Top B Corp Marketing Agencies in 2026 | Verified Scores

TL;DR

B Corp certification for marketing agencies isn’t a vanity badge, as the Havas decertification proved in 2024. This guide ranks the top B Corp marketing agencies by verified B Impact Scores, specialization, and honest tradeoffs. If you need an agency that commercializes sustainability and connects purpose to revenue, Grounded World (B Impact Score: 116) leads the list. For enterprise-scale sustainability strategy, Futerra and BBMG stand out. For performance marketing from a values-aligned partner, Mad Fish Digital and Seer Interactive are strong picks.

Key Takeaways

• B Corp certification measures how an agency operates—not necessarily what services it specializes in.

• Agencies with B Impact Scores above 100 significantly exceed the minimum certification threshold.

• The new B Lab V2.1 standards introduce mandatory performance requirements across every impact category.

• Sustainability marketing specialists are different from general B Corp digital agencies.

• Always verify certification status directly through B Lab before signing a contract.

The Verdict: Top B Corp Marketing Agencies in 2026

The best B Corp marketing agencies in 2026 are defined by their specialization and adherence to the new V2.1 B Lab Standards. BBMG (122.0) and Grounded World (116) lead for sustainability strategy and behavior change. For enterprise digital transformation, Dept is the global leader, while Seer Interactive and Mad Fish Digital excel in data-driven SEO. As of 2026, B Corp certification has moved away from a flexible 80-point score to mandatory performance across 7 core impact topics, including Climate Action and Fair Work.

In October 2024, four agencies owned by French advertising giant Havas were stripped of their B Corp certification. The reason: Havas continued working with Shell despite mounting pressure from the Clean Creatives coalition and 27 fellow B Corp agencies who filed a formal complaint with B Lab. As one industry commentator put it, the decision “sends out a very clear message, and it draws a line in the sand for all agencies.”

That story matters because it proves B Corp status has real consequences. It can be taken away. And for brands hiring a marketing agency in 2026, it means the agencies that still hold certification, or earn it under B Lab’s toughest-ever standards, deserve serious attention.

There are roughly 9,576 certified B Corporations across 102 countries). The number that are marketing agencies? Much smaller. Finding the right one requires understanding a distinction most listicles miss entirely: there’s a difference between an agency that is a B Corp and an agency that specializes in marketing for purpose-driven brands. Some do both. Most don’t.

This guide covers both types, includes verified B Impact Scores where available (a first for this kind of roundup), and gives you the honest tradeoffs that matter when you’re signing a contract.

At-a-Glance Comparison Table

Two Types of “B Corp Marketing Agency” (and Why It Matters)

Before the profiles, a critical distinction. When people search for top B Corp marketing agencies, they usually want one of two things:

Type 1: An agency that holds B Corp certification. These agencies have passed the B Impact Assessment, committed to stakeholder governance, and pay annual certification fees. But their client work might be generalist digital marketing, paid media, or web design. The B Corp status reflects how they run their business, not necessarily what they do for yours.

Type 2: An agency that specializes in sustainability and purpose-driven marketing. These agencies understand how to communicate sustainability credibly, avoid greenwashing, and connect purpose to commercial outcomes. Some hold B Corp certification themselves. Others don’t.

The sweet spot is an agency that sits at the intersection: B Corp-certified and purpose-built for sustainability marketing. That’s a much shorter list. Keep this framework in mind as you read each profile below.

How We Ranked These B Corp Marketing Agencies

Transparency is increasingly important for both Google and readers. Every agency in this guide was evaluated using publicly verifiable information rather than sponsored placements.

Ranking Factors

Agencies were not ranked solely on B Impact Score. Practical marketing capability, specialization, and suitability for different business types were weighted more heavily than certification alone.

How to Evaluate B Corp Marketing Agencies

Before committing budget, ask these questions of any agency on your shortlist:

1. Are they actually B Corp certified right now? Verify on B Lab’s official directory. Certification lapses. Agencies get decertified. Don’t take their word for it.

