LONDON, May 12, 2026 — London-based fintech Adfin has closed an $18 million Series A funding round led by Index Ventures, bringing the company's total capital raised to more than $30 million in fewer than two years of operations. The round, which also attracted backing from Visionaries Club alongside angel investors including former King COO Stéphane Kurgan and Miro founder Andrey Khusid, is directed at a stubbornly persistent problem in British commerce: nearly 63% of invoices issued by small and medium-sized enterprises in the United Kingdom are paid late. Founded in 2024 by payments veterans Tom Pope and Ciprian Diaconasu, Adfin has built an automated finance platform that combines proprietary payment infrastructure with intelligent workflow automation to accelerate business-to-business collections. The startup already serves more than 1,500 businesses across the UK, spanning accounting firms, legal practices, care providers, and trades businesses. This analysis by Business20Channel.tv's fintech desk examines the capital allocation logic behind the round, how Adfin's late-payment metrics compare to the wider market, and what the raise means for the competitive landscape in SME payments automation.

Executive Summary

• Adfin raised $18 million in Series A funding on 12 May 2026, led by Index Ventures, with total funding now exceeding $30 million.
• The company targets the UK's late-payment crisis, where 63% of SME invoices are paid beyond their due date; Adfin customers report only 9% of invoices paid late.
• Co-founders Tom Pope (ex-Worldpay, ex-Tink) and Ciprian Diaconasu (founding engineer at Mambu) bring deep payments and banking infrastructure expertise.
• Index Ventures partner Julia André confirmed the firm has invested at pre-seed, seed, and now Series A — a rare triple commitment from a single venture firm.
• Fresh capital will fund expansion beyond invoice collection into end-to-end cashflow management, alongside international market entry and hiring across engineering and sales.

Key Developments

The Funding Round in Detail

The $18 million Series A positions Adfin among the more substantially capitalised early-stage fintechs focused specifically on SME money movement in the UK. Index Ventures, which led the round, has a well-documented track record in fintech having previously backed Revolut, Plaid, and other prominent financial technology companies. The participation of Visionaries Club, a Berlin-based venture capital firm, adds a Continental European dimension to the investor base. The angel participation from Stéphane Kurgan, who served as COO of mobile gaming giant King, and Andrey Khusid, the founder of visual collaboration platform Miro, signals confidence from operators with experience scaling consumer and enterprise technology businesses, respectively. With total funding now above $30 million accumulated in under 24 months since the 2024 founding, Adfin has moved quickly through the early fundraising stages — faster than many fintech peers that typically spend 18 to 24 months between seed and Series A.

Founder Credentials and Platform Vision

Tom Pope spent more than a decade building payment systems at Worldpay and at Tink, the open banking platform that Visa acquired for $2.2 billion. Co-founder Ciprian Diaconasu was the founding engineer at Mambu, the cloud banking platform valued at $5.3 billion that powers financial institutions including N26 and Tide. This pairing of payments infrastructure expertise and core banking engineering is deliberate. Pope described Adfin's ambition in explicit terms: "Adfin is building the agentic finance platform for money movement: automating the workflows finance teams use to get paid, manage their money, and, in time, much more. And we're doing it the way our customers keep telling us they want: safe, auditable, trackable, with humans firmly in control." — Tom Pope, Co-founder, Adfin, TechFundingNews, May 2026. Pope went further, explaining the strategic rationale for owning the full stack: "By owning both the underlying financial infrastructure and the agentic workflows on top, we'll let finance teams deploy agents in a way nobody else can." — Tom Pope, Co-founder, Adfin, TechFundingNews, May 2026.

The Late-Payment Problem

The macroeconomic backdrop for this raise is significant. The UK's Federation of Small Businesses has long highlighted late payments as a systemic drag on SME viability. According to data cited by Adfin, approximately 63% of invoices issued by UK SMEs are paid late, a figure consistent with broader industry reporting from organisations such as Xero and the UK government's own Small Business Commissioner. Late payments constrain working capital, force reliance on expensive overdraft facilities, and in many cases contribute directly to business failures. Adfin's platform reports that its users see only 9% of invoices paid late — a 54 percentage-point improvement over the national average. That single metric is arguably the most compelling data point in the company's pitch to investors.

