Cross-border success:
Stay on top of taxes,
law, and social security
Are you planning to grow your business internationally?
Operating in multiple countries means dealing with complicated tax and social security rules. We at Danube Tax know the pitfalls and will make sure you work legally and efficiently – in Austria, Slovakia, and Romania.
Tax challenges? Cross-border solutions!
Your business is growing internationally – we bring tax clarity.
Danube Tax founder and mastermind Klaus Krammer and his team know exactly what tax and legal hurdles international companies face – and will find the best solutions for your activities in Austria, Slovakia, and Romania.
How we support our clients
From Slovakia to Austria
Are you planning to set up a business in Austria, move your company headquarters, or handle a project properly? We help with taxes, social security, and legal matters – so you can focus on your business.
From Austria to Slovakia
Planning to open a business in Slovakia, move your headquarters, or carry out a project securely? We assist with tax, social security, and legal questions – so you can get started with peace of mind.
Our firm
Whether it's company formation, tax optimisation, or social security matters – we support businesses operating in Austria, Slovakia, or Romania (including cross-border). With expert knowledge and practical solutions, we create clarity and security.
more Information »Typical issues in cross-border business
- Tax registration duties abroad are not fulfilled.
- Double taxation is not identified in time.
- Uncertainty about when a permanent establishment is created.
- Foreign VAT rules are overlooked.
- Social security obligations are misjudged.
- Minimum wage laws and registration duties for posted workers are ignored.
- Invoices are incorrect or incomplete.
- Car taxes and registration duties are missed.
- Contracts lack clear tax and legal clauses.
- Official registrations are delayed or missed entirely.
- Payroll taxes abroad are miscalculated or incorrectly paid.
- Tax benefits and grants are not used.
- Tax residence changes and deregistration duties are unclear.
- Tax audits are not properly prepared.
- Legal differences between countries are not considered.
How we secure your tax and legal future
- We handle your tax registrations abroad professionally.
- We avoiddouble taxation and find optimal tax solutions.
- We identify permanent establishment risks early and manage them.
- We apply VAT rules correctly and optimise them.
- We clarify social security obligations and prevent double payments.
- We ensure correct implementation of minimum wages and registration duties.
- We issue invoices in line with legal requirements.
- We check car taxes and registration obligations on time.
- We draft contracts with clear tax and legal terms.
- We make sure registrations with authorities are done on time and in full.
- We calculate and pay foreign payroll taxes correctly.
- We help you make the most of tax benefits and subsidies.
- We guide you through tax residence changes professionally.
- We prepare and accompany you through tax audits.
- We check and comply with legal requirements in every country.
About Danube Tax & founder Klaus Krammer
Klaus Krammer & Danube Tax – your partner for cross-border tax advice and Austrian tax matters.
International business comes with tax challenges. Danube Tax helps companies avoid tax traps, prevent double taxation, and structure their operations effectively.
Behind the firm is Klaus Krammer, an experienced tax advisor with deep expertise in international tax law. He offers tailored solutions, especially for companies from Slovakia or Romania looking to expand into Austria.
Whether it's company formation, permanent establishments, social security, or VAT – Danube Tax ensures your operations are legally sound and tax-optimised. Freelancers and private individuals planning to move their tax residence also receive expert support.
Klaus Krammer and his team provide the security your business needs, so you can fully focus on your success.
Do you have questions or want to get to know us? Send us a message today!
We look forward to hearing from you and will get back to you as soon as possible!