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Professional AI Agent

Review old tax declarations. Find money you may have missed

Keep your daily administration under control.

In your language, through WhatsApp, Telegram or the ELTONIS app.

€6,528 already recovered in completed cases

Individual results vary. A review does not guarantee a refund.

Example only. The amount shown is not a real case — individual results depend on your documents.

Completed cases

Real reviews. Real results

€6,528 already recovered in two completed cases.

€6,528 recovered

recovered

  • Already recovered

    Money that has been returned in completed cases.

  • Possible refund

    Identified during a review and still to be confirmed.

  • Estimated saving

    A projection only. Never presented as a result.

Case 01

€2,500

recovered

  1. Previous declaration reviewed
  2. Relevant issue identified
  3. Correction supported
  4. Refund received

Case 02

€4,028

recovered

  1. Previous declaration reviewed
  2. Missed financial opportunity identified
  3. Correction supported
  4. Refund received

Individual results vary. A review does not guarantee a refund.

How a review works

Four stages, from the documents you already have to administration that stays organised.

  1. Share your documents

    Start with the documents you already have. ELTONIS guides you through anything else that may be needed.

    • Previous declarations
    • Relevant financial documents
    • Or a connection to a service you already use
  2. ELTONIS reviews them

    Your information is structured, checked and prepared for professional review where required.

    • Declarations
    • Reported income
    • Relevant expenses
    • Possible missed deductions
    • Inconsistencies
    • Missing information
  3. Receive a clear result

    You are told what was checked and what the review found — in plain language, in your own language.

    • No meaningful issue identified
    • Additional information required
    • Possible correction identified
    • Professional review recommended
    • Refund process can be started
  4. Keep administration organised

    After the initial review, ELTONIS continues with the everyday work so nothing is left to the deadline.

    • Time tracking
    • Receipts
    • Invoicing
    • VAT administration
    • Annual declarations
    • Reminders and financial questions

Where a regulated decision is required, a qualified professional reviews and approves the advice before it reaches you.

Use ELTONIS where you already communicate

The same agent, and the same case, across the channels you use every day.

How the daily check-in behaves

  • The reminder is sent at 17:00 in your local timezone.
  • The time can be changed later to fit your working day.
  • Once you have answered, you are not asked again.
  • Text, photo and document input are supported.
  • Availability depends on the channel.
  • WhatsApp
  • Telegram
  • ELTONIS app

One agent for everyday administration

The first review is the entry point. What follows is the part that never stops.

  • Previous declaration review

    Review previous declarations and identify possible mistakes, missed expenses or overpayments.

  • Time tracking

    Report working hours through a short message instead of completing complex forms.

  • Receipt management

    Send a photo. ELTONIS extracts and organises the important information.

  • Invoice preparation

    Turn approved hours into prepared invoices with fewer manual steps.

  • VAT administration

    Keep relevant transactions organised for quarterly VAT reporting.

  • Annual tax preparation

    Maintain better records throughout the year instead of searching for everything at the deadline.

  • Reminders

    Receive timely reminders about missing documents, declarations and administrative tasks.

  • Multilingual explanations

    Understand financial and administrative information in the language you use every day.

Keep the tools you already use

ELTONIS works between you, your documents and your current accountant or accounting software. You communicate through one simple conversation while ELTONIS organises the information behind the scenes.

One conversation, not another tool to manage.
  1. WhatsApp, Telegram or app
  2. ELTONIS
  3. Your existing administration

One place to send information. ELTONIS prepares it for wherever it needs to go.

Current integration status

  • JorttPlanned
  • MoneybirdPlanned
  • Secure export (CSV / PDF)Active
  • Your own accountantActive

Only connections listed as available are live today. Everything else is stated as planned.

Manage a crew?

Collect hours, approve weekly work and reduce invoice mistakes without replacing your current administration.

The crew pilot is currently open to a limited number of teams.

