Plan contractor hiring in Poland

For a Polish individual B2B supplier, the clean onboarding file starts with a CEIDG sole-proprietor record, a NIP on the contract and invoice, and an invoice issued under the contractor's own VAT and KSeF status. The buyer pays the business invoice; the contractor funds social and health contributions through ZUS and chooses any eligible income-tax method, including ryczałt od przychodów ewidencjonowanych, through its own tax filing. Those records help verify the supplier identity and pricing assumptions. They do not prove independence, so the working model still has to preserve business risk, autonomy and the absence of Article 22 direction.

Sources: Biznes.gov.pl, registering a sole proprietorship in CEIDG, ZUS, guide for people conducting business, Ministry of Finance tax portal, ryczałt for business income

If the line is crossed

Once Polish mandatory employment law reaches the work and the Article 22 conditions are present, the relationship is employment despite its civil-law or B2B label. The Labour Code also prohibits replacing an employment contract with a civil-law contract while preserving employment conditions. The safe operational response is to stop treating the invoice as a contractor invoice and move the arrangement onto an employment footing under the applicable law. Keep that status conclusion separate from Polish inspectorate service, collection and administrative enforcement, which need their own jurisdictional route for a buyer with no Polish establishment.

Sources: Sejm API, Labour Code consolidated text, Regulation (EC) No 593/2008, Rome I, Article 8

Faktura ustrukturyzowana w KSeF

Structured invoice in the National e-Invoice System

KSeF separates the structured invoice from the copy this foreign buyer receives. An in-scope Polish contractor issues the XML through KSeF, then provides a visualization or structured-data file outside KSeF in the form agreed with a buyer that has neither a Polish business seat nor a participating Polish fixed establishment. The QR code or direct link gives a two-step check: first basic identifying data and whether the document is in KSeF, then full retrieval after the access data required by the KSeF rules. Keep that code with the booked document and reconcile the copy to the accepted XML.

Issued by: The Polish contractor issues through KSeF and delivers the agreed outside-system form to the foreign buyer

Timing: Mandatory issuing began on 1 February 2026 for taxpayers whose 2024 gross sales exceeded PLN 200 million and on 1 April 2026 for other in-scope issuers. Through 31 December 2026, an otherwise covered small issuer can stay outside KSeF while gross monthly sales documented by covered invoices do not exceed PLN 10,000. The crossing invoice and later covered invoices enter KSeF. Article 106ni money penalties for KSeF failures enter into force on 1 January 2027, so 2026 remains a correction period before that sanction starts.

Sources: Ministry of Finance, scope and rollout of mandatory KSeF, Ministry of Finance, 2026 KSeF exception below PLN 10,000, Ministry of Finance, KSeF verification QR codes, Ministry of Finance, KSeF 2.0 handbook, part II, Sejm API, VAT Act consolidated text, Ministry of Finance, second stage KSeF rollout and 2026 sanctions

For a general B2B service, Article 28b usually places the supply where the business customer has its seat or the fixed establishment receiving the service. The fixed buyer has no Polish establishment, so the ordinary place of supply points outside Poland. If that customer is VAT-identified in another EU member state and the service is taxable there by the customer, the Polish contractor registers for VAT-UE and reports the service in summary information. A customer outside the EU does not create VAT-UE solely by being foreign. Check special service-place rules, then decide whether the invoice needs EU reverse-charge identifiers or third-country service wording.

Sources: Sejm API, VAT Act consolidated text

What an invoice has to show

• A working KSeF verification QR code or direct link on the outside-system copy

  For a foreign buyer, the QR code or direct link is the acceptance control on the copy supplied outside KSeF. It verifies basic invoice data and whether the document exists in KSeF; downloading the whole invoice can require additional access data, so the code is not the same as a Polish taxpayer inbox. A negative XML verification means no KSeF number was assigned and no system invoice was issued. Offline states can show two codes until submission status changes. Keep the working verification reference and return any copy that conflicts with the accepted XML.

