Only 3 weeks left! The 2025 tax return deadline is approaching

Time is running out: on 31 July 2026, the legal deadline expires for everyone who is obliged to file a tax return for the 2025 tax year and does so without tax advice. That is only 3 weeks away – and they can pass faster than you think.

But there is a simple solution that not only saves you stress, but also extends your deadline by almost a full year: becoming a member of CUCO Lohnsteuerhilfeverein e.V.

Who is affected?

You are obliged to file a tax return if, among other things:

• You and your spouse chose the tax class combination III/V or IV with factor.
• You received more than €410 in wage replacement benefits in 2025 (e.g. parental allowance, sickness benefit, short-time work allowance or unemployment benefit).
• You had additional income without wage tax deduction of more than €410 (e.g. from renting within the statutory limits).
• You were employed by several employers at the same time.
• An allowance was entered on your wage tax card.

Unsure whether you are obliged to file? Take a look at our article on the deadline for the 2025 tax return or contact us directly.

What happens if you miss the deadline?

Anyone who misses the 31 July 2026 deadline without good reason risks:

• A late surcharge of at least €25 per month started.
• The tax office estimating your tax basis – usually to your disadvantage.
• Unnecessary bureaucratic hassle and stress.

This does not have to happen!

The smart alternative: become a member and extend your deadline

As a member of CUCO Lohnsteuerhilfeverein e.V., you immediately benefit from an automatic deadline extension until 1 March 2027. That is almost a full extra year – without any separate application to the tax office.

And that is just the beginning. With a CUCO membership you receive:

• ✅ Professional preparation of your tax return by our advisors
• ✅ Year-round advice on all payroll tax matters
• ✅ Review of your tax assessment for errors
• ✅ Objection proceedings if the tax office makes mistakes
• ✅ Fair, socially graded membership fees – no hourly rates

Find out more about our services on our services page.

Act now – before it is too late

Three weeks until 31 July is tight. If you become a member now, we will take care of everything – and you will no longer have a deadline to worry about.

Note: To benefit from the deadline extension, your membership must be completed and your assignment received by us before the deadline of 31 July 2026. So do not wait too long!

Become a member now and put your tax return behind you in a relaxed way:

Join now | Arrange a consultation | Find a branch

Do you still have questions? Feel free to contact us – we will help you quickly and easily.