The IRS wants your tax return by April 15. We prepare it with you, in English.
US Tax Season 2026: Your US Tax Return, Prepared With You
Request a no-obligation quote
We treat your details confidentially.
Thank you. We'll be in touch with your quote.
Part of the guide US tax obligations as a European: when the IRS expects a return
- Your US tax return, professionally prepared
- Filed on time: for tax year 2025 by 15 April 2026, or by 15 October 2026 with an extension
- Professional representation frees up your time for other things
1Personal US tax return
As a US citizen or green card holder, you have to file a US tax return every year if you meet certain criteria, wherever you live. Our service makes sure your US tax return (including FBAR and the rest) reaches the right US tax authority on time, no matter where you are based.
Form 1040 or 1040-NR, handled in English.
2Want a US LLC that stays tax-free in the US?
Then our sister site zerotax.llc is the place for you. It covers the LLC for owners who live outside the US and do no business in the US: no permanent establishment, no US tax on the profit. This page is about the opposite: companies that really operate in the US, have a permanent establishment there and pay US taxes. Behind both is the same firm in Austin, Mount Bonnell Advisors.
3US tax returns for corporations
Corporations such as the C Corporation must also file a US tax return. Both active US corporations and non-resident corporations are required to prepare annual financial statements and file corporate income tax returns. The same applies to inactive US corporations and non-resident companies with no US activity: they too must file zero returns and simplified balance sheets.
Form 1120 and Form 5472 for your US corporation.
4US tax returns for partnerships
Partnerships, such as limited partnerships or multi-member LLCs, are also required to file a US tax return. This applies to active US partnerships and non-resident partnerships alike. Inactive US partnerships and non-resident businesses with no US activity must also file annual zero partnership returns with the IRS.
Form 1065 and K-1 for your LLC or LP.
- The US tax return for tax year 2025 was due April 15, 2026, or October 15, 2026 with an extension.
- US citizens and green card holders who meet certain criteria must file a US tax return every year, wherever they live.
- Even an exempt LLC that pays no US tax must file a return; for a single-member LLC, that is Form 5472.
- Corporations and partnerships must file too, even if they are inactive or not resident in the US.
How we help you
- Your US Tax ReturnForm 1040 or 1040-NR, handled in English.
- Zero Tax Return LLCPro forma Form 1120 and Form 5472 for the single-member LLC.
- Corporation tax returnForm 1120 and Form 5472 for your US corporation.
- LLC and LP Tax ReturnForm 1065 and K-1 for your LLC or LP.
- US taxes for US citizens abroadForm 1040, FBAR and Streamlined for US citizens living in Europe.
More on US taxes for individuals
All articles →
US tax obligations as a European: when the IRS expects a return Read more → 
Which countries don't take part in the CRS? The list, and the USA Read more → 
America takes your data. It gives very little back. Read more → 
Substantial Presence Test: when you file 1040 or 1040-NR Read more → 
Everything you need to know about Streamlined Filing Read more →