2. What’s their B Impact Score? The minimum to certify is 80 (the median for ordinary businesses is 50.9). An agency scoring 100+ has gone well beyond the threshold. Scores are public on B Lab’s site, yet almost no one compares them.

3. Do they have fossil fuel or harmful industry client policies? The Havas case proved this matters. Ask whether they’ve signed the Clean Creatives pledge. If they hesitate, that tells you something.

4. Do they connect sustainability to commercial outcomes? Many agencies produce beautiful purpose statements that go nowhere. The best ones tie sustainability work to revenue, purchase intent, and behavior change. Ask for proof.

5. Are they compliant with V2.1 Mandatory Requirements? B Lab officially transitioned to Version 2.1 Standards in 2025/2026. The former "flexible" points system is now a "Foundation + Impact Topics" model. Agencies can no longer "hide" poor environmental scores behind high community scores. Every agency must now meet fixed baselines in:

• Climate Action: Mandatory Carbon Action Plans and 1.5°C alignment.

• Fair Work: Minimum requirements for living wages and worker benefits.

• JEDI: Justice, Equity, Diversity, and Inclusion metrics are now non-negotiable.

• Third-Party Verification: Self-reporting is no longer accepted; all data must be audited.

Which B Corp Marketing Agency Is Right for You?

The Top B Corp Marketing Agencies

1. Grounded World

Best for: Brands, retailers, startups, and nonprofits that need to commercialize sustainability and turn purpose into measurable business outcomes.

B Impact Score: 116

Key credentials: B Corp certified, Ethical Agency Alliance member, 1% for the Planet, Science Based Targets, Top 100 Global Social Impact Company. Women-led, multi-award-winning.

Grounded World is a boutique marketing agency built from the ground up to solve a specific problem: the gap between what consumers say they care about (sustainability) and what they actually buy. This intention-action gap is the central challenge for any brand trying to make sustainability profitable, and it’s where Grounded World focuses its energy.

What sets it apart:

• Proprietary frameworks (BPP, 5Rs, Brand Activation for Good, Flywheel of Impact) designed to bridge purpose and profit

• AI-assisted 5C landscape assessments covering Company, Culture, Category, Competitor, and Consumer dimensions, powered by their Gaia AI tool

• Four-phase service model (Discover, Articulate, Activate, Accelerate) that moves from diagnosis through strategy to execution and growth

• Clients include Grove Collaborative, Fresh Air Fund, Network of Executive Women, UNMAS, Plan USA, and Mary’s Center, among others (see their full portfolio)

Tradeoffs:

• Boutique agency, so capacity is limited compared to a 4,000-person firm like Dept

• No public pricing; projects are custom-scoped

• Specialist in sustainability and social impact marketing, not generalist performance marketing (paid search, programmatic, etc.)

Why it tops this list: Grounded World sits at the intersection of the two types described above. It’s both B Corp-certified (with a score of 116, well above the 80-point threshold) and purpose-built for sustainability marketing. Most B Corp agencies are generalist digital shops that happen to run ethical operations. Grounded World’s entire service model, from its brand purpose activation work to its social impact campaigns, is designed to make sustainability commercially viable.

If you’re exploring whether your brand’s sustainability story is landing, their complimentary 5C landscape assessment is a low-commitment place to start.

2. BBMG

Best for: Mission-driven organizations needing brand strategy, identity design, and “regenerative branding.”

B Impact Score: 122.0 (one of the highest among marketing agencies globally)

BBMG has been a B Corp since its founding in 2007, making it one of the earliest agencies in the movement. Based in Brooklyn with a small team (1 to 9 employees), they focus on brand consulting for social impact and sustainability. Recent clients include Burton Snowboards, Estée Lauder, Just Salad, Macy’s, The North Face, Target, ASPCA, Ford Foundation, and Planned Parenthood.

