Best Affiliate Marketing Companies for B2B in 2025

Choosing the right affiliate marketing agency for B2B isn’t easy. Unlike consumer brands, B2B companies deal with longer buying cycles, smaller target audiences, and higher-value conversions, so not every affiliate agency fits the bill.

In 2025, the best agencies in this space understand how to blend performance marketing with partnership strategy, building programmes that drive qualified leads, not just clicks. They know how to work with content publishers, SaaS review sites, industry newsletters, and partner communities that influence real business decisions.

This guide highlights some of the most trusted affiliate marketing agencies for B2B, focusing on those with a proven track record in SaaS, technology, and enterprise markets. We’ve ranked Lever Digital first, given its strong performance helping SaaS platforms like Uplisting unlock $700,000 in revenue through affiliate marketing alone.

Whether you’re looking to launch your first affiliate programme or scale an existing one, these agencies can help you grow pipeline, build lasting partner relationships, and turn your affiliate channel into a consistent revenue stream.

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Top Agencies

1. Lever Digital (UK)

Why we’ve placed them at #1

• Lever Digital is a UK-based B2B digital marketing agency, with strong experience in B2B / SaaS digital marketing space. For example, their work with Uplisting where “Lever helped unlock $700,000 in revenue through affiliate marketing alone.”
• Their broader capability includes B2B paid social, SEO and conversion optimisation for tech/SaaS companies listing affiliate marketing as a service area alongside broader PPC strategy.
• Being based in the UK means good proximity / time zone alignment for UK/European B2B businesses and their experience in the US market is great for companies with global expansion plans.

What they offer

• Full-service affiliate programme build: software selection, commission structure design, affiliate recruitment, tracking & measurement.
• Integration into wider B2B growth strategy (media, conversion optimisation) which is important given longer B2B sales cycles.
• A strong case study (Uplisting) showing real results from their affiliate marketing service working for a SaaS company.

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2. Gen3 Marketing – Full-Funnel B2B Performance Agency with Affiliate Capabilities

Gen3 Marketing offers affiliate, influencer, and paid media services within a broader performance marketing framework. It’s a great choice if you want an agency that can manage affiliate programmes alongside SEO, PR, and paid campaigns.

Why they’re a good fit
They have extensive global experience and specialise in tailoring affiliate strategies for high-consideration B2B markets, including SaaS and technology.

Considerations
Ensure their affiliate model is geared towards lead generation and pipeline growth rather than e-commerce sales. Clarify how they segment affiliate types (content, partner, influencer) and attribute value across longer B2B sales cycles.

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3. Growann – Affiliate Management for B2B SaaS Companies

Growann specialises in affiliate marketing for B2B SaaS and tech brands. Their service covers the full lifecycle — from programme setup and partner recruitment to optimisation and performance tracking.

Why they’re a good fit
They focus on lead-based and recurring-revenue models suited to SaaS, ensuring affiliates are aligned with quality conversions rather than volume.

Considerations
Check that their approach to affiliate recruitment matches your ICP and that their tracking setup accommodates free trials or multi-step lead journeys typical of B2B sales cycles.

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4. Acceleration Partners – Global Affiliate and Partnership Marketing Agency

Acceleration Partners is one of the world’s best-known affiliate and partnership agencies, with a strong international presence and an award-winning track record across multiple sectors.

Why they’re a good fit
They combine scale with strategy, offering comprehensive programme management, from affiliate recruitment and compliance to partner development and reporting.

Considerations
While they’re highly experienced, confirm they can adapt their approach for B2B and SaaS markets where attribution, deal size, and sales timelines differ significantly from consumer campaigns.

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What you should know before hiring an affiliate-marketing agency for B2B

Understand your sales cycle and conversion path

B2B typically means longer cycles, multiple stakeholders, demos/trials → qualified opportunity → close. Affiliate programmes need to adapt to this (lead → MQL → SQL → customer).

Set clear KPIs: pipeline value, cost-per-acquisition, lifetime value

Focus on metrics beyond “clicks” or “installs” — think deals closed, new customers, ARR added, revenue from affiliates.

Ensure you have the right tech & tracking in place

Affiliate tracking might need custom integration (CRM, attribution, cookies, incentive tracking, affiliate dashboards). As the Lever Digital article shows, they emphasise steps like software research, setup, tracking, dashboard.

Choose commissions & incentives that reflect value

In B2B, value per customer is higher, so typical affiliate commissions (e.g., 5–10% of first year revenue) may make sense; but must align with your margins and lifetime value.

Select the right affiliates/partners

Content affiliates, comparison sites, influencers in your vertical, customer referrals, partner ecosystems. Quality matters more than quantity in B2B.

Integrate affiliate programme with broader marketing & partner ecosystem

Affiliate should not sit in a silo. It should tie into content marketing, SEO, partner channel, brand marketing so you get synergies.

Manage compliance, tracking, attribution, and partner relationships

Ensure T&Cs, affiliate rules (e.g., brand bidding, PPC by affiliates), fraud monitoring, reporting. Lever Digital highlights building “Terms & Conditions” of affiliate programme.

Evaluate agencies on B2B experience

Because B2B is different to B2C/retail affiliate: tougher sales, smaller volumes, higher value, more touchpoints. Ask for case studies, testimonials in your space.

How an agency might help you (and what to ask)

• Programme design: They’ll help you pick software, define commission structure, cookie durations, affiliate types, landing pages.
• Recruitment & onboarding of affiliates: Identifying fit affiliates in your niche, reaching out, onboarding, providing creatives and support.
• Tracking, measurement & optimisation: Setting up dashboards, tracking affiliate-driven leads/customers, continuously optimising partner performance.
• Integration with your GTM: They can help ensure affiliate channel is aligned with your lead-gen, content, paid media, SEO and partner channels.
• Ongoing management: Managing affiliate relationships, ensuring compliance, refreshing creatives/offers, scaling high-performing affiliates.

When evaluating an agency, ask:

• What B2B affiliate programmes have you run (vertical, region, size)?
• What results did you achieve (pipeline, customer acquisition, revenue)?
• How do you handle attribution in longer B2B sales cycles?
• What software/platforms do you recommend and why?
• How do you recruit and activate high-quality affiliates (not just quantity)?
• What reporting and optimisation processes do you have?
• How do you integrate with our tech stack (CRM, analytics, attribution)?
• What are your pricing/model—they may charge setup + % of commissions + retainer?

Recap

Affiliate marketing is now a meaningful channel for B2B, not just consumer. With the right agency partner, you can tap into performance-based growth, amplify your reach via affiliates/partners and align incentives so you only pay when value is delivered. In choosing an agency, prioritise B2B experience, affiliate programme design, quality of affiliates, integration with your GTM and clear tracking/attribution.

If you’re ready to explore or build your affiliate marketing programme thoroughly, you might like to check out our affiliate marketing services page at Lever Digital for more about how we help SaaS & tech brands scale through performance partnerships.

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