fulll.io: closing the financial loop for accountants and SMBs

The opportunity: fulll’s ambition was to build a financial operating system for accounting firms and SMBs. Despite integrating providers such as a payment processor for invoice collection and open banking for real-time banking connectivity, one structural friction kept breaking the workflow: banking was sitting outside accounting.

The solution: fulll partnered with Swan to embed business accounts and payment tools directly inside their platform. By bringing payments, documents, and accounting into the same system, fulll eliminates delays, removes the need for manual reconciliation, and replaces fragile bank aggregation with a native financial layer.

The impact: Accounting firms spend less time recovering data and more time advising. SMBs benefit from faster payment collection through payment links, a clearer real-time view of cash, and a workflow that helps them get ready for France’s upcoming e-invoicing reforms.

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When fulll was created, the ambition was clear: build a platform that helps accounting firms run production at scale and gives SMBs a better day-to-day view of their finances. The first chapters of that story focused on efficiency: accounting, payroll, pre-accounting, document management.

But very quickly, fulll observed a bottleneck. Transactions were arriving late or inconsistently, and payments still happened in separate tools.

fulll’s first attempt to close that gap combined two building blocks:

• Open Banking provider to retrieve transactions, support their reconciliation and enable cash flow monitoring.
• A payment processor integration powering a payment collection tool, mainly to help businesses collect small invoices.

On paper, the logic was sound: one integration to centralize financial data, another to simplify invoice collection. But as fulll tried to turn this into a truly end-to-end workflow, the cracks began to show:

• Open Banking could retrieve data, but it struggled with initiating complex payment flows and real-time operational needs, leaving reconciliation fragile and incomplete.
• Card payments had low adoption and frequently left incoming funds scattered rather than consolidated into a single operating account.

Originally, we wanted to aggregate all bank accounts via Open Banking and integrate payments into our clients’ journeys. For accounting firms, we also needed these elements to reconcile cleanly. But Open Banking proved unreliable for handling multiple payments.— Thomas Petitberghien, Lead Product Manager at fulll

That created a paradox: SMBs would collect money in one place, then pay again to move it elsewhere, just to be able to pay suppliers and run day-to-day operations. Together, these limitations introduced friction rather than simplicity, leaving banking still structurally outside the accounting core.

So fulll made a decisive shift: instead of connecting to banking, they would embed it.

The “why” behind embedded banking

fulll’s move to embedded banking was not about adding another feature. It was about changing where money lives in the workflow: inside their users’ accounts, and inside their platform.

That shift changes what fulll can offer to both accounting firms and SMBs: more control over the journey, less fragmentation, and a path to true real-time workflows.

By embedding business accounts and payment tools into the fulll platform, the team can:

• Close the loop between transaction, document, and accounting entry so reconciliation starts at the source.
• Automate reconciliation natively, without relying on delayed feeds or manual imports.
• Bring cash visibility into the day-to-day workflow, with balances and transactions available when decisions are made.
• Support both sides of money movement (collecting and paying) from a single account, instead of multiplying wallets.

What fulll built with Swan

fulll embedded business accounts into their platform, and built an complete enablement ecosystem for accountants, to deliver a more coherent financial workflow for small business leaders. With it, a business can:

• Validate or reject purchase invoices and pay them immediately, with the balance visible in the same interface.
• Collect payments without sending users to another provider.
• Use a payment card for everyday spending, with real-time notifications and immediate accounting context.
• Centralize incoming and outgoing flows in a single account, avoiding unnecessary transfers and fees.

This changes the rhythm of accounting and turns bookkeeping into an ongoing process instead of a monthly catch-up.

The difference between someone who opens a fulll account and someone who uses a traditional bank is that, in the latter case, fulll and the accounting firm recover bank statements with a delay. With the Swan-powered card, I pay for lunch at a restaurant, get an instant notification, and take a photo of the receipt before I lose it, then upload it in the app. And then my accounting is done. It’s easier. — Laurent Falorni, CPO at fulll

A key use case: payment links

fulll was also one of Swan's first partners to implement payment links, a feature designed to solve a recurring pain point: the friction between sending an invoice and receiving funds.

For small businesses, especially those working with consumers or handling many small transactions, this friction has real costs. Every delayed payment means another reminder to send, more time spent chasing receivables, and cash that sits outside the business longer than it should.

