Tax micro-account – when should you use it?

From 1 January 2020, taxpayers no longer need to check the tax office’s specific account number for each payment. The micro tax account is a fixed number for payments of selected taxes and charges. It consists of 26 characters, with the fixed part being 10100071222. A single account is used for PIT, CIT and VAT, but PCC and fines are paid into a different account. An error in the reference number or the type of payment usually requires clarification at the tax office.

What is a micro-tax account?

The micro-tax account has simplified day-to-day dealings with the tax authorities, as instead of having to find a separate account for each tax office, the taxpayer uses a single, fixed number. This solution operates on a ‘one taxpayer – one account’ basis. In practice, the same number is used for PIT, CIT and VAT payments, as well as for specified charges related to public-law settlements. It is no longer necessary to check whether the relevant tax office has changed following a move or a change of the company’s registered office.

The reform has been in force since 1 January 2020 and was intended to reduce the number of errors in bank transfers. Previously, it was easy to send money to the wrong tax office’s account, especially when a business owner operated in several locations or changed their residential address. Now, the micro-account number is assigned to the taxpayer or payer and does not depend on the location of the tax office. This is also important for people in full-time employment who earn extra income through a contract for services or run a small business alongside their salaried job.

The tax micro-account is used exclusively for payments. Refunds of overpayments and tax refunds are paid back into the bank account registered with the tax office, usually a personal current account or a business account. The number itself does not, therefore, function like a standard bank account into which you can receive transfers from business partners. It is rather a technical identifier used by the tax authorities to organise incoming payments.

The permanence of the number has another advantage. Changing your surname after marriage, moving to another town or transferring your business to a different tax office does not require you to set up a new account for PIT, CIT or VAT payments. The taxpayer retains the same micro-account for as long as they use the same tax identification number. This means that a single saved number can remain in online banking for years without needing to be updated every time address details change.

In practice, this system also saves time for accountants handling sole traders and companies. Instead of keeping track of numerous tax office bank accounts, a single correctly generated number is sufficient. This reduces the number of errors in transfers for employees’ income tax advances, in monthly settlements and in quarterly payments made by smaller companies. The number is easier to use than the old system of scattered accounts, which is why it has quickly become the standard for dealings with the tax authorities.

How is a micro-account number structured?

A micro-account number consists of 26 characters, and its format is fixed for all taxpayers. It always begins with the prefix 10100071222, which is a fixed part of the number regardless of the individual or company. The variable part is the taxpayer’s identifier – either their PESEL or NIP – entered in the appropriate place according to the generator’s rules. This ensures that each account can be assigned to a specific individual or business entity without mixing payments between different accounts.

For a natural person not carrying on a business, the PESEL is usually the correct identifier. An entrepreneur running a business, as well as a payer of taxes or social security contributions, usually uses their NIP. This choice is important right from the stage of generating the number, as an incorrect identifier may result in the payment being booked in the wrong place. The structure of the number itself does not change later on, regardless of changes to your residential address or the relevant tax office.

The generator checks the correctness of the identifier’s structure and the check digit, but responsibility for the data entered lies with the user. If someone enters someone else’s NIP or their own PESEL number instead of the company’s NIP, the system may generate a technically correct string of characters, but the payment will not go where it is intended. Before making your first transfer, it is advisable to check the number against the details used in tax and accounting records.

“An individual tax account, known as a ‘micro-tax account’, is a new simplification introduced by the Ministry of Finance and the National Tax Administration.”

— Jerzy Kwieciński, Minister of Finance, Investment and Development

A fixed prefix also helps to distinguish the micro-account from the tax office’s standard bank account. It is neither the tax office’s operational account nor a taxpayer’s private account. If someone tries to copy it out by hand without checking the structure, it is easy to mix up the positions of the check digits or the section corresponding to the identifier. In practice, it is safest to treat it as a technical code with a fixed structure, comprising a part common to all accounts and a personalised part assigned to a specific identifier.

“The tax micro-account generator operates round the clock, so you can check your number at any time and in any place, for example using a mobile phone or tablet.”

— Jerzy Kwieciński, Minister of Finance, Investment and Development

After checking it for the first time, you can save your number and use it later in online banking or accounting software without having to re-enter the entire sequence of characters each time.

Where can you check your tax micro-account number?