Key strengths:

• Exceptionally high B Impact Score signals deep operational commitment

• Two decades of experience in purpose-driven brand building

• Strong portfolio spanning consumer brands, retailers, and major nonprofits

Tradeoffs:

• Very small team, which limits bandwidth for large-scale engagements

• Brand consultancy, not a full-service execution agency (don’t expect them to run your paid media)

• Premium positioning; likely not the right fit for early-stage startups with thin budgets

3. Futerra

Best for: Global enterprises and multinational brands needing sustainability strategy, creative campaigns, and behavior change expertise at scale.

B Impact Score: 102.3

Futerra has pursued one mission since 2001: “making sustainable development so desirable it becomes normal.” They’re a founding B Corp, a Clean Creatives signatory, and became the first “Climate Solutions Provider” in the professional services industry by deriving over 90% of revenue from projects aligned with 1.5°C ambitions. Their team spans London, Stockholm, New York, San Francisco, and Mexico City.

Key strengths:

• Clients include WWF, Google, Earthjustice, Estée Lauder, Lego, Netflix, and Sierra Club

• Majority women-owned and women-led

• Pioneers of Client Disclosure Reports (publicly sharing who they work for and why)

• Deep behavior change methodology

Tradeoffs:

• Premium pricing. Not accessible for smaller brands or nonprofits with constrained budgets

• Primarily strategy and creative; not a performance marketing or digital execution shop

• Glassdoor reviews mention access to “amazing opportunities and credibility” but flag “quite an intense workload”

4. Scream Agency

Best for: Purpose-driven brands needing full-service creative work with strong B Corp credentials.

B Impact Score: 103.8

Scream Agency doesn’t get mentioned in most B Corp agency roundups, which is an oversight given their above-100 B Impact Score. They offer full-service creative, and their certification score puts them in a small club of agencies that have gone meaningfully beyond the 80-point minimum.

Key strengths:

• Verified B Impact Score above 100

• Full-service creative capabilities

Tradeoffs:

• Lower profile than agencies like Futerra or BBMG

• Less publicly available information about client work and case studies

• Not a sustainability marketing specialist per se

5. Mad Fish Digital

Best for: Brands wanting full-service digital marketing (SEO, paid, content, brand) from a B Corp-certified agency.

B Impact Score: Not publicly listed

Mad Fish Digital, based in Portland, Oregon, became B Corp-certified in 2018 after what they describe as a deep analysis of their business practices. They’re a true generalist digital agency that happens to hold B Corp values. Services span SEO, paid advertising, content marketing, and brand design.

Practitioners on forums and review sites highlight Mad Fish’s ability to combine “purpose, performance, and perspective” in digital marketing, a rare combination in an industry where most agencies optimize for clicks without caring much about the brand behind them.

Key strengths:

• Broad digital marketing capabilities under one roof

• Established B Corp certification (since 2018)

• Portland location reflects a culture alignment with progressive, sustainability-minded brands

Tradeoffs:

• Not a sustainability marketing specialist; their expertise is digital performance, not purpose-driven brand strategy

• B Impact Score not publicly available, making it harder to benchmark commitment

• Generalist positioning means less depth in sustainability communication

6. Seer Interactive

Best for: Data-driven brands wanting large-scale SEO and SEM from a B Corp partner.

B Impact Score: Not publicly listed

Seer Interactive, based in Philadelphia, is one of the larger agencies on this list and one of the better-known names in the SEO and SEM world. Their B Corp certification adds a values layer to what is fundamentally a data and analytics operation. If you need sophisticated search marketing and want your agency fees going to a company that treats its people and community well, Seer fits.

Key strengths:

• Deep expertise in SEO, SEM, and marketing analytics

• Larger team (200+) means capacity for enterprise-level campaigns

• Strong reputation in the digital marketing community

Tradeoffs:

• Not purpose-specific in client selection; they’re a digital performance agency with B Corp credentials

• No specialization in sustainability messaging or sustainability communication

• B Corp status reflects operational values, not service offering

7. Dept

Best for: Enterprise brands needing end-to-end digital transformation, creative, and technology from a B Corp-certified partner.

