Gone are the days when software acquisition was a linear journey. Now, purchasing decisions are influenced by a wide spectrum of actors, from personal networks to professional partners.

Understanding and leveraging these dynamics is key. Nielsen's 2021 Trust in Advertising study found that 88% of respondents trust recommendations from people they know above any other advertising format. And word-of-mouth is still the biggest acquisition channel B2B SaaS companies report: 30% of respondents named it in BCG's Winning Strategies for B2B SaaS Companies (September 2024), a modest decline from 34% the year before.

In addition, rising CACs for legacy channels (Paid, SEO, etc.) and the challenging macro environment (e.g. energy crisis, inflation) require SaaS companies to look for more cost-efficient growth channels.

Why it matters: the power of referrals

Every SaaS company should have a referral strategy, but the upside and the risks both need to be understood before you pick a program.

It is more critical than ever to emphasize the need for a strategic approach to referrals, blending the power of different referral programs: user experiences with partner networks to amplify brand reach, credibility, and conversions.

This hybrid dynamic is gaining traction in B2B PLG, yet it’s hard to distinguish between user and partner referrals.

The same program, two outcomes (Source: Cello). The difference is design: who you target, what you reward, and how much machinery it takes to run.
03

The different categories of B2B referral programs

B2B referral programs can have different shapes and forms. Generally, we differentiate between user and partner referrals. Partner referrals can be subcategorized by affiliate and influencer referral programs.

Both growth channels are targeted to amplify a product's word-of-mouth by using social proof psychology. For example, user referrals leverage a friend’s recommendation, whereas influencers build on personal brand equity to promote a product.

User referrals

Existing users are incentivized to share the product with their network, mostly one to one. What the user actually meets is a referral page: the reward, the mechanic and the proof, on one screen.

Typeform's referral landing page (Source: Typeform). A user program is judged on how clearly it answers one question for someone who already uses the product: what do I get, and how.

Affiliate referrals

Affiliates are external creators, reviewers and integrators who promote the product for performance-based pay. Unlike a user, an affiliate works the program as a job, so the artifact of the category is the partner dashboard: tracked links, earnings and standing against other partners, all self-serve.

An affiliate partner dashboard (Source: Cello). A user program needs one clear page; an affiliate program needs an ongoing account, because the partner has to track and be paid for performance over time.

Influencer referrals

Influencers sit at the top end of affiliates: large creators with niche celebrity status, usually paid upfront rather than on performance. The artifact here is the post itself.

Influencer example post (Source: Dave Gerhardt). RevenueHero buys the voice and the audience, not a tracked conversion. The post reads as the creator's own argument, with the sponsorship disclosed at the end.
Program typeWho refersWhy they say yesWhere it worksIn practiceBest for
User referralsYour existing usersPersonal reward, plus looking useful to a peerBottom of funnel, high conversionTypeform: 15% monthly commission, up to $500 per referralEstablished user bases (+1,000 MAUs); freemium and free-trial models
Affiliate referralsCreators, bloggers, review sites, integratorsIt is how they make a livingTop of funnel, scales past your user baseFellow.app: one-off reward plus commission, up to $10,000 per customerAny size, but strongest with freemium or free trial and products with real search volume
Influencer referralsCategory-famous operators with large followingsPaid upfront, plus audience fitAwareness, rarely direct conversiontl;dv: impression-based, up to $700 per postSubstantial marketing budgets; consumerized, horizontal products
How the three B2B referral program types compare.
Where each program type lands in the funnel, with who refers and why they say yes.
04

Key considerations of referral programs

Before choosing a program, it's worth knowing how you'd measure it.

KPIs differ meaningfully by program type: a user referral program lives or dies by activation and sharing rate, while an affiliate program is judged on click-through rate and earnings-per-click. Whichever you pick, the underlying economics still have to work: CAC, LTV, and payback period need to hold up against your company's overall growth strategy. Ultimately, the KPI that matters most is New Revenue Growth from referrals per month, since that's what lets you compare this channel against everything else in your marketing mix.

Selecting and sequencing the right referral program

Selecting the optimal referral program depends on various factors, such as a company's user base size, business model, and strategic growth goals, with each program offering unique advantages for scaling and market penetration.

The “best for” column in the comparison table above summarizes which model each program suits.

Which program you start with depends on whether you already have an active user base to draw on. If you do, start with user referrals. They convert better than anything else in this Atlas, because the referrer already trusts you and knows who to send, and they compound as your user base grows. If you do not, they have nothing to run on. Below roughly 1,000 monthly active users, a user referral program will not produce enough volume to read, and affiliates are the better first move, because you are recruiting people outside your product rather than inside it. covers that path.

Synergies between programs

User referral programs can effectively leverage the organic reach of existing users while expanding market presence through affiliates, optimizing both engagement and reach (Example: Fellow).

Pairing user referrals with influencer campaigns can significantly boost brand visibility and trust, using influencers' credibility alongside existing users' personal endorsements (Example: tldv).

Affiliate and influencer partner acquisition through a highly visible in-product user referral program can be especially cost-efficiently accelerated.

Partners that happen to be product users can be acquired and activated through an in-product user referral program. They can then be uplifted to a suitable partner program with oftentimes more attractive incentives and access to in-depth analytics.

The order these need to happen in

Once you have decided a user referral program is right for you, five things have to happen in order. These are not parallel workstreams. Each one is wasted effort if the one above it is not already in place, which is why teams that start with incentive design usually end up rebuilding. Chapters 03 to 07 follow this order.

  1. A product worth referring. If your users are not already recommending you without being paid, no incentive will create that. This is the only step you cannot buy your way past. The program has to align with the product and resonate with potential referrers. Covered in .
  2. Discoverability. A program nobody can find cannot be tested, tuned or judged. Placement changes activation more than reward size does. Promote it prominently, including a dedicated landing page. Covered in .
  3. Incentive design. Only worth optimizing once people are reliably finding the program. Incentives should be attractive and relevant to the audience, reflect the product's value, and be two-sided, with a benefit for both referrer and referee. Covered in .
  4. Launch and GTM. Referral programs do not announce themselves, and one-off campaigns do not work. Give referrers supportive assets like a media kit and examples, remove barriers to sharing, and keep communication regular enough to nurture and motivate them. Covered in .
  5. Scale, tax and compliance. The work that decides whether this survives ten times the volume, including tax, legal and KYC compliance when paying your referrers. Covered in .
05

Closing thoughts

B2B referral partner programs can be engines of scalable, cost-efficient growth, expanding your top-of-the-funnel. When these programs join forces with user referrals, which target existing users to grow the bottom-of-the-funnel virality, the result is a compounding, amplified viral flywheel.

Having the right strategy, incentives, GTM approach, and tooling to set up custom journeys that resonate with your unique value proposition and needs is key. As most folks in tech know, “Ideas are cheap, execution is what matters.” We hope this article is a good step forward in choosing the right referral programs for your company. 

Choosing the right referral category is one thing. The harder question is why anyone bothers to refer you at all. Next: why trust, not efficiency, is becoming the real engine behind growth.

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Next · Ch 02 · Foundations
Growth is broken. Trust is the fix.
Elena Verna
Elena Verna
Lovable · 9 min read

The Cello Referral Atlas. Published by Cello (Powerplay GmbH).

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