It is safest to use only the official tools provided by the Ministry of Finance and the e-Tax Office website. The generator available on the podatki.gov.pl website is used to check your individual tax account and operates 24 hours a day. You can also access it on your mobile phone or tablet, so you can verify the number just before making a payment or whilst working away from the office.

First, go to the micro-account generator. Then enter your PESEL or NIP number, depending on your tax status. Next, note down the generated number and save it in your online banking or the accounting system you use for tax transfers. Saving it this way saves time on future PIT or VAT payments and reduces the risk of typing errors when copying the digits by hand.

The e-Tax Office offers added convenience to those who wish to quickly check their micro-account number without having to switch between different websites. Once logged in, you can easily copy the number or change the identifier wherever the regulations allow you to use a different reference number to the one previously used by your business or for personal tax returns. This is particularly helpful when an entrepreneur has ceased trading and needs to re-establish the correct identifier.

You should avoid websites posing as official tools, as well as messages sent by email or text message containing a pre-generated micro-account number. Such messages may be used for fraud or lead to you entering a false account number when making online payments. The safe rule is simple – check the number yourself against a public source and only then copy it into your bank or financial accounting software.

ZUS IWA

“Submission of information to ZUS regarding data for 2024 to determine the accident insurance contribution (ZUS IWA)”

ZUS, 2024

A practical security test is quick to carry out. If the website does not belong to a public administration domain or requires you to download a file before displaying the number, it is better to stop the process and return to the official generator provided by the Ministry of Finance.

Which taxes and charges will you pay into the micro-account?

The tax micro-account primarily covers PIT, CIT and VAT. It also covers the specified charges listed by the Ministry of Finance, including PSD, KOP, POG, GHD, DSF, ALK, CUK, DRA and WRO. For many business owners, this means a single point of contact for managing the basic levies associated with business operations, as well as certain budgetary payments linked to public charges.

However, there are certain liabilities excluded from this system. Tax on civil law transactions (PCC), excise duty and penalty fines are paid into accounts other than the micro-tax account. The situation is similar for VAT on imports, VAT-14 and the tax card, as these payments are made in accordance with separate rules specified by the tax authorities for specific types of liabilities.

This distinction only makes sense if, before making a transfer, you know exactly what type of liability is to be settled. If you are paying a tax included on the list supported by the micro-account, you use the individual number assigned to you or your company. If the tax is not included in this list, you must check the current list of tax office accounts applicable to other public liabilities.

The micro-account also covers late payment interest arising from arrears relating to PIT, CIT and VAT, as well as reminder fees associated with these liabilities. This is important for those who are late with their payment by even a few working days after the statutory deadline or the deadline specified in their annual or monthly tax return. If someone attempts to pay civil law transaction tax (PCC) into a micro-account simply because it is also a tax, the transaction will be formally incorrect despite the amount being technically credited. The tax office may then have to spend a long time clarifying such a payment and manually transfer it to where it should have gone in the first place. This is where the difference between a standard bank transfer and a tax transfer most often becomes apparent, as the name of the form is almost as important as the account number itself.

PESEL or NIP – which identifier should you choose when opening a micro-account?

The choice of identifier depends on the status of the person settling tax or acting as a payer of contributions or employees’ advance payments. A natural person not carrying out business activity usually uses their PESEL number. An entrepreneur running a sole trader business generally uses their NIP when setting up a micro-account linked to their business.

The situation becomes more complex when a single person has several sources of income. An entrepreneur who is also in full-time employment may have personal tax returns based on their PESEL number, but their business-related PIT and VAT advance payments, as well as their obligations as a tax and social security contributions payer, are still processed via their NIP. The same applies to people earning income from private lettings alongside their business activities, as the source of income may differ from the identifier used when generating the technical account. For a partner in a general partnership, it is also important whether they are making advance payments relating to their own share or funds arising from the partnership’s own obligations. In such arrangements, a single error can cause funds to be misallocated between accounts, even though the actual amount remains the same.

Section 62(1) of the Tax Ordinance

“Pursuant to Article 62(1) of the Tax Ordinance, where a taxpayer has tax liabilities arising from various sources, any payment made shall be credited towards the tax in accordance with the taxpayer’s instructions”

Tax Ordinance

The cessation of business activity changes the taxpayer’s identification status. Upon closing a business, a natural person ceases to use their Tax Identification Number (NIP) as the basis for business operations and should generate a new micro-account based on their Personal Identification Number (PESEL). If they subsequently re-establish a business, they revert to the business-based option using the NIP. This means that one person may have two different identification numbers, but not simultaneously for the same legal role.