Market Context & Competitive Landscape

Adfin operates in a crowded segment of the fintech market. Established competitors include GoCardless, which has built a significant position in recurring payment collections and bank-to-bank payments across more than 30 countries, and Billtrust, the US-headquartered accounts receivable automation platform that was taken private by EQT in a $1.7 billion deal in 2022. Other players in adjacent spaces include Chaser, an accounts receivable automation tool that integrates with accounting software, and Flywire, which focuses on complex payment verticals such as education and healthcare. Broader invoice finance platforms like MarketFinance (formerly MarketInvoice) also compete for the attention of cash-strapped SMEs.

Source: Business20Channel.tv analysis based on publicly available company information and TechFundingNews reporting, May 2026. GoCardless and Billtrust data from respective company websites.

The key question for Adfin is whether owning both the payment infrastructure and the automation layer creates sufficient defensibility against incumbents. GoCardless, for instance, processes billions of pounds in transactions annually and has deep open banking integrations across Europe. Billtrust's enterprise-grade accounts receivable suite is embedded in the workflows of large corporates. Adfin's advantage, by its own account, is the ability to combine payment rails with what Pope calls "agentic workflows" — AI-driven processes that can determine the optimal follow-up actions for unpaid invoices without requiring manual intervention. The limitation, which must be stated honestly, is that 1,500 customers represents an early traction signal rather than market dominance. Whether the 9% late-payment figure holds as Adfin scales into new verticals and geographies remains unproven.

Industry Implications

Professional Services and Legal

Adfin's existing customer base already includes accounting firms and legal practices — two verticals where invoice management is both high-volume and operationally complex. In the UK legal sector, the Solicitors Regulation Authority imposes strict requirements around client money handling, which means any automated payments platform must meet exacting compliance and audit standards. Pope's emphasis on "safe, auditable, trackable" operations appears directed at exactly these regulatory sensitivities. For mid-tier law firms processing hundreds of invoices monthly, reducing the late-payment rate from 63% to 9% would have material implications for working capital management.

Healthcare and Social Care

The inclusion of care providers among Adfin's 1,500 customers is notable. The UK's social care sector operates on notoriously thin margins, and late payments from local authorities and NHS trusts are a well-documented problem. The Care Quality Commission has repeatedly flagged financial sustainability as a concern across the sector. Automated cashflow management tools that accelerate payment collection could meaningfully improve the financial resilience of small care operators. However, any fintech serving this sector must navigate the complexities of public sector procurement and payment cycles, which are often governed by rigid bureaucratic processes rather than commercial logic.

Trades and Construction

Trades businesses represent another core vertical for Adfin, and the late-payment problem is especially acute in construction. The UK government's Construction Playbook has sought to address payment practices in the sector, and the Prompt Payment Code encourages businesses to pay 95% of invoices within 60 days. Despite these initiatives, late payment remains endemic. Adfin's automated follow-up capabilities could prove particularly valuable for sole traders and small contractors who lack dedicated finance teams.

Business20Channel.tv Analysis

The Investor Logic: Why Index Ventures Tripled Down

Index Ventures' decision to lead at pre-seed, seed, and now Series A is a strong conviction signal. Julia André, partner at Index Ventures, was unequivocal: "Index backs founders who have the rare ability to obsess over a problem and build category-defining businesses. We see that same pattern in Tom and Ciprian. We backed them at pre-seed and seed and we're tripling down, because their results speak for themselves." — Julia André, Partner, Index Ventures, TechFundingNews, May 2026. In venture capital, a lead investor committing across three consecutive rounds is relatively uncommon and typically indicates that internal portfolio data — not just pitch decks — supports the investment thesis. Index's fintech portfolio includes Adyen, a company now valued at tens of billions of euros, which suggests the firm has a credible framework for evaluating payments infrastructure businesses.

The Agentic Finance Thesis

Our analysis at Business20Channel.tv identifies the most strategically significant aspect of Adfin's pitch as its positioning around "agentic finance." This term — referring to AI agents that can autonomously execute multi-step financial workflows — has gained traction across the fintech industry in 2025 and 2026 as large language models and task-specific AI systems have matured. What differentiates Adfin's claim from the broader hype around AI agents is the vertical integration: the company owns the payment rails, not just the software layer. This means its AI workflows can not only decide what action to take on an overdue invoice but can also execute that action directly — sending payment reminders, adjusting payment methods, or initiating collections — without relying on third-party payment providers. The risk, which we have covered in our fintech analysis series, is that owning infrastructure increases operational complexity and regulatory burden. Adfin must maintain compliance with FCA regulations, PSD2 requirements, and potentially Strong Customer Authentication rules, all while building and iterating on AI-driven automation. Building both the pipes and the intelligence simultaneously is capital-intensive, which partly explains the pace of fundraising.