B Impact Score: Not publicly listed

Dept is the largest agency on this list by far, with over 4,000 specialists globally and headquarters in Amsterdam. Clients include Google, WHOOP, and JBL. Reviews frequently highlight Dept’s ability to consolidate strategy, design, and development under one roof, which matters for large organizations that don’t want to manage five agency relationships.

Key strengths:

• Massive scale and global presence

• Full-stack capabilities: strategy, design, development, marketing

• B Corp certification at this size is genuinely difficult to achieve and maintain

Tradeoffs:

• Not boutique. If you want a partner who knows your CEO’s name, this isn’t that agency

• Digital transformation and technology focus, not sustainability-first

• B Corp status may feel less personal at this scale

8. Two Octobers

Best for: Small-to-mid-size brands wanting a B Corp digital marketing partner with strong community impact credentials.

B Impact Score: Not publicly listed

Two Octobers, based in Denver, has been a registered B Corp since 2020. They focus on marketing analytics, SEO, content, and paid media. What distinguishes them from other small digital agencies is their investment in community: they built a Registered Apprenticeship in digital marketing specifically to create pathways to well-paying careers for people who might not have traditional agency backgrounds.

Key strengths:

• Community-oriented business model

• Solid digital marketing fundamentals (analytics, SEO, paid)

• Apprenticeship program signals genuine commitment to B Corp values beyond certification

Tradeoffs:

• Smaller agency with limited capacity

• No deep sustainability domain expertise

• Better suited for brands that need competent digital marketing from a values-aligned partner, not brands that need sustainability strategy

9. Forge & Spark Media

Best for: Purpose-led brands needing content marketing and social media management from a women-led, values-aligned agency.

B Impact Score: Not publicly listed

Forge & Spark Media is a Canadian, women-led B Corp agency focused on content marketing and social media. They offer special incentives for B Corp clients and participate in Pledge 1%, donating a portion of revenue to community causes.

Key strengths:

• Clear purpose alignment with B Corp clients (including pricing incentives)

• Focused expertise in content and social media

• Women-led with transparent values

Tradeoffs:

• Narrow service offering (content and social only, not full-service)

• Canada-based, which may affect time zones and market knowledge for US or European brands

• Smaller agency with correspondingly limited bandwidth

10. Richardson Media Group

Best for: US-based small brands wanting paid media and SEO from a B Corp agency with a rising impact score.

B Impact Score: 101.8 (up from initial certification, recertified 2024)

Richardson Media Group, based in Portsmouth, New Hampshire, is a smaller agency specializing in SEO and PPC management. They were first certified in 2022 and recertified in 2024 with an improved B Impact Score of 101.8, which signals genuine commitment to continuous improvement rather than a one-and-done certification.

Key strengths:

• Improving B Impact Score demonstrates growing commitment

• Recent recertification means current compliance with B Lab standards

• Focused, specialist offering in paid media and SEO

Tradeoffs:

• Small team with limited capacity

• Not a sustainability marketing specialist

• Regional focus may not suit global brands

The Havas Warning: What Happens When B Corp Agencies Don’t Walk the Talk

The Havas decertification deserves its own section because it changed the conversation about B Corp credibility in the agency world.

In October 2023, Clean Creatives and 27 B Corp-certified agencies submitted a formal complaint to B Lab about Havas’s continued work for Shell. The investigation that followed led to four Havas agencies losing their B Corp status in 2024. For Havas, B Corp status had been a talent magnet and a “point of connection” with purpose-driven brands. Losing it was a public repudiation.

The implications for anyone hiring a marketing agency are straightforward:

Ask about client policies. Does the agency work with fossil fuel companies? Tobacco? Weapons manufacturers? If they won’t tell you, that’s an answer in itself.

Check for Clean Creatives signatory status. Agencies that have signed the pledge have made a public commitment to refuse fossil fuel clients. It’s not just virtue signaling; the Havas case proved these commitments get enforced.

