Certificates of Residence & Withholding Tax Relief in Austria: What the BMF Update of 19 December 2025 means for foreign entrepreneurs
If you run a business outside Austria but receive Austrian-sourced income, one document can decide whether you benefit from a double tax treaty immediately—or whether cash gets stuck in a refund process: the Certificate of Residence. Austria’s Ministry of Finance (BMF) published an important update on 19 December 2025, addressing long-standing practical issues with the ZS-QU1 / ZS-QU2 forms and finally enabling a truly digital workflow.
Short summary
- Foreign “Certificates of Residence” can be accepted in specific cases—no apostille, but authenticity must be verifiable.
- ZS-QU1/ZS-QU2 can be completed and qualified e‑signed (EU/EEA) by both the recipient and the foreign tax authority—no physical originals needed.
- Simplified country arrangements remain in place (e.g., US IRS Form 6166).
1. Why Austria cares so much about residence documentation
In many cross-border situations, Austrian payers must withhold tax on payments to foreign recipients. Double tax treaties may reduce that burden—but only if the recipient’s treaty entitlement is properly documented. In practice, Austrian payers need reliable proof before payment. If documentation is incomplete, they often withhold by default or face liability.
For treaty relief at source, Austria generally requires the official forms:
- ZS-QU1 for individuals
- ZS-QU2 for legal entities
This is exactly where working with Heinz Kobleder – Tax Advisors, your Tax Adviser in Austria, helps foreign entrepreneurs build a clear, repeatable process.
2. The BMF update 2025: three changes you can actually use
2.1 Foreign Certificates of Residence—when the foreign authority refuses Austrian forms
A common real-life problem: some foreign tax authorities simply do not sign Austrian forms. The BMF now explicitly allows an alternative if it can be credibly shown that the foreign authority generally refuses to confirm residence on Austrian ZS-QU forms. In that case, a foreign Certificate of Residence may be attached to an otherwise fully completed ZS-QU form.
Key requirements:
- It must cover at least the relevant point in time when the Austrian withholding obligation arises.
- Authenticity must be verifiable (e.g., QR code or verification code/check).
- No apostille/over-legalisation required.
- Language must be German or English; otherwise a certified German translation is required.
2.2 Fully digital ZS-QU1/ZS-QU2 with qualified electronic signatures
The biggest step forward: ZS-QU forms can be completed electronically and signed with a qualified electronic signature—by both the foreign income recipient and the foreign tax authority. Crucially, the signatures must be issued in the EU/EEA so they can be validated.
Two practical pitfalls to avoid:
- Printing an electronically signed form is not enough—the signature must remain digitally verifiable.
- Hybrid solutions (one signature digital, the other handwritten) are not accepted.
2.3 Special country arrangements remain available
Austria continues to recognise simplified documentation routes for certain countries based on mutual agreements. The BMF lists, among others, Mexico, Thailand, Turkey, the USA (IRS Form 6166), Chile, Spain, Portugal, Belgium and Greece.
3. Practical checklist: how foreign entrepreneurs avoid delays and unnecessary withholding
Treaty relief is not “just paperwork”—it is a cashflow and risk management topic. With the new BMF rules, foreign entrepreneurs can streamline the process—if they implement it correctly.
Checklist used by Heinz Kobleder – Tax Advisors (Tax Adviser in Austria):
- Identify the payment type & treaty position: Decide whether relief at source is possible or a refund route is more realistic.
- Use the correct form: ZS-QU1 vs. ZS-QU2; complete all required sections. (service.bmf.gv.at)
- Go digital properly: If you use e‑signatures, use qualified e‑signatures consistently (EU/EEA) for both signatories.
- If the authority won’t sign Austrian forms: Attach a foreign Certificate of Residence and ensure verifiability and translation rules are met.
- Document retention: Keep the digital originals and verification evidence in a way that can be produced quickly in an audit.
- Timing: Aim to have documentation ready before payments are made to avoid unnecessary withholding.
4. How Heinz Kobleder – Tax Advisors supports you as a Tax Adviser in Austria
The 2025 BMF update creates new flexibility—but it also introduces technical requirements (verification, qualified signatures, consistent execution). Heinz Kobleder – Tax Advisors acts as your Tax Adviser in Austria by helping you:
- assess treaty entitlement and structure Austrian payment flows efficiently
- set up compliant ZS-QU processes (including digital signature workflows)
- coordinate documentation with Austrian payers and foreign tax authorities
- prepare refund strategies when relief at source is not feasible
If you plan to do business in Austria—or already receive Austrian-sourced income—getting the residence documentation right is one of the simplest ways to reduce friction, protect cashflow and keep Austrian withholding tax exposure under control. With Heinz Kobleder – Tax Advisors, you have a Tax Adviser in Austria who focuses on making the rules work in practice.