Payment links close that gap:

• Clients pay instantly through a secure link embedded in the invoice.
• The payment is immediate, verified, and because it's already tied to the invoice in fulll, reconciliation happens automatically.
• There's no manual matching, no delay waiting for bank feeds, and no ambiguity about which payment corresponds to which document.
• If the payment is not done or delayed, you can setup automatic reminders with a new link for the overdue payment.

By reducing the time between invoice and cash in hand, payment links help SMBs maintain healthier cash flow and spend less time on administrative follow-up.

Accountants: the engine of adoption

fulll’s model is built around accounting firms, and accountants are not simply end users. They are also advocates.

Because accountants sit at the center of an SMB’s financial life, they are positioned to recommend tools that simplify the data flow and improve collaboration. And when the recommendation includes a business account embedded in the accounting workflow, the accountant is proposing a seamless collaborative pipeline that benefits both the firm and the client.

E-invoicing as a catalyst for the advisory accountant

The role of the accountant is also evolving and changing, accelerated by upcoming e-invoicing regulations. They are moving from the “data entry” era to becoming the architects of their clients’ digital transformation. With e-invoicing affecting everyone, accounting firms are increasingly acting as trusted advisors and technology curators.

Embedded banking is what makes this new role a reality.

By embedding business accounts in the accounting workflow, fulll helps firms secure data at the source and reduce the time spent on administrative recovery. The result: more time for higher-value financial advisory, turning the compliance challenge of e-invoicing into a strategic opportunity to deepen the client relationship.

What will change the most in France is the shift to electronic invoicing on September 1, 2026. Suppliers will send invoices that arrive directly in the company’s management software, so the invoice flow is in real time. If the bank flow is also in that same software, even better: accounting happens synchronously, alongside every flow. That’s when it becomes truly valuable for users. — *Laurent Falorni, CPO at fulll

In the medium to long term, fulll’s view is that the accountant becomes the point of reference for SMB development. This dynamic is reinforced by fulll’s business model: they provide the infrastructure and bills the accounting firm directly. Firms then keep full autonomy to package and price the offer for clients in the way that best fits their positioning.

Supporting accountants with an enablement ecosystem

fulll’s first mission was to demonstrate robustness and security, starting with clear reassurance about Swan and the safeguards behind the embedded banking model. To support rollout, fulll built an enablement ecosystem designed to make adoption easy inside firms, and later for SMB clients:

• Webinars focused on the strategic promise and value for accounting firms.
• On-demand e-learning with short, modular content for accounting firms’ staff, and later for clients.
• A ready-to-use communication toolkit: tutorial videos, email templates for clients, a promotional video, and targeting tips to identify which clients to start with.
• Highly pedagogical help documentation covering the full module.
• Dedicated, high-priority support with specific workflows for financial topics.

When firms feel fully reassured, they naturally move from being users to being advocates.

Choosing a partner built for trust, compliance and full-service collaboration

fulll’s criteria went beyond pricing. Operating at the heart of the accounting profession, reliability and compliance were non-negotiable, Swan stood out first for its security and compliance posture, aligned with Fulll’s requirements for European data protection.

Just as importantly, fulll valued Swan’s full-service partnership model. Support went beyond API documentation, with strategic alignment on the product roadmap, hands-on guidance during integration, deployment support, and training materials for fulll’s own support teams, making it easier to scope the project, estimate costs early, and move forward with confidence.

Beyond the cost comparison, what won us over was the quality of the technical documentation. As a team that also produces documentation for partners, we know how much it matters. In a way, it is part of the product we are buying. And then there was Swan’s support and training, as well as the guidance through the build phase and the transition into the run phase.— Thomas Petitberghien, Lead Product Manager at fulll

A product built to consolidate financial workflows

fulll’s partnership with Swan is all about product coherence.

By embedding business accounts and payment tools directly into the platform, Fulll is turning fragmented steps into a single workflow: collect, pay, track, and reconcile, without leaving the interface where SMBs and accounting firms already work.

For firms, it means a platform that supports both production efficiency and stronger client collaboration. For SMBs, it means fewer tools to juggle and less time spent on follow-ups and manual admin.

And for fulll, it is a concrete step toward the long-term vision they started with: a complete financial operating system built for accounting firms and the businesses they support, powered by embedded banking infrastructure from Swan.