Source: Adfin late-payment and customer data from TechFundingNews, May 2026. UK SME population figure from UK government statistics. Items marked * are estimates based on publicly available data and are clearly flagged.

A Note on Self-Reported Metrics

We must note that the 9% late-payment figure is self-reported by Adfin and has not been independently audited, as far as publicly available information indicates. While the metric is striking, prospective customers and investors should seek independent verification. Selection bias is also a consideration: businesses that proactively adopt a payments automation platform may already have stronger financial discipline than the broader SME population, which could partly explain the performance gap relative to the 63% UK average.

Why This Matters for Industry Stakeholders

For CFOs and finance directors at UK SMEs, Adfin's Series A represents another signal that the market for automated accounts receivable tools is maturing rapidly. The practical implication: businesses still managing invoice follow-ups manually via email and spreadsheet are increasingly operating at a competitive disadvantage. The 54 percentage-point gap between Adfin's reported late-payment rate and the UK average, even accounting for selection bias, suggests meaningful ROI potential for adopters. For competing fintechs such as GoCardless and Chaser, Adfin's fundraise will increase competitive pressure in the UK SME segment. GoCardless, which raised $312 million in Series G funding in 2022 according to Crunchbase data, has significantly more capital and market reach, but Adfin's integrated approach — combining payment infrastructure with AI-driven collections — targets a specific gap in the market. For policy-makers, the persistence of the 63% late-payment rate despite years of government initiatives including the Prompt Payment Code and the appointment of a Small Business Commissioner underscores the limits of voluntary and regulatory approaches. Technology-driven solutions like Adfin's may prove more effective at changing payment behaviour than compliance frameworks alone.

Forward Outlook

Adfin's stated roadmap includes three priorities: expanding beyond invoice collection into full end-to-end cashflow management, increasing headcount across engineering and sales, and preparing for international expansion beyond the UK. Each carries distinct execution risks. End-to-end cashflow management is a significantly broader product scope that pits Adfin against not only payments competitors but also treasury management platforms and enterprise resource planning providers. International expansion will require navigating different payment infrastructures, regulatory regimes, and banking relationships in each new market — a challenge that has slowed even well-capitalised fintechs. The $18 million in fresh capital provides runway, but building proprietary payment infrastructure across multiple jurisdictions is expensive. Julia André's stated confidence — "their results speak for themselves" — will face its most rigorous test in the next 12 to 18 months as Adfin attempts to scale from 1,500 UK customers to a multi-market operation. The open question is whether the "agentic finance" thesis, which sounds compelling in a pitch deck, translates into defensible competitive advantage at scale — or whether larger, better-capitalised incumbents will replicate the approach once the model is proven.

Key Takeaways

• Adfin's $18 million Series A, led by Index Ventures on 12 May 2026, brings total funding to over $30 million in under two years — a rapid capital accumulation pace for a UK fintech startup.
• The company's reported 9% late-payment rate among its 1,500+ customers compares favourably to the UK SME average of approximately 63%, though the figure is self-reported and may reflect selection bias.
• Co-founders Tom Pope and Ciprian Diaconasu bring deep payments infrastructure pedigree from Worldpay, Tink ($2.2 billion Visa acquisition), and Mambu ($5.3 billion valuation).
• The "agentic finance" positioning — combining owned payment rails with AI-driven workflow automation — represents a differentiated but capital-intensive strategy in a crowded market that includes GoCardless, Billtrust, and Chaser.
• Execution risk is concentrated in three areas: product scope expansion, international market entry, and maintaining payment performance metrics as the customer base scales beyond early adopters.

References & Bibliography

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[14] UK Government. (2026). Small Business Commissioner. https://www.gov.uk/
[15] Solicitors Regulation Authority. (2026). Client money and accounts rules. https://www.sra.org.uk/
[16] Care Quality Commission. (2026). Provider financial sustainability. https://www.cqc.org.uk/
[17] UK Government. (2026). The Construction Playbook. https://www.gov.uk/government/publications/the-construction-playbook
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[19] MarketFinance. (2026). About MarketFinance. https://www.marketfinance.com/
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