Understand that B Corp certification is a living commitment. It requires recertification (every three years under current rules, moving to five under the new standards). An agency that was certified in 2019 but hasn’t recertified may have lapsed. Verify directly on B Lab’s directory.

The Havas story also underscores why the B Impact Score matters. An agency scoring barely above 80 has less margin than one scoring 110 or 120. Higher scores suggest the certification is woven into operations, not bolted on.

B Corp Standards Are Getting Tougher: What That Means for Your Agency Choice

In April 2025, B Lab launched the most significant update to its standards in history. Companies applying from 2026 will certify against Version 2.1, which fundamentally changes what certification means.

What changed:

• The old system revolved around scoring at least 80 points on the B Impact Assessment, with flexibility about where those points came from. That’s gone.

• The new standards introduce mandatory “Year 0” requirements that every company must meet across all critical areas, with no picking and choosing.

• The certification cycle extends to five years, with escalating expectations at Year 0, Year 3, and Year 5.

• Third-party auditing and continuous improvement replace the old self-assessment model.

What this means for hiring an agency:

Agencies that earn certification under V2.1 have cleared a higher bar. They’ve met mandatory baselines in worker treatment, environmental practices, governance, and community impact. If you’re evaluating two agencies and one holds a V2.1 certification while the other is still on the old system, the newer certification carries more weight.

This also means the pool of B Corp marketing agencies may temporarily shrink as some fail to meet the new requirements. The ones that remain, and the ones that certify fresh, will be more credible than ever.

The "Clean Creatives" Filter: A 2026 Necessity

In the wake of the Havas decertification, B Corp status is often cross-referenced with the Clean Creatives Pledge. This is a public commitment by agencies to refuse contracts from fossil fuel companies.

Timeline of Major B Corp Changes

What About Pricing?

No ranking article on top B Corp marketing agencies addresses cost, which is absurd given that budgets drive agency selection as much as values do.

Here’s what we can say:

B Corp certification fees for agencies range from $2,000 to $50,000 annually, depending on revenue. These costs get passed through in overhead, but they’re modest relative to total agency costs.

Agency retainer ranges vary enormously by type. According to Gartner’s 2025 CMO survey, companies allocated 7.7% of total revenue to marketing, yet 59% of CMOs said their budgets were insufficient. This squeeze means every agency dollar needs to work harder.

As a rough guide:

• Boutique B Corp agencies (Grounded World, BBMG, Forge & Spark): custom-scoped projects. Expect to have a conversation about budget rather than picking from a menu. The upside is flexibility without big-retainer overhead.

• Mid-size B Corp agencies (Mad Fish Digital, Two Octobers, Richardson Media Group): typically monthly retainers for ongoing digital services. Range varies by scope.

• Large B Corp agencies (Dept, Seer Interactive): enterprise pricing with minimum engagement thresholds. If you need to ask about pricing, you may be below their typical client size.

• Strategy-heavy specialists (Futerra): premium pricing reflective of senior talent and global brand experience.

The best approach is to request proposals from two to three agencies of different sizes and compare not just cost, but what commercial outcomes they tie to their work.

Pros and Cons of Hiring a B Corp Marketing Agency

Advantages

• Independent third-party verification

• Strong governance standards

• Better employee retention

• Increased transparency

• Lower greenwashing risk

• Values alignment with ESG-focused brands

Potential Drawbacks

• Premium pricing

• Smaller agency pool

• Some agencies focus more on ethics than marketing performance

• Certification alone doesn't guarantee expertise

Typical Services Offered by B Corp Marketing Agencies

Not every B Corp agency provides the same services. Some focus exclusively on sustainability strategy, while others operate as traditional digital marketing firms.

Checklist: 3 Questions to Ask Your Agency in 2026

If you are vetting a B Corp agency, ask these specific questions to verify they are "walking the talk":

1. "Have you completed your Year 0 Foundation Requirements under V2.1?" (If they mention an '80-point score' as their only metric, they are likely on an outdated cycle).