  Sources: Ministry of Finance, KSeF verification QR codes, Ministry of Finance, KSeF 2.0 handbook, part II

• Reverse-charge wording and the right Article 106e exception

  For an outbound B2B service covered by Article 106a, Article 106e requires the words odwrotne obciążenie when the buyer accounts for VAT. Put the ordinary booking data behind that Polish decision: issue date, sequential number, supplier and buyer names, addresses and identifiers, service scope, net value and total due. Exempt sales, simplified invoices, special procedures and self-billing change the Article 106e list, so a missing VAT amount or identifier should be checked against the actual transaction before the invoice is rejected.

  Sources: Sejm API, VAT Act consolidated text

For this B2B services engagement, the Polish contractor bills by invoice and the payment date should be fixed in the contract or on the invoice. Polish statutory timing overrides that date only when the late-payment statute reaches both parties. The statute lists Polish entrepreneurs and entrepreneurs from EU member states, EFTA-EEA states and Switzerland. A foreign buyer inside that group should test long terms against the Polish statute. A buyer elsewhere should avoid treating the Polish 60-day rule, statutory interest or recovery costs as automatic until the governing-law route has been checked.

Sources: Sejm API, VAT Act consolidated text, Sejm API, Late Payment Act consolidated text

When invoices are settled

Where the Polish late-payment statute covers both parties, a private-sector payment term generally cannot exceed 60 days from invoice or bill delivery. A longer term survives only if expressly agreed and not grossly unfair to the creditor. If the debtor is a large enterprise and the creditor is an SME, the 60-day cap applies. The cited party list covers business buyers in the EU, EFTA-EEA states and Switzerland, plus listed Polish counterparties. For any other buyer, put the agreed due date in the contract and verify the governing-law route before relying on Polish statutory interest or recovery costs.

Sources: Sejm API, Late Payment Act consolidated text

The currency on the invoice

Polish law does not force the commercial price into PLN for this cross-border services invoice. The VAT Act controls the tax display: if a Polish VAT invoice states tax amounts in a foreign currency, those tax amounts also appear in PLN under the statutory conversion rule. That matters only when the invoice shows Polish VAT. Many general-rule B2B services are taxed where the foreign customer is established, so the contract can set the billing currency and the invoice review should ask first whether Polish VAT is shown.

Sources: Sejm API, VAT Act consolidated text

Using Polish residence as the employment-law answer

Residence is only the starting fact. A Poland-resident individual may habitually perform the work elsewhere, while an offshore contract cannot strip mandatory protections that would apply without that chosen law. Starting directly with Article 22 can produce the wrong answer in both directions. Record the country in or from which the person will actually work, check the fallback and closer-connection rules, then decide whether Article 22 controls the relationship.

Sources: Regulation (EC) No 593/2008, Rome I, Article 8, Sejm API, Labour Code consolidated text

Booking the KSeF rendering without checking its structured original

The foreign buyer receives an agreed copy outside KSeF, but the structured XML remains the system invoice. Preserve the QR code or direct link and use it to verify the invoice before booking it. The first scan confirms identifying data and whether the invoice is in KSeF; downloading the whole invoice can require additional access data. If XML verification failed, no KSeF number was assigned. Ask the contractor for a corrected KSeF invoice and a consistent copy instead of a second free-standing invoice outside the system.

Sources: Ministry of Finance, KSeF verification QR codes, Ministry of Finance, KSeF 2.0 handbook, part II

Demanding VAT-UE registration from every Polish contractor

VAT-UE belongs to a qualifying Article 28b service supplied to a VAT-identified business in another EU member state. A buyer outside the EU should not reject an invoice solely because that registration is missing. The reverse error is rejecting a domestically VAT-exempt Polish contractor who correctly holds VAT-UE for EU services. Fix the buyer's country, VAT identity and place-of-supply result before deciding which identifier and reporting duty support the invoice.

Sources: Sejm API, VAT Act consolidated text