E-commerce Store Terms and Conditions in 2026 – Unlawful Clauses That Most Frequently Cost Entrepreneurs Money

An online store's terms and conditions form the legal foundation of every e-commerce transaction. Although many sellers treat them merely as a formality and copy templates obtained from unreliable sources, unreflective copying of provisions carries immense financial risk. The Office of Competition and Consumer Protection (UOKiK) continuously monitors the digital market, drawing severe consequences for entities using provisions that violate consumer rights.

Practice shows that illegal terms in regulations arise not from a desire to deceive the buyer, but from ignorance regarding the evolution of regulations protecting consumers and sole proprietors with consumer rights. Learn about the most common prohibited clauses that can expose your e-business to severe financial penalties.

What Is an Unlawful Clause and What Consequences Does It Carry?

An abusive (unlawful) clause is a provision in a contract concluded with a consumer that has not been individually negotiated with them, and shapes their rights and obligations in a manner contrary to good customs, grossly violating their interests. In e-commerce, where the contract is of an adhesive nature (the customer accepts ready-made terms and conditions), almost every provision not negotiated individually is subject to assessment for abusiveness.

The use of abusive clauses causes the given provision to not be binding on the consumer by operation of law. Furthermore, the President of UOKiK may consider the use of such provisions as a practice violating collective consumer interests, imposing a financial penalty on the entrepreneur of up to 10% of the turnover achieved in the financial year preceding the year the penalty is imposed.

The Most Common Unlawful Clauses in E-Store Terms and Conditions

Analytics efficiently reveals recurring error patterns in e-commerce regulations. Provisions that most frequently generate legal risk include:

Limiting liability for delivery of goods: provisions making the acceptance of a complaint conditional on writing a damage report in the presence of the courier, or shifting responsibility for damage to the shipment onto the carrier. By law, the seller is liable for the risk of accidental loss or damage to the item until it is handed over to the consumer.
Modifying the rules of the right to withdraw from the contract: requiring goods to be returned in their original, undamaged packaging, demanding the attachment of a receipt under penalty of refusal to accept the return, or deducting fixed administrative fees. The consumer has the right to unpack and test the item within the limits of ordinary management.
Shortening or modifying complaint deadlines: introducing own requirements regarding the deadline for reporting non-conformity of goods with the contract, or reserving arbitrary time to consider a complaint (the law imposes a strict deadline of 14 days to respond).
Improper judicial jurisdiction: provisions indicating that all disputes will be resolved exclusively by the court having jurisdiction over the seller's registered office. The consumer has a statutory right to bring the case to the court having jurisdiction over their place of residence.

Sole Proprietors with Consumer Rights – What Do Sellers Forget About?

Protection against unlawful clauses includes not only natural persons making private purchases, but also natural persons running a business (sole proprietorships/JDG), when they enter into a contract directly related to their business activity, but not having a professional character for them.

The mistake of many e-stores is excluding consumer rights towards all entities providing company details and a NIP (tax identification number). The terms and conditions must clearly and precisely take into account the non-professional status of the buying sole proprietor, granting them the right to withdraw from a distance contract as well as protection against abusive provisions.

How to Safely Update Online Store Terms and Conditions?

Properly drafted terms and conditions should be concise, understandable, and tailored to the specifics of the products sold (e.g., digital content, bulky goods, subscription services). To avoid critical errors, it is worth regularly submitting the document to a legal audit.

When introducing changes to the terms and conditions, remember to properly inform existing users (e.g., account holders of regular customers) with appropriate advance notice, and to archive old versions of the regulations along with the exact dates of their validity for the purpose of potential complaint disputes.

Audit of Regulations and E-Store Protection with Rulity Consulting

Creating a safe sales environment requires constant monitoring of court jurisprudence and decisions of the President of UOKiK. Rulity Consulting experts support e-store owners in creating safe, transparent, and fully legally compliant terms and conditions.

We conduct comprehensive legal audits of websites and purchasing processes, eliminate prohibited clauses, adapt stores to the requirements of consumer law, and represent entrepreneurs in proceedings before regulatory authorities. Secure your business against severe financial penalties and build an image of a safe e-store.