The system is yours to shape, and shaping it is a normal part of running an accounting firm. Whether your own developers do the work or ours do, you always have someone who knows the engine sitting on your side of the table.

Open APIs, documentation and a development environment, so your own team can build views, workflows and integrations without asking us for permission, or paying us to do it.
Need something built, extended or migrated? Our developers work at project or hourly rates agreed in advance, as an extension of your team rather than a support queue.
A named contact, regular reviews and a shared roadmap. What you need built shapes what we build next, you are not waiting behind every other customer.
Customising the engine is not an exception, it's the point. Most customers keep developing theirs for years, and the licence price doesn't move mid-term while they do.
The licence is the starting point, not the finished result. We begin with a joint project: the engine is bent to your process, wired into your systems and your authorities, and taken into production in stages, at your pace.
We go through your workflows, document types, chart of accounts and approval chains, and shape the engine around them. Views, roles and rules are built to the way you work, not to a generic template.
We connect the engine to banks, e-invoicing operators, payroll and ERP systems, and to national and local authority interfaces. If you need a link to your own or an unusual system, it is built as part of the project.
We run the engine on your own material alongside your current process and compare the results line by line. Your team signs off on the quality before anything moves to production.
We agree together which entities, clients or countries move first, who trains whom and when. The phasing is designed so your bookkeeping is never off the air.
The scope and the price of the project are agreed up front during scoping. It is not an hourly bill that grows along the way.
AI moves faster than any procurement cycle can follow. The point of the partnership is that you don't have to chase it: we watch the field, evaluate what ships, and bring the best of it into the engine as part of its ongoing development.
When a better model ships, we test it and wire it into the engine. You don't run a tender, build an integration or learn a new tool. Your workflows stay as they are, the output gets better.
No model change reaches production until it has been run against real accounting material. Newest is not automatically best, and we tell you which one it is.
The engine is not tied to one model provider's generation. Open interfaces and your own data mean the technology underneath gets swapped on your behalf, not at your expense.
The system stays put, the AI inside it keeps getting better. As the technology advances, new AI capabilities are yours to switch on whenever you want them.
In Finland we serve locally through Kirjuri: the reference service Finnish accounting professionals use every day. Posting instructions, guides and Kirjuri chart-of-accounts templates in one place, always current and built for Finnish accounting law and practice.
Visit kirjuri.fi
kirjuri.fi Practical, up-to-date instructions for the situations that actually come up in day-to-day bookkeeping.
Ready-made, maintained chart-of-accounts templates you can take straight into use.
Maintained continuously as legislation and practice change, no more hunting through outdated PDFs.
Hundreds of Finnish accounting firms, users and partners











Kirjuri is built by the same team as Accounting.dev, the same knowledge feeds the engine's country knowledge banks.
Tell us what you're running today, and we'll show you what the same work looks like on Accounting.dev, and what it costs. Predictably.