Tax Information Box (DIS+): what services does it offer?

JUDr. Ondřej Preuss, Ph.D.
23. January 2026
14 minutes of reading
14 minutes of reading
Tax law

Electronic communication with the tax office is no longer just the domain of accountants or tax advisors. The Tax Information Box (DIS) is now a practical tool for everyone who wants to keep their taxes under control: from employees to self-employed persons to company executives. In one secure application, you can see the obligations, payments and overpayments in your personal tax account, consult the public part of your electronic file, submit forms without additional signatures and set up your own tax calendar with alerts.

In this article, we explain what DIS is, what the tax box is for, how the login works, how to read your personal tax account and what specific tax information box services you can use in practice.

What is a tax information box (DIS)

The tax information box is an electronic interface that allows taxpayers to remotely access selected data from their files and personal tax accounts. As of 2021, it is an upgraded version called DIS+. DIS+ is based on the legal basis of the Tax Code and access is part of the MY Taxes portal. The original DIS was discontinued on 28 February 2022 and its functions replaced by DIS+.

DIS+ is not an extra marketing name, but a label for an extended generation of the service: in addition to displaying information, DIS+ is used to directly file and send a range of returns, set up notifications, manage permissions and work with pre-filling data in forms.

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Login to the tax information box

DIS+ can be found on the MY Taxes portal. From the homepage, you will enter the Online Tax Office section, where you will be authenticated and logged in. The first login is sufficient for activation – after that the service is immediately usable, without waiting for approval. Data (e.g. personal tax accounts, calendar, document overview) is typically populated within 48 hours of activation and is continuously updated in DIS+.

What login methods to use:

  • Citizen identity (e.g. eCitizen with chip, BankID, MojeID, etc.);
  • data boxlogin ;
  • access data assigned by the Financial Administration after application and identity verification.

Access is intended for natural persons – either directly to the tax entities or to persons with the right to act on their behalf (statutory bodies, legal representatives, insolvency administrator, appointed representative), or to persons to whom you grant authorisation.

Importantly, the access data (username/password and authorization phone) can be assigned by the tax office (after your request with identity verification) and can be invalidated or changed directly in DIS+.

What you will find in DIS+

After logging into a specific tax box (your DIS+), you will be greeted by a summary of balances and recent movements and a link to the Personal Tax Accounts section. Here you will get an overview of your tax liabilities and payments broken down by individual tax and tax office (including information on what has been cancelled). You can see the amounts due, payments received, any overpayments or underpayments and the status to date. The data is displayed in DIS+ by default for the current year and four years back and is updated within 48 hours of a change at the tax authority.

What exactly is a personal tax account?

It is the tax administrator’s recordswhere regulations, payments and accessories (e.g. interest and penalties) are tracked separately for each type of taxand for each tax entity. In DIS+, you have this information in a clear format and can look at the movements in the account at any time – in simple terms, what you have been prescribed and what you have paid. The DIS+ input screen also shows the balance – that is, the total of prescriptions and payments across all personal tax accounts as of the date shown.

In addition, DIS+ displays a summary of documents (selected documents recorded in the electronic file) and a personal tax calendar with the option to set which types of events you want to track. Notifications can be received within DIS+ and by e-mail, according to your own settings.

Tax information box services

DIS+ is no longer just a “window” where you read something and that’s the end of it. The tax administration itself describes it as an “electronic self-service” or “online tax office ” – a place where you can actually sort out many of your tax obligations without visiting the office in person. From a practical perspective, the biggest advantage is that DIS+ not only lets you view information from your personal tax account and selected parts of your file, but you can also fill out and submit a return, set up notifications and manage users and permissions – i.e. who can act for you in the tax box.

Electronic forms (EPO) directly from DIS+

In DIS+, you can complete and submit electronic forms (EPOs) directly in the MY Tax portal environment. Importantly, when you submit your submission from a DIS+ login, the system will automatically fill in the relevant identification details and also allow you to submit without the need for further signatures (as you have already proved yourself by logging into DIS+). In practice, this means fewer steps and less risk of getting lost somewhere in what type of signature to choose.

You can prepare and continuously update your submission, and in some situations you can even check the status of the submission or view the payment details including the QR code straight away.

Pre-filling forms in practice

DIS+ can pre-fill selected data so that filling in is not mainly a matter of retyping. Typically, it will fill in identification details and for some taxes it will even allow for a more complete pre-fill from the last known data from the tax authority.

