The Dutch Tax Administration (Belastingdienst) has officially opened the application window for its new online SAS-HUBA initiative, offering taxpayers free, dedicated guidance for digital income tax submissions through May 15, 2026. The launch of the Self-Assessment System – Hulp Bij Aangifte (SAS-HUBA) marks a key milestone in the tax authority’s ongoing shift to fully digital public services, streamlining what has long been a cumbersome, in-person process for millions of filers.
Running from April 13 through May 15 2026, the program provides no-cost assistance to taxpayers completing both provisional and final income tax returns for the 2025 tax year. Prior to the digital transition, filers were required to complete submissions via in-person visits at physical tax office locations. Now, the entire process can be managed remotely online, a change designed to make filing faster, simpler, and far more transparent for all users.
Target groups for the SAS-HUBA support program include small business owners, self-employed workers, and wage earners claiming itemized deductions, all of which often face more complex filing requirements than standard filers. All guidance through the initiative is delivered entirely online at no cost to participants.
To access the platform and its support resources, users are required to complete pre-registration before starting their filing process. Tax officials have also issued preparatory guidance: all filers are advised to double-check personal and financial information before submission, while business owners are specifically reminded to have a fully itemized breakdown of annual income and expenses ready to reference during filing.
The digitalization of income tax filing is just one component of a broader, agency-wide modernization effort underway at the Dutch Tax Administration, which also includes ongoing work to restructure and reform the national tax system as a whole. April remains a critical month for tax compliance deadlines: provisional 2025 returns must be submitted no later than April 15, while the deadline for final returns is April 30. Beyond the online SAS-HUBA platform, the tax authority confirms that additional support remains available to taxpayers both through its digital channels and at in-person office locations across the country.