2. "Is your Social and Environmental Performance Report approved by your Highest Governing Body (Board)?" (Under the 2026 standards, ESG must be strategic, not just operational).

3. "Can you provide a verified Scope 1 and 2 emissions report?" (This is now a mandatory disclosure for agencies of a certain size under the Climate Action topic).

B Corp Marketing Agency vs Traditional Marketing Agency

Frequently Asked Questions

What is a B Corp marketing agency?

A B Corp marketing agency is a marketing firm that has earned B Corporation certification from B Lab. This means the agency has been assessed across five impact areas (governance, workers, community, environment, and customers), scored at least 80 on the B Impact Assessment, integrated stakeholder commitments into its governing documents, and pays an annual certification fee. Certification must be renewed every three years (moving to five years under the 2026 standards). It’s important to note that a B Corp marketing agency may serve any type of client; the certification reflects how the agency operates, not who it works for.

How is a B Corp marketing agency different from a sustainability marketing agency?

A B Corp marketing agency has verified ethical and environmental business practices but may offer generalist services like SEO or paid media. A sustainability marketing agency specializes in helping brands communicate and commercialize their sustainability efforts. Some agencies are both. When hiring, clarify whether you need an agency with certified values, specialized sustainability expertise, or ideally both.

How do I verify if an agency is actually B Corp certified?

Search the B Lab directory directly. You can find each agency’s certification status, B Impact Score, and the date of their most recent certification. Don’t rely on an agency’s website alone, since certification can lapse or be revoked (as happened with Havas in 2024).

What is a good B Impact Score for a marketing agency?

The minimum to certify is 80. The median score for ordinary businesses is 50.9. Among the agencies in this guide, scores range from about 96 to 122. Anything above 100 indicates an agency that has gone well beyond the minimum threshold. BBMG’s 122.0 and Grounded World’s 116 are among the highest in the marketing agency category.

How much do B Corp marketing agencies charge?

There’s no standard pricing. Boutique agencies typically custom-scope projects, while mid-size digital agencies often work on monthly retainers. Large agencies like Dept or Seer Interactive operate at enterprise scale with corresponding budgets. The B Corp certification fee itself ranges from $2,000 to $50,000 annually based on revenue, which is a small fraction of overall agency costs.

What are the new 2026 B Corp standards?

B Lab launched Version 2.1 of its standards in April 2025. The old flexible scoring system is being replaced by mandatory baseline requirements in every impact area. Certification cycles extend to five years with escalating expectations. Agencies certified under V2.1 have met a higher bar than those certified under previous versions.

Should I only hire a B Corp-certified marketing agency?

Not necessarily. B Corp certification tells you the agency runs its business ethically, but it doesn’t guarantee expertise in brand purpose or sustainability communication. If your primary need is a marketing partner who understands how to make sustainability commercially viable, prioritize agencies with demonstrated sustainability marketing expertise, whether or not they hold B Corp status. The ideal is both.

What is the Clean Creatives pledge and why does it matter?

Clean Creatives is a campaign asking advertising and PR agencies to refuse contracts with fossil fuel companies. Agencies that sign the pledge commit publicly, which adds accountability. The Havas decertification showed that fossil fuel work can cost an agency its B Corp status. If your brand is purpose-driven, working with a Clean Creatives signatory reduces reputational risk.

Choosing the Right B Corp Marketing Agency

The pool of top B Corp marketing agencies is growing, but it’s still small enough that the right choice depends heavily on what you actually need.

If you need an agency that will help you commercialize sustainability and close the intention-action gap, prioritize specialists who understand both purpose and profit. If you need SEO or paid media and simply want your budget going to an ethical company, a generalist B Corp digital agency will serve you well.

Either way, verify certification status, compare B Impact Scores, ask about fossil fuel policies, and demand evidence that the agency’s work produces commercial outcomes, not just pretty presentations.

The bar for B Corp agencies is higher than it’s ever been. The agencies that clear it deserve your consideration. Start a conversation with Grounded World if your brand is ready to turn sustainability into its strongest growth driver.