An example of an incorrect choice is often straightforward. A person runs a sole trader business (JDG), creates a micro-account using their PESEL number instead of their NIP, and pays an advance on behalf of the business. The payment may be recorded, but the tax office will need to clarify it, as the business’s records do not match those of the private individual. In such cases, the error rarely resolves itself automatically; most often, you will need to provide proof of the transfer and manually reconcile the data.

How do you make a transfer to a micro-account at a bank or post office?

The transfer is similar to a standard tax payment, but differs in terms of the recipient’s number and the details you need to enter. In online banking, select ‘tax transfer’ or the ‘payment form for the tax office’, enter your micro-account number and fill in the tax code, the tax period and the amount. If your bank has a ready-made template for payments to the tax office, do not change it to a standard domestic transfer, as it is easy to overlook the field for the period or type of liability. At the post office, the procedure is similar, except that instead of using an online banking portal, you fill in the tax payment form by hand.

The micro-account number consists of 26 characters and begins with the fixed prefix 10100071222. The next part depends on whether you’re entering your PESEL or NIP. A private individual not running a business usually enters their PESEL, whilst a business owner or tax payer enters their NIP. The generator checks that the identifier is correct, but it is the user’s responsibility to enter the correct number. If you confuse your PESEL with your NIP, or enter someone else’s identifier, the transfer may be directed to the tax office, but you will then have to clarify the matter and submit a request for the funds to be reallocated.

In online banking, the pre-filled tax form works best. After selecting the payment type, you enter the micro-account number, and the system usually also suggests the name of the tax office or the recipient’s details. When filing your annual tax return, the ‘reference’ field is sometimes left blank if the form already includes the liability identification, tax type and period. At the post office, it is a good idea to keep the proof of posting, as this will speed up the process of resolving any issues with the tax office should there be an error in the number or if the wrong reference code is entered.

When making a payment from abroad, the account number is provided in IBAN format, and if the bank requires a BIC or SWIFT code, enter NBPLPLPW. The transfer process itself does not change simply because the money is being sent from an account outside Poland. What matters is the correct account number and the taxpayer’s accurate identification details. When sending a payment from a foreign bank, it is advisable to check your own bank’s limits and the transfer processing time in advance, as a delay could cause problems if the payment is close to the statutory deadline.

The format for tax payments remains the same as before, and the Elixir transfer system is still in use. Only the recipient’s account number has changed. This means that those using accounting software or a company system do not need to learn a new procedure from scratch. You simply need to replace the tax office’s old account number with the micro-account assigned to the taxpayer or payer.

When making a payment from a bank, it is best to save the micro-account in your payee template straight away. This means that the next PIT, CIT or VAT payment will not require you to retype the entire number. If you run a business and also declare personal income, ensure the identifier remains consistent. Once you’ve closed your business, the micro-account linked to your NIP is no longer valid, and you’ll need to generate a new number using your PESEL. This is a minor technical change, but overlooking it can delay the payment being credited to your account.

The same rule applies at the post office and the bank – first the correct identifier, then the tax code and the tax period. If you are making a payment on behalf of employees or an advance payment as a tax withholder, you use your micro-account as a business owner or employer. When you pay personal tax as a private individual without a business, you use the number assigned to your PESEL. This order reduces the risk of errors in bookkeeping and minimises the need for subsequent visits to the tax office.

When is a micro-account insufficient and do you need to use a different account?

The micro-account primarily covers PIT, CIT and VAT, as well as selected charges specified by the tax authorities. It does not cover all public dues, so before making a transfer, you must distinguish between tax covered by the individual account and payments directed to the tax office’s account. Capital gains tax (PCC), excise duty, fines and VAT on imports are paid into accounts other than the micro-account. The same applies to the tax card and the VAT-14 form.

This distinction is of great importance for business owners and for those who settle several different tax obligations at the same time. A single entrepreneur may pay PIT on business income into the micro-account, whilst at the same time settling PCC or stamp duty via a separate bank transfer. If everything is paid into the same account number without checking the type of payment, the tax office may record the payment differently from what the taxpayer expected. In such cases, it may be necessary to re-post the payment or clarify the matter in person, providing confirmation of the transfer.

