Professional bookkeeping, without the hassle or high costs.
Extremum is the digital accounting firm for entrepreneurs in the Netherlands. We take care of your bookkeeping, tax filings and financial advice — personally, in plain language, at a fair price.
Not too expensive. Not too impersonal.
A traditional accounting firm is thorough, but often pricey and slow-moving. A bookkeeping app is cheap, but leaves you on your own when you have questions. Extremum combines a digital way of working in Exact Online with a fixed point of contact you actually know — at a sharp, transparent price.
Thorough, but pricey and impersonal Standalone bookkeeping app
Cheap, but you're on your own
What we take care of for you
Three core tasks, done the way they should be: correctly, on time, and in language you understand.
- Bookkeeping Your complete bookkeeping in Exact Online, from receipt or invoice to report — so you know exactly where your business stands, without spending hours on it yourself.
- Tax filings Income tax, VAT and corporate tax returns filed on time and correctly. Thorough, with no missed deadlines.
- Financial advice Practical advice about your finances, tailored to your situation — in plain language, not jargon.
We file your tax returns digitally with the Dutch Tax Administration, correctly and on time.
What we work on every day
From tax returns to bookkeeping — these are the things Extremum takes off your hands.
- Income tax
- VAT
- Corporate tax
- Payroll
- Annual accounts
- Freelancers
- Sole proprietorship
- Partnership (vof)
- Micro BV
- Financial advice
And as you grow, we grow with you
You can start small with bookkeeping and tax returns. As your business changes, our services automatically expand with it.
- 1 Payroll Once you take on staff, we take care of payroll administration too.
- 2 Annual accounts When you switch to a B.V., we prepare the annual accounts for you.
Who Extremum is for
For (starting) entrepreneurs in the Netherlands who have little time to do their own bookkeeping, and who are looking for a fixed point of contact who thinks along with them now — and as the business grows. In short: for the smaller end of Dutch SMEs, such as freelancers, sole proprietorships, partnerships and micro BVs.
- ZZPFreelancers (ZZP)
- EMZSole proprietorships
- VOFPartnerships (VOF)
- B.V.Micro BVs
Why Extremum
Transparent pricing
By working with Exact Online and fixed processes, our services stay affordable — with no surprises.
Personal contact
One fixed point of contact who knows your business and is quick to reach. You're not just a file number.
Plain language
Financial and tax matters are explained so you actually understand them, not just sign them.
Get in touch
Tell us briefly about your business, and we'll get in touch to arrange an introduction.
Prefer to talk directly? Call +31 6 14 14 61 70 or email info@extremum.nl.