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End of September 2026 - important deadline ahead!

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Dear Clients,

We would like to remind you of the deadline 30 September 2026 which is important for the following topics.

 

Entitlement interest (“Anspruchszinsen”) for the 2025 tax returns

Assessments of income or corporation tax 2025 are subject to special interest, the so-called "entitlement interest". This affects the outstanding tax returns for 2025.

Assessments of income or corporation tax 2025 which are done by the tax office after 1st October 2026 will cause interest at an annual interest rate of approximately 3.53% (July 2026). This interest can be prevented by making an advance payment to the tax office no later than 30 September 2026 in the amount of the expected tax.

If you pay the outstanding income or corporation tax liability 2025 to the tax office, please note the relevant purpose in the online banking program (e.g. "K 1-12/2025" for corporate tax or "E 1-12/2025" for income tax) to ensure correct allocation of the payment.

If you have not yet sent us your documents for the 2025 tax return, please send them to us as soon as possible so that we can inform you of any additional tax payments. If you have already submitted the documents to us, no further action is required at this stage.

 

Reduction requests for corporate tax and income tax prepayments

Do your tax advance payments for 2026 exceed the tax liability resulting from the expected taxable income for 2026? If yes, you can apply for a reduction in advance payments for 2026 until 30 September 2026 at the latest.

Please let us know if you would like us to apply to the tax office for a reduction of your 2026 tax prepayments.

 

Reduction (increase) of the preliminary contribution basis of the SVS

The basis for calculating the provisional social security payments for the self-employed (SVS) is the “provisional contribution basis”. This “provisional contribution basis” is calculated on the income from the third preceding calendar year.

Is the final contribution base in the current year 2026 likely to be lower than the provisional contribution base? Then an application can be made to reduce the provisional contribution basis. In this reduction request (an increase is also possible in order to prevent high back payments) the probable amount of the final contribution basis for the current year must be indicated. In mathematical terms this is the summary of the income plus the paid social security contributions. The SVS recalculates your contributions based on this forecast.

There is no deadline for this, and a reduction can be requested throughout the year. However, the reduction will only have an effect on the current year if it is requested by the 3rd quarter, i.e. by the end of September / beginning of October.

Please get in touch with us if you need our support.

 

Apply for input tax refund from EU member states by 30.9.2026

Austrian entrepreneurs who purchase supplies or other services abroad can reclaim the invoiced foreign input tax under certain conditions. The deadline for the refund of input VAT for 2025 from EU member states is 30 September 2026. Applications must be submitted via FinanzOnline in Austria for entrepreneurs based in Austria.

As possible error messages are only transmitted with some delay, we recommend submitting the applications a few days before the deadline.

The deductibility of input tax depends on the regulations applicable in the respective EU member state. As a rule, invoices with an assessment basis of more than EUR 1,000 or fuel receipts of more than EUR 250 must be scanned and attached to the application as a PDF file. Applications submitted during the year must include input tax of at least EUR 400. If an application relates to an entire calendar year or the last period of a calendar year, the refund amounts must be at least EUR 50.

We will be happy to help you submit your input tax refund application.

 

Deadline for disclosure of the annual financial statements as of 31.12.2025

The nine-month period from the balance sheet date applies to the disclosure of the annual financial statements for submission to the commercial register. For a financial year that corresponds to the calendar year, i.e. with a balance sheet date of 31 December 2025, the annual financial statements must therefore be submitted electronically to the commercial register by 30 September 2026 at the latest. No deadline extensions are possible. Late submissions automatically result in penalties.

 

Best regards

Vienna, August 2026

Casapicola & Gross Steuerberatungs GmbH

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