BlueLetter — an iOS app for internationals in NL

Dutch letters, finally in your language.

Point your phone at a letter from the Belastingdienst, DUO, IND or your gemeente. BlueLetter returns a full translation, a plain-language summary, and every deadline it finds — wired to a reminder. In 14 languages.

Free to start · 1 scan a month · no card See how it works
BL
BlueLetter · now
Deadline in 14 days — pay €2,847 to the Belastingdienst by July 24.
Sample letter · illustration Reading your letter…
Belastingdienst
Postbus 2536 · 6401 DA Heerlen
Aanslagnummer 2025.V.01.6401 — Datum: 4 juli 2026
Voorlopige aanslag inkomstenbelasting 2025

Geachte heer/mevrouw,

U ontvangt deze voorlopige aanslag op basis van de gegevens die bij ons bekend zijn. Het te betalen bedrag is € 2.847,00.

U dient dit bedrag te betalen vóór 24 juli 2026. Betaalt u niet op tijd, dan kunnen wij u een betaalverzuimboete opleggen.

Bent u het niet eens met deze aanslag? Dan kunt u binnen 6 weken na de datum van deze aanslag bezwaar maken.

Sender read off the letter · Belastingdienst
Translation · English +10
AI-generated · verify the Dutch original 2 facts extracted
Amount due
€2,847
Deadline
July 24in 14 days
An illustration of a scan — not live output.
14
Languages your letter comes back in
1
Free letter every month — no card
0
Letter photos kept on our servers
How it works

Four steps between the doormat and the deadline.

Letter 0001 · Belastingdienst Step 01 · Read
Belastingdienst
Postbus 2536 · 6401 DA Heerlen
Sender read off the letter · Belastingdienst.
Aanslagnummer 2025.V.01.6401 — Datum: 4 juli 2026
Voorlopige aanslag inkomstenbelasting 2025

Geachte heer/mevrouw,

U ontvangt deze voorlopige aanslag op basis van de gegevens die bij ons bekend zijn. Het te betalen bedrag is € 2.847,00.

U dient dit bedrag te betalen vóór 24 juli 2026. Betaalt u niet op tijd, dan kunnen wij u een betaalverzuimboete opleggen.

Bent u het niet eens met deze aanslag? Dan kunt u binnen 6 weken na de datum van deze aanslag bezwaar maken.

Hoogachtend,
de inspecteur

Translation · English
Provisional income tax assessment for 2025. You must pay €2,847 by July 24, 2026. If you disagree, you can object within 6 weeks.
AI-generated. May contain errors. For high-stakes decisions, verify with the original Dutch text.
Amount due
€2,847
Deadline
July 24in 14 days
BL
BlueLetter · July 17
Deadline in 7 days — pay €2,847 by July 24.
Pay Belastingdienst — €2,847
Thursday, July 24 · added to Calendar
Today
Reminder · Jul 17
Due · Jul 24
Step 01 · Read

First, we read it.

One photo. BlueLetter reads the whole letter, in Dutch, and tells you which agency sent it — Belastingdienst, DUO, IND, UWV, CJIB, KvK or your gemeente. It can't tell you a letter is genuine, so it never pretends to.

Belastingdienst
Postbus 2536 · Heerlen
Sender read off the letter.
Step 02 · Translate

Then, we translate it.

A full translation and a plain-language summary, in your language — not bureaucratic Dutch, not dictionary fragments. The original stays alongside, so you can always verify.

Translation · English
Provisional income tax assessment for 2025. You must pay €2,847 by July 24, 2026.
AI-generated. May contain errors. For high-stakes decisions, verify with the original Dutch text.
Step 03 · Extract

Then, we find what matters.

Two facts decide this letter: €2,847 and July 24. BlueLetter pulls them out of the prose and puts them where you can't miss them.

Amount due
€2,847
Deadline
July 24in 14 days
Step 04 · Remind

Then, we make sure you act.

Every date the letter names becomes a push notification and a calendar event, set before you've put the letter down. Reminders and calendar adds are part of the paid tiers — Standard and Pro.

BL
BlueLetter · July 17
Deadline in 7 days — pay €2,847 by July 24.
Pay Belastingdienst — €2,847
Thursday, July 24 · added to Calendar
Push · 7 days before Calendar · July 24
The math

Ignoring it is the expensive option.

Dutch fines escalate on a legal schedule — 50%, then 100%, then the bailiff. Slide to watch a small one grow.

€132
The fine, as issued.
On the doormat today
Typical escalation: CJIB fines rise 50% then 100% by law. Tax amounts vary per assessment. Every letter differs — that's rather the point.
Straight answers

The app hasn't launched, so there's nothing to quote yet.

No user counts, no testimonials, no fines-avoided ticker — none of that exists until people are actually using it. Here is what the app does and what it deliberately doesn't.

An aid, not an authority
The translation is AI-generated, and it can be wrong.

BlueLetter shows the Dutch original beside every translation so you can check it. For anything with money, residence or legal consequence, verify the original and talk to a qualified professional.

Where your letters live
The photos stay on your phone.

A photo passes through our backend to the AI provider during a scan and is never written to our storage. The resulting text, summary and deadlines sync through an EU database so they follow you between devices.

What it costs
One letter a month is free, forever.

Standard is €4.99 a month for 20 letters; Pro is €9.99 for 60, plus PDF export and Family Sharing. Reminders and calendar adds start at Standard. Prices shown in the App Store apply in your country.

Get the app

Be first in line.

BlueLetter is coming to the App Store. Leave your email and we'll send one message the day it's there — then your first letter is free.

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