Built for expats in the Netherlands

Know what your Dutch documents mean. Never miss a deadline that matters.

Document Decoder gives you a plain-English breakdown of Dutch official documents — payslips, tax letters, toeslagen notices, and annual income statements. Deadline Guardian computes your personal admin calendar from your actual dates and situation, then emails you at 60, 30, and 7 days before each one closes.

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1 document free per month · Deadline Guardian always free · no card required

Documents processed in memory — never stored on any server

See how it works

Payslip at a glance

You earned €4,850 gross this month. After tax and deductions your take-home is €3,210 net. No anomalies detected.

30% ruling

The tax-free allowance of €1,455 is ~30% of gross — this looks correct.

What you need to do

Nothing required. File this payslip and your records are up to date.

Up to €100K

The tax saving available to high-earning qualifying expats through the 30% ruling — but only if you apply within 4 months of starting your job

6 weeks

The bezwaar (appeal) window after a tax assessment — miss it and your right to challenge the decision is gone

€469

The verzuimboete that applies once you ignore a summons for a late tax return — rising to €6,709 for repeat offences. Deadline Guardian sends you a reminder 60, 30, and 7 days out.

Two tools. Both problems solved.

Understand the letter that just arrived. Know the deadline coming up next. DutchDecoded covers both.

Decode a Document

Upload a Dutch official document and get a plain-English breakdown — every number explained, every deadline flagged, and a clear verdict on what you actually need to do.

1Upload your PDF or photo

2Reads every line with Dutch tax logic, not generic translation

3Your action verdict in under 20 seconds

Deadline Guardian

Answer a few questions about your situation. We calculate every Dutch administrative deadline that applies to you and surface them in priority order — with the exact window and what's at stake.

1Tell us your arrival date, job start, and living situation

2We calculate your personal deadline set

3Each deadline shown with its window and financial stakes

The deadlines most expats don't know about until it's too late

Each has a hard cutoff. Some of the consequences can't be undone.

30% ruling application

High stakes

4 months from employment start

Miss the window and you permanently forfeit up to €100,000 in tax savings over 5 years. No extensions, no appeals.

BRP registration

5 days from arrival

A €325 fine if you miss it — and you cannot open a bank account, get DigiD, or sign a phone contract without being registered.

Health insurance (zorgverzekering)

From your first day of residence

No formal grace period. Once the CAK detects you are uninsured, you get a 3-month deadline; ignore it and you are fined €529.74 per notice (up to two notices), then forcibly enrolled in a state-assigned plan with premiums backdated to your arrival date.

Belastingaangifte (tax return)

1 May each year

€469 verzuimboete (administrative penalty) once a summons is ignored, rising to €6,709 for repeat offences.

Deadline Guardian calculates all of these from your actual situation — your dates, your status, your deadlines.

Track these for free with Deadline Guardian →

Why not just use ChatGPT?

General-purpose AI can translate the words. It won't tell you this letter is a final demand, that a 6-week appeal window applies, or that your loonheffingskorting (payroll tax credit) setting will cause a year-end tax bill. Context is the whole job.

Urgency, not just translation

An aanmaning (final demand) needs action today. A voorlopige aanslag (provisional assessment) needs payment by a date. A teruggaaf (refund) needs nothing. DutchDecoded tells you exactly which one you're holding — and flags the 6-week bezwaar (appeal) window so you know to act before it's gone.

30% ruling & loonheffingskorting — both checked

Two payslip lines that regularly cause year-end surprises for expats. DutchDecoded checks both on every loonstrook and flags anything that looks like it could cost you money come tax season.

Deadlines calculated from your situation

ChatGPT gives you the general rule. Deadline Guardian gives you your date — based on your actual arrival date, job start, and 30% ruling status. BRP, zorgverzekering, belastingaangifte, toeslagen — all in one place, in priority order.