Top 5 Costly Mistakes to Avoid When Opening a Company in Poland
1. Registering a Company with Only One Shareholder Owning 100%
This is by far one of the most expensive mistakes foreign entrepreneurs make.
A single-shareholder limited liability company (single-member Sp. z o.o.) creates mandatory Polish social security (ZUS) obligations for the sole shareholder.
Currently, this can exceed approximately PLN 2,200 per month, regardless of whether the company is profitable.
That means:
Around PLN 26,400 every year
Even during the startup phase
Even before acquiring your first customers
Many entrepreneurs spend their first year building products, developing marketing campaigns, finding clients, and attracting investors. Instead of investing this money into business growth, they unnecessarily spend tens of thousands of PLN on mandatory social contributions.
In many cases, proper ownership structuring before registration can legally avoid this situation.
Professional planning at the beginning often saves far more than it costs.
2. Forgetting to Submit Annual Financial Statements
Every Polish company has ongoing accounting and reporting obligations.
One of the most important is filing annual financial statements within statutory deadlines.
Failure to comply may result in:
Financial penalties
Court proceedings initiated by the National Court Register (KRS)
Personal liability of management board members
In serious or persistent cases, criminal liability under the Polish Accounting Act, including fines and potential restrictions of liberty
Many foreign entrepreneurs incorrectly assume that if their company had little or no activity, reporting is unnecessary.
That assumption can become very expensive.
Having a qualified accountant who monitors compliance deadlines is essential.
3. Ignoring Withholding Tax (WHT) on Foreign Digital Services
This is one of the least understood tax risks for international companies operating in Poland.
Many businesses purchase services from foreign suppliers such as:
Google Ads
Meta Ads
Canva
OpenAI
Software subscriptions
SaaS providers
Marketing platforms
Foreign consultants
Without obtaining the supplier's valid Tax Residency Certificate, Polish withholding tax (WHT) rules may apply in certain situations.
Depending on the type of payment and applicable tax treaty, the tax may range from 5% to 20% of the payment.
Businesses may also have reporting obligations, including forms such as CIT-10, where applicable.
Many entrepreneurs discover this only during a tax audit—when it is already too late.
Proper tax planning before making international payments can significantly reduce unnecessary tax exposure.
Interest for late payment begins accruing from the day following the due date, based on the statutory tax interest rate published by the Polish tax authorities.
If outstanding VAT liabilities remain unpaid, the tax office may initiate enforcement proceedings, including collecting funds directly from company bank accounts under applicable enforcement procedures.
Additionally, intentional or significant VAT non-compliance can expose management to liability under the Polish Fiscal Penal Code.
Maintaining accurate bookkeeping and paying VAT on time is essential for every business operating in Poland.
5. Treating Company Money as Personal Money
A limited liability company is a separate legal entity.
Its funds do not belong personally to the shareholders.
Many foreign entrepreneurs incorrectly assume they can freely transfer money from the company account to their personal account whenever they wish.
This is not how Polish corporate law works.
If you wish to receive compensation from the company, it should be based on an appropriate legal arrangement, for example:
Employment contract (Umowa o pracę)
Civil law contract (Umowa zlecenie)
Contract for specific work (Umowa o dzieło), where legally applicable
Resolution establishing remuneration for a management board member (Uchwała o wynagrodzeniu członka zarządu)
Choosing the appropriate structure depends on taxation, social security obligations, immigration status, and the nature of the work performed.
Foreign management board members should also remember that, after the initial six-month exemption period (where applicable under Polish regulations), continuing to perform board duties generally requires obtaining a Work Permit Type B or another appropriate legal basis authorizing such work.
Proper planning from the outset helps avoid immigration and compliance issues later.
Professional Planning Saves Money
Most of the mistakes described above are entirely avoidable.
Unfortunately, many entrepreneurs discover them only after:
Receiving tax assessments
Paying unnecessary ZUS contributions
Facing accounting penalties
Undergoing tax audits
Experiencing immigration delays
Paying lawyers to fix problems that could have been prevented
The cost of proper legal, tax, and immigration planning is usually a fraction of the cost of correcting mistakes afterward.
Build long-term credibility with European partners
Scale across multiple EU countries
Protect your business from unnecessary legal and tax risks
Focus your capital on growth instead of avoidable compliance costs
If your goal is long-term expansion into Europe, setting up your Polish company correctly from day one is one of the smartest investments you can make.