Running your own business in the Netherlands? Tired of complicated software — or endless clicking around in Excel? Synomi exists to simplify the things others needlessly complicate.
Synomi speaks your language — no complicated concepts, no accountant jargon. We simplify the things others needlessly complicate.
It doesn’t get simpler than that.
Daisy — Synomi’s voice assistant — listens and understands. She knows your clients, your services and your BTW rates. You just approve.
In your own words, no memorised commands — in English, Dutch, Polish or Ukrainian.
It finds the client in your records — or looks them up in the KvK register — and picks the service, the BTW rate and the numbering. Zero forms.
“Shall I attach the timesheet?”
A ready-made PDF in Dutch — exactly the way your client and the Belastingdienst want to see it.
Everything you need to run a business in the Netherlands, in one place: invoices, expenses, mileage, timesheets, BTW returns and day-to-day admin. The rest you switch on when you need it.
Work in your own words — no accounting jargon, no manual to study. Synomi guides you step by step, adapts to the way you work and helps you avoid mistakes. A smart classifier suggests expense categories on its own and warns you when a purchase may not be deductible. The longer you work with Synomi, the more Synomi does for you.
On Android? Don’t wait — download the app directly from us.
A firm account at an attractive price, all your clients in one panel, quarterly statements without chasing paperwork. For every client you bring in — a fixed commission, every month.
Become a partner firmYou start with full access for 14 days. After that you pay only for what you actually use.
Every business is different, each with its own quirks. If you need something specific that you'd like to integrate with Synomi — get in touch.
Yes. Synomi has no document limits — you pay a fixed monthly price and send as many invoices as you need. We don't want to stand in the way of your business growing — we want to cheer it on.
Yes — every invoice, timesheet and report is generated in Dutch, whatever language you work in. You use Synomi in English, your client gets a document in proper Dutch.
You tap Daisy and tell her what to do: send an invoice, start a timesheet, log your kilometres. In your own words, no memorised commands — and if she doesn't understand something, she'll ask. Speech is recognised on your phone and we don't store audio recordings.
Unlimited invoices (standard, BTW-verlegd, credit notes, VAT margin), voice control, expense records, client, supplier and service directories, BTW reports, plus the mobile and web app. Full descriptions on the Features page.
Some people get around just fine on a bicycle; others need a limousine. The base package is a solid Dutch bike that takes you where you need to go — and the add-on modules (OCR scanner, GPS mileage, Working hours, Calendar & admin, Inventory, Projects, Daisy AI…) turn it into a limousine. Each module is € 5 a month, you switch them on and off whenever you like, and during the trial you test them all for free. Details on the Modules page.
You don't have to, but you can. The Dutch tax office doesn't require you to sign a contract with an accounting firm. You can file on the Belastingdienst website yourself using DigiD — you fill in the declaration and you sign it. Do keep in mind that Synomi won't file the declaration for you and won't represent you before the tax office — Synomi helps you run your business. We work with accounting firms all over the Netherlands — if you'd like one, drop us a line, we'll be happy to help.
Your data lives on our own server in a Dutch data centre — not in some anonymous cloud — and is encrypted with a separate key for every company. You manage your company's data yourself; we just look after it on your behalf. No ads, no trackers, no selling data. You can export everything with one click and delete your account yourself. More — in plain language — on the GDPR / AVG at Synomi page.
The subscription never renews by itself — no silent charges; you approve every payment consciously (iDEAL). You buy 1, 3, 6 or 12 months at a time; if you don't extend, it simply expires and your data switches to read-only so you can download your documents. You can delete your account at any time.
Less clicking. Less paperwork. More time for yourself. Give it a try and tell Daisy what you did today — your first invoice will take you three minutes.
Try it free