ELTONIS for crews
  • Collect hours consistently
  • Approve weekly hours
  • Reduce invoice mistakes
  • Identify missing documents
  • Receive one structured overview
  • Communicate with workers in their own languages
  • Integrate with current administrative processes

ELTONIS can help identify missing information and administrative risks. It does not replace legal or tax advice and cannot guarantee the legal classification of a working relationship.

Secure infrastructure for official processes

ELTONIS is preparing certified connections for supported Dutch government processes. Until each integration is approved and activated, relevant actions are completed through the current authorised process.

Every action that involves your tax data requires your explicit authorisation. ELTONIS does not act on your behalf without it.

A certificate supports authenticated communication for specific approved processes. It does not provide unrestricted access to government or personal data.

Certificate status

In implementation
Held by
ARTiXANT
Certificate provider
KPN
Trust framework
PKIoverheid
Framework managed by
Logius
Environment
Test environment

Supported integration status

  • Authorised tax-data exchangeIn implementation
  • VAT submissionPlanned
  • Filing a correctionPlanned

Status verified on July 1, 2026

More technical information about PKIoverheid

Your financial information requires more than a password

Only measures that are actually implemented are listed here.

  • Data encrypted in transit
  • Data encrypted at rest
  • European hosting
  • Role-based access
  • Separation of administrator and worker accounts
  • Audit logging
  • Explicit permissions per action
  • Documented data deletion process
  • Secure document storage
  • Session management
  • Two-factor authentication
  • Documented incident-response process

Who can see what

A crew owner or administrator does not automatically receive access to a worker's private tax declarations, expenses or personal financial records. Access follows explicit roles and permissions.

Administrator account

Can manage

  • Organisation settings
  • Permitted integrations
  • User invitations
  • Operational configuration
  • Authorised crew information

Worker account

Can access only

  • Personal hours
  • Personal receipts
  • Personal invoices
  • Personal documents
  • Personal tax workflow
  • Explicitly shared crew information

Role separation is currently being implemented.

Designed with GDPR requirements in mind. GDPR is a legal framework, not a product certification — so ELTONIS does not claim to be "GDPR certified".

Less administration. More clarity

Without ELTONIS

  • Receipts spread across chats and folders
  • Hours remembered at the end of the week
  • Manual invoice preparation
  • Missed deadlines
  • Unclear Dutch letters
  • Previous declarations never reviewed
  • Several disconnected tools
  • Repeated information entry

With ELTONIS

  • One conversational interface
  • Daily hour collection
  • Structured receipts
  • Prepared invoices
  • Proactive reminders
  • Multilingual explanations
  • Previous declaration review
  • Connection to existing processes

Questions people ask first

Does ELTONIS guarantee a tax refund?

No. Every tax situation is different. ELTONIS reviews the available information and helps identify issues or opportunities that may require correction or professional review.

What documents do I need?

This depends on the years and declarations being reviewed. ELTONIS guides you through the required documents after onboarding, so you do not have to work it out in advance.

Can I continue using my accountant?

Yes. ELTONIS is designed to support and simplify existing administrative processes rather than automatically replace an accountant.

Can I use Jortt or Moneybird?

ELTONIS is intended to work around existing accounting processes. The current status of each connection is listed openly in the integration section above — connections marked as planned are not live yet.

Which languages are supported?

Dutch, Ukrainian, Polish, English, Russian and German initially.

Where can I use ELTONIS?

Through WhatsApp, Telegram and the ELTONIS application, subject to channel availability.

What does the certificate provide?

The certificate supports secure authenticated communication for specific approved processes. It does not provide unrestricted access to all government or personal data.

Can my crew owner see my tax information?

Not by default. Personal tax and financial information remains restricted to the worker unless explicit authorised access is provided.

Your previous declarations may be worth reviewing

Start with a secure review and receive a clear explanation of what was checked and what can happen next.

No refund is guaranteed. Individual results depend on the documents and tax situation.

Start your free review

Six short questions. No documents are uploaded here — after this step you receive a secure link for that.

We use this only to open your review.

Where should ELTONIS reach you?

Do not send tax documents by email or chat before your secure upload link is ready.