For personal income tax, the logic is simple: if you’ve ever filed a return before, you can request pre-filling in DIS+ and then choose whether you want to load all available data or just selected items. Then you just add what has changed (new income, discounts, deductions), check and submit.

The same practical approach works for property tax: there is a procedure to use DIS+ to pre-fill the data from the last return. This is especially important for you if you have added more properties, had a change (e.g. an extension, split units) or just want to check that you are filling in the same bases as last time.

Paying property tax

With real estate taxes, the biggest problem tends to be surprisingly simple: where to get the correct payment information and how to keep track of due dates. In DIS+ you will find not only the payment details themselves, but also practical service information: the system will show you the overpayment/underpayment, the tax to be paid and can display the payment details including a QR code for payment via mobile banking. DIS+ also works with the fact that in some cases the property tax is paid in two instalments (typically when the tax reaches a certain amount) and for the instalments it will show you the payment type and due date.

An important and often overlooked part is setting up how you want the payment information to come to you (for example, to DIS+, to a data box, by email, via SIPO or by bank transfer). DIS+ also records the payment data received – i.e. when and where the payment information was sent and what happened to the payment (typically with SIPO).

Letters and files

DIS+ can access a list of documents from the public part of the tax file – i.e. an overview of what the tax office has received from you and what it has issued towards you. For each document, you can open the detail, where you can see, for example, the file number, the type of document, the status and, most importantly, the delivery information (when the office received it, where it was sent, when and how it was delivered).

Another practical feature is that for electronic submissions sent via EPO, DIS+ can display the entire content (typically as a PDF or XML), so you don’t have to hunt for old files on your computer and can check exactly what you sent at any time.

And if you sent your submission via a data box, DIS+ goes one step further: it allows you to ask the tax authorities to publish the XML file of the submission that went from your data box to the tax authority’s data box, so you can archive it or use it to pre-fill the form.

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Personal tax calendar and notifications

DIS+ also offers you a personal tax calendar that works like a regular electronic calendar – only instead of birthdays, it keeps track of due dates to the tax authorities. You’ll see the statutory filing deadlines as well as deadlines set by the tax authority (typically the deadlines from notices), and you can toggle the view by period.

You can also set up these notifications yourself. And in addition to notifications directly in DIS+, you can also set up email notifications (and you can customize the email in the user settings).

Access for other persons: managing permissions and credentials

In practice, it is often not only the managing director or the statutory body who acts for the company, but also the accountant or tax advisor who is in charge of the day-to-day agenda – filing returns, communicating with the tax office, checking payments or overseeing deadlines. That is why DIS+ allows you to grant access authorisation to another individual, so that you do not have to deal with each step personally and at the same time you maintain control over who looks into the “tax box” and what they can do in it.

The big advantage is that credentials are not “all or nothing”. In DIS+ , you set the exact scope of authorization based on what the person actually needs. For example, you can allow him to just view (so he can see personal tax accounts and liability status), or even view and send everything (typically for an accounting firm that files returns). If you want to be more careful, you set permissions on a tax-by-tax basis – for example, so that the accountant can see VAT but not deal with other agendas. And if one main person in the company manages the accesses of several people, you can also give them the role of administrator, i.e. permission to manage users and their accesses.

The invitation itself is simple: DIS+ allows you to hand over permissions either by means of a system-generated code, which the delegated person uses when accepting the invitation, or by entering the ID number of the delegated person. In practice, this will simplify the transfer of access remotely and also reduce the risk of error, as the system will clearly link the authorisation to a specific person.

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Tax consultant, tax accountant or tax law attorney. Who to contact when? The next article will tell you.

How DIS+ saves time

Thanks to the connection of DIS+ with the EPO application, you can not only fill in the return, but also send it directly from the DIS+ environment without having to deal with additional signing. So you don’t have to have a recognised electronic signature, you don’t have to print or post anything. In fact, the submission is automatically authorised by your logged-in identity – i.e. the fact that you have logged into DIS+ in a secure way (e.g. via your bank identity, eCard or data box).

In addition to the actual submission, DIS+ saves you the work of filling it in. It can pre-fill some of the information (typically identifying information and some items from past submissions) so you are not starting with a blank form each time. DIS+ also offers practical functions for ongoing work: you can save the completed form directly in DIS+, reopen it at any time, complete it and then submit it. Similarly, you can download the form for your own archiving or for transmission to your accountant – either as a PDF or as XML.

