From 1 January 2027, financial institutions will be able to offer Personal Investment Accounts (Osobiste Konta Inwestycyjne, OKI). For investors, these accounts provide an alternative to Poland’s capital gains tax and an incentive to save for the long term. For financial market participants, they introduce a new reporting obligation to the Polish National Revenue Administration (Krajowa Administracja Skarbowa, KAS), based on daily asset valuations.
What are OKI accounts?
OKI accounts are investment accounts for individuals that offer an exemption from Poland’s capital gains tax, commonly known as the Belka tax. Instead, investors are subject to a tax of 0.85% on the average value of assets held in their accounts in 2027, but only on amounts exceeding the applicable tax-free allowances.
The allowance is PLN 25,000 for the safest asset classes, such as bank deposits denominated in PLN and savings treasury bonds. For assets listed on the Polish capital market, including shares and bonds denominated in PLN, the allowance is PLN 100,000. However, the combined tax-free allowance cannot exceed PLN 100,000.
Investors settle their tax obligations exclusively through Poland’s e-Tax Office (e-Urząd Skarbowy), based on data submitted by financial institutions.
New reporting obligations for financial institutions
By the end of February each year, financial institutions must submit an individual OKI information return (OKI-IN) to the relevant tax office for each client holding an OKI account. The first submission, covering the 2027 tax year, will be due by 29 February 2028.
The key data point in the return is the average value of assets held in each account. This figure is calculated using daily valuations throughout the year, taking account of deposits and covering three asset categories separately: two eligible for tax-free allowances and one not eligible for an allowance.
Any errors in these calculations directly affect the client’s tax return. If an institution submits an information return or correction after the deadline, it must also provide a copy directly to the client within 14 days.
How we support the process
We support OKI-IN reporting through VSoft Tax Reporting, a solution with an established track record in tax reporting for financial institutions, including PIT-8C reporting.
The solution provides:
- Data import with validation and error reporting.
- A database of clients, agreements and OKI accounts.
- Generation of individual OKI-IN information returns in XML format for each taxpayer.
- Identification of the competent tax office based on the taxpayer’s address.
- Qualified electronic signatures, submission to the Ministry of Finance and handling of Official Acknowledgements of Receipt (UPO).
- Individual and bulk corrections, with version history.
- PDF versions for clients where required by law.
Why VSoft?
Tax reporting is one of our core areas of expertise. For more than 30 years, we have been working with financial institutions, building a deep understanding of their systems, data and implementation processes.
The OKI module builds on a solution that is already deployed and running in production. This established foundation helps financial institutions implement the new reporting process faster and with greater confidence.
The implementation window is short: the first OKI-IN returns must reach the Polish National Revenue Administration by the end of February 2028. Let’s discuss your implementation plans now.