A micro-account is used solely for tax payments. Refunds of overpayments and taxes are returned to the bank account registered with the tax office.

In this case, there is another important point to note. The mere fact of holding a micro-account does not exempt you from the obligation to check the list of tax office accounts for other budgetary payments. Anyone paying a fine or a tax not covered by the micro-account scheme should use the appropriate account specified by the tax authorities. Otherwise, the money may end up in the wrong technical account and it will take longer to process it correctly.

A separate category comprises late payment interest and reminder fees relating to arrears in PIT, CIT and VAT. These items may be processed via an individual tax account, but only if they relate specifically to these liabilities. If someone mistakes the type of payment and enters the wrong transfer reference, the payment itself will not always settle the matter with the tax office.

What should you do following a change in your personal circumstances or the closure of your business?

Closing a business changes the way the taxpayer is identified in relation to the micro-account. An entrepreneur uses their Tax Identification Number (NIP) whilst running the business, but once the business is wound up, their Personal Identification Number (PESEL) becomes their identifier and a new account number must be generated. The old micro-account does not automatically disappear from online banking or accounting software, so it is easy to make a mistake when making the first transfer after closing the business.

The same problem arises for people who previously ran a business but now only declare private income. There is no need to register the micro-account itself with the CEIDG or update it as a separate bank account, as it is a technical account held by the tax authority. However, you must ensure that the relevant payment is still being processed under the NIP or has switched to the PESEL. For the tax office, this is not a mere formality, but information on how to account for the payment.

• If the business has been wound up, generate a new micro-account using your PESEL number.
• If you restart your business, revert to the account created using the NIP.
• If you are filing a joint tax return with your spouse, it is best to make the transfer to the account of the person listed first on the return.
• If you have several sources of income at the same time, check each tax liability separately rather than simply keeping one number on file without checking it.

Partners in a general partnership must take an even broader view than a sole trader. Each partner pays PIT advance payments from their business into their own micro-account, but VAT and the employer’s advance payments on employees’ wages are paid into the partnership’s account. This means two different levels of responsibility for a single type of business, and it is often here that mistakes occur when making the first independent transfer following a change in the company’s legal form.

It is also worth bearing in mind borderline situations involving married couples or individuals running a business alongside private letting. A change in the source of income alone does not always require a new tax identification number straight away, but a change in taxpayer status does. When an entrepreneur ceases to be an active business operator and begins to declare only private income, a new tax identification number ensures that future payments are processed correctly without the risk of them being recorded under the wrong category.

How can you avoid a payment being posted to the wrong account?

The most problems arise when money is paid into someone else’s micro-account or is sent using the wrong tax identification number. In such a situation, the tax office may request an explanation or record the funds differently from how the taxpayer intended. The error itself does not necessarily mean a loss of money, but it usually involves additional correspondence and the need to provide proof of the transfer to the relevant tax office.

In the event of an incorrect payment, a swift response is key. If the mistake is noticed immediately after the transfer is made, you can submit a request for a re-crediting more quickly and minimise the risk of late payment interest being charged. If the issue only comes to light after the payment deadline, the tax office will calculate the arrears together with interest based on the due date of the liability. This is particularly burdensome when there are several concurrent tax liabilities with different due dates.

In the event of arrears, the tax office allocates the payment according to the statutory order based on the earliest due date. If the taxpayer specifies a particular tax in the transfer reference or on the tax return, this information is relevant for the subsequent allocation of the funds. If no such specification is provided, or if the liability has already been settled, the money may be allocated to the oldest outstanding liability amongst all items visible to the tax office.

For those using online banking, a practical problem also arises when entering the reference number in the transfer template. A single digit entered incorrectly whilst copying is enough for the funds to go somewhere other than where they should. The safest approach is to paste the number without manually rewriting it each time, and to check it once more against the generated invoice and the correct tax identification number before confirming the payment.

Frequently asked questions

Sources

• https://podatki-arch.mf.gov.pl/generator-mikrorachunku-podatkowego
• https://www.podatki.gov.pl/mikrorachunek-podatkowy/
• https://www.gov.pl/web/kas/indywidualny-rachunek-podatkowy