To help you navigate through it all, DIS+ has a clear “Forms” section where you can find both work in progress items and submissions that have already been sent. You don’t have to hunt through emails or folders on your computer to find out what you’ve actually sent: you can then find a copy of the return and confirmation of submission directly in DIS+ under the ‘Sent’ section .

DIS+ vs. data box: where the difference lies

Many people feel that DIS+ is the same as a data box, just under a different name. In reality, they are two different services that complement each other, but each has a completely different main purpose.

A data box is primarily a tool for official delivery. Put simply, it is an electronic mailbox that public authorities have as an official channel when they need to deliver something to you. The key thing about a data box is that delivery has legal effects – that is, the running of time limits, the creation of obligations and often possible penalties if you do not respond to a document in time. Therefore, it is a good idea to think of the data box as a place that must be checked regularly, as a lying message can trigger a deadline even if you have not actually opened it.

DIS+, on the other hand, is not a mailbox but a working tool for tax management. It works like an online tax office, where you can look at your personal tax bill (what has been prescribed, what you have paid, whether you have an overpayment or underpayment), look at a selected part of your file, follow the tax calendar and, most importantly, fill in and submit electronic submissions. DIS+ therefore helps you to keep track of and proactively manage your tax agenda.

But at the same time, both services can work together. For example, you can log in to DIS+ using your data box login details, so you don’t have to deal with additional authentication. And DIS+ can also keep track of submissions you’ve sent via the data box. In practice, you’ll appreciate this when you send a submission through one channel (data box) but then want to check in DIS+ how the tax administrator has followed up on it and what’s happening in your personal tax account.

Five practical recommendations to make your tax mailbox really help you

Before you go all out with DIS+, it pays to know a few simple “tricks” that will make the tax box not just another portal to your collection, but a real helper:

  1. Activate DIS+ early. Although the service is immediately functional after the first login, it takes up to 48 hours to fill up your account and file.
  2. Set up notifications and a personal tax calendar. Choose the events you really watch for (return due dates, deposit due dates).
  3. Review personal tax bills after every major payment. You’ll avoid interest on late payments and spot a mis-entered variable symbol or account.
  4. If an accountant or adviser files for you, give them a mandate with a clear scope and keep track of who has access to your DIS+.
  5. Make use of pre-filling – you will reduce errors and speed up submission. You can find a copy of the submission and confirmation of submission in DIS+ in the Sent section.

Summary

The DIS+ Tax Information Box is an online tax office on the MY Taxes portal that allows you to control your personal tax accounts and selected parts of your electronic file. Once logged in, you will get an overview of amounts due, payments, overpayments/underpayments and the status to date, typically for the current year and several years back. In addition, DIS+ is not just a peek – you can fill and submit forms (EPO) directly in it without additional signatures, use pre-fill data, work with payment details (including QR code) and track documents and delivery information.

A major benefit of DIS+ is also the tax calendar and notifications (both in-app and via email) and the ability to manage permissions for accountants or advisors with a precisely set scope. In contrast, the data box is mainly used for official delivery with legal effects (running of deadlines), while DIS+ is a practical working tool for tax administration. In practice, it pays to activate DIS+ in a timely manner (data can be completed within 48 hours), set up alerts, check personal tax accounts after payments, keep an eye on the credentials granted, and use both pre-fill and the “Sent” archive to reduce errors and the risk of late penalties.

Frequently Asked Questions

Is the tax information box mandatory?

No. DIS+ is voluntary self-service. However, we strongly recommend setting it up and using it, as you can immediately see the status of payments and obligations and minimize the risk of penalties for default.

Who all can look in my tax box?

In addition to you as the tax entity, persons with the right to act for the entity by law (statutory agent, legal representative, guardian, insolvency or trust administrator) and persons to whom you grant a mandate with a specific scope of authority.

Is the submission sent from DIS+ signed?

Yes – sending from DIS+ is authorized by your verified identity and does not require an additional signature.

What returns can DIS+ pre-fill?

Typically personal income tax (if you have filed before) and also property tax or road tax – by retrieving available data and history.

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Author of the article

JUDr. Ondřej Preuss, Ph.D.

Ondřej is the attorney who came up with the idea of providing legal services online. He's been earning his living through legal services for more than 10 years. He especially likes to help clients who may have given up hope in solving their legal issues at work, for example with real estate transfers or copyright licenses.

Education
  • Law, Ph.D, Pf UK in Prague
  • Law, L’université Nancy-II, Nancy
  • Law, Master’s degree (Mgr.), Pf UK in Prague
  • International Territorial Studies (Bc.), FSV UK in Prague

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