How long must you keep invoices in Poland? (In practice, longer than 5 years)

You keep invoices, receipts and your tax records until the tax they relate to can no longer be collected. In Poland that is 5 years from the end of the calendar year in which the tax was due, not 5 years from the date on the invoice. For a sole trader, a 2026 invoice therefore stays in your archive until 31 December 2032, more than six years after you received it.

When do the 5 years start?

The rule comes from the Tax Ordinance (Ordynacja podatkowa, the general tax law):

• a tax debt expires 5 years after the end of the year in which the payment deadline passed (art. 70);
• anyone who keeps tax books must keep them, and the documents behind them, until then (art. 86);
• the VAT Act says the same for VAT records and invoices (art. 112).

The key word is “due”. Your income tax for 2026 (PIT, the personal income tax a sole trader pays) is not due in 2026. It is due with the annual return in 2027. So the clock starts later than most people think.

In 2028, 30 April falls on a Sunday and 1 May is a public holiday, so that deadline moves to the next working day, 2 May. The keep-until date does not change.

VAT is settled monthly or quarterly, so strictly each VAT period has its own clock. But the same invoices also support your annual income tax, so the simple rule is safer: keep the whole year until the end of the sixth year after it.

Watch out: the limitation period can be suspended or interrupted, for example by tax proceedings. If the tax office has opened a case about a year, keep that year’s documents until the case is over and the new date has passed.

Documents that affect later years

If you are still depreciating a laptop or a car, or deducting an old loss, the purchase invoice supports returns filed years later. The law sets no separate period for this. But the tax office can check any year that has not expired, and that invoice is the proof behind the deduction.

So it is sensible to keep those documents until the last year they affect has expired as well. Ask your accountant if you are unsure.

How long to keep other records

Invoices are not the only thing you keep, and the periods differ.

If you run a sp. z o.o. (a limited company), both the accounting rule and the tax rule apply, and the later date wins. For a 2026 financial year that follows the calendar year:

• the accounting rule for the books ends on 31 December 2031;
• the CIT return (corporate income tax) for 2026 is due by 31 March 2027, so the tax rule runs to 31 December 2032.

The approved financial statements are kept for at least 5 years from the start of the year after the one in which they were approved.

Does KSeF keep your invoices for you?

Partly. KSeF, the government’s national e-invoicing system, stores every structured invoice (faktura ustrukturyzowana, the XML invoice with a KSeF number) for 10 years from the end of the year it was issued. For those invoices, the VAT Act says the usual storage duties do not apply (art. 112aa). A 2026 KSeF invoice stays there until the end of 2036, well past 2032.

If the 10 years ever run out before the tax can no longer be collected, for example after a long tax case, you must keep the invoice yourself outside KSeF until the later date.

What KSeF does not hold:

• invoices from foreign suppliers (Google, Adobe, AWS, airlines abroad): they arrive by email and are yours to keep;
• receipts from the till, including (in 2026) receipts showing your NIP (tax number) up to 450 PLN;
• paper or PDF invoices from small Polish sellers who still issue outside KSeF: allowed until 31 December 2026 while the seller’s KSeF-obligatory invoices stay at or below 10,000 PLN gross a month (the same applies to your own sales invoices);
• bank statements, ZUS papers, contracts and your tax book.

Tip: you can download any KSeF invoice as XML or PDF from the free Aplikacja Podatnika KSeF 2.0, the Ministry of Finance’s KSeF app. Save a copy into the right month folder anyway. Then each month is complete in one place, and you do not need a login to answer your accountant’s questions. How KSeF works explains the logins.

Paper, scans and where to store them

The VAT Act asks you to keep invoices by settlement period, easy to find, and in a way that preserves their authentic origin, intact content and legibility until the tax expires (art. 112a).

Can you scan paper and throw it away? The law does not plainly say that a scan replaces a paper original. Until you have a clear answer for your case, keep the paper. If you want to go paperless, ask the tax office’s KIS helpline (Krajowa Informacja Skarbowa, the National Tax Information service) or your accountant first. Thermal receipts fade, so photograph them on the day and keep the paper in the month’s envelope as well.

Can they be kept abroad? A business based in Poland keeps its invoices in Poland. The exception is electronic invoices kept abroad in a way that lets the tax office reach them online (art. 112a). A cloud drive with servers abroad is fine on that condition. Wherever they are, when the tax office asks, you must give it immediate access, and for electronic invoices let it download and process them.

Where does the tax book live? Your tax book and its documents are kept at your place of business, or where your accounting office keeps them. That is the KPiR (księga przychodów i rozchodów, the revenue and expense book), or on ryczałt (the lump-sum tax) the revenue register. The tax office’s records also say who keeps your books and at what address; report a change within 7 days.

For foreigners: in practice you keep invoices in English or another language as they are. The law lets the tax office ask for a Polish translation, at your cost, during proceedings or an audit. The tax book itself is kept in Polish and in złoty.

What if your JDG is suspended or closed?

Neither suspending nor closing a JDG (jednoosobowa działalność gospodarcza, a sole trader’s business) changes the clock.

Suspended (zawieszenie działalności, pausing your business): you still keep every record, and you still file the annual return for the year you suspended in. Documents for earlier years expire on their normal dates. See suspending a JDG.

Closed: closing does not shorten any period. Keep everything until 5 years after the end of the year in which your last tax was due. If you close in 2026, your final annual return is due in 2027, so your 2026 documents stay until 31 December 2032. The list of business assets you draw up on the closing date is kept for 5 years as well. How to close a JDG covers the rest.

Tip: before you close, download your KSeF invoices and your bank statements into your own archive. Bank and system access can change once the business is gone; your folders will not.

Changing accountant without losing anything

Your documents belong to you, not to the accounting office. When you switch:

1. Give notice under your contract. Switching at the end of a year is easiest, because one office then closes the whole year.
2. Agree a written handover list (protokół przekazania): the tax book or registers, VAT records and the JPK files sent (the electronic files the tax office receives), the fixed-asset register, ZUS returns, payroll files and every paper original.
3. Remove the old office’s access (including in KSeF) and grant the new one’s.
4. Update your registration data within 7 days, because it names who keeps your books and where.

Keep your own copy of everything before the handover. If your archive already lives in your own folders, one folder per year and one per month inside it, changing accountant just means sharing the folders. Switching accountants has the full checklist.

What to do next

1. Write 31 December 2032 on your 2026 folder, and a keep-until date on every older year.
2. Check that each month holds everything: KSeF invoices, foreign invoices, receipts and the bank statement.
3. Keep paper originals until you have a clear answer on scans.
4. Before you close, change accountant or cancel a bank account, export what you need.

Komplet, our free Mac app, files each invoice into your own year and month folders under a readable name. Its “Prepare for my accountant” button packs a month into one folder and ZIP with every document, the statements and a summary, so the years you have to keep are already in order.