Forschungszulage & Corporate Tax Return: Key Facts

From 2026, the allowance will become even more attractive for many companies—especially due to a higher assessment base (up to €12 million) as well as a flat-rate overhead-/operating cost component (20%).

Why is Forschungszulage so attractive—especially for corporate income tax?

Forschungszulage (public funding) is one of the most straightforward ways to financially support research and development (R&D)—regardless of industry, company size, or legal form, as long as you are tax liable in Germany and have an eligible R&D project.

What makes it so strong:

• Offset against corporate income tax (directly reduces the payment) or payout if there is no/too low tax burden
• Retroactively applicable (up to 4 years)
• Tax-free funding (as a tax refund / offset)
• From 2026 even more attractive for many companies (e.g., higher assessment base, flat-rate overhead)

You can also find more fundamentals and practical know-how at zeitmaker.com.

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Forschungszulage & corporate income tax return (Körperschaftsteuererklärung): The process (clearly explained in 3 steps)

If you search for "forschungszulage körperschaftsteuererklärung", in practice it almost always comes down to this process:

1) BSFZ application: have the project certified

First, you apply for the certification of your R&D project's eligibility in the portal of the BSFZ (Bescheinigungsstelle Forschungszulage).

Official point of contact: BSFZ portal via the federal government's central page:

• forschungszulage.de (BSFZ)

2) Application for assessment with the tax office (Finanzamt)

The BSFZ certificate alone does not yet lead to a payout/offset. You then submit the application for assessment with the tax office. Only then is the amount assessed and offset against the next corporate income tax assessment—or paid out.

3) Accounting + corporate income tax return (entry)

Important: Forschungszulage (public funding) affects the corporate income tax return indirectly, because it is usually already reflected in the annual financial statements.

Typical core point:

• Recognition in the P&L under "other operating income" (depending on timing and accounting logic)

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Where do I enter Forschungszulage in the corporate income tax return (Körperschaftsteuererklärung)?

In practice, Forschungszulage (public funding) is recorded in the corporate income tax return primarily in Appendix WA/12 (Forschungszulage) (e.g., around lines 41–44—depending on the current form version).

If the assessment notice (Festsetzungsbescheid) is not yet available, a solution via "Further information" (Appendix WA) may be useful depending on the case, so that the offset does not slip into the wrong assessment period.

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Forschungszulage corporate income tax (Körperschaftsteuer): What applies if I don't pay taxes?

A major advantage (and often underestimated): You can receive Forschungszulage (public funding) even if your company does not pay corporate income tax (e.g., in a loss year). If the allowance exceeds the tax debt—or if there is none—the difference is paid out.

Especially for start-ups, tech companies, and high-growth firms, this can be a real liquidity lever.

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What changes from 2026—and why is this relevant?

With the reforms from 2026, Forschungszulage (public funding) becomes even more interesting for many companies, among other things due to:

• higher assessment base (up to €12 million per financial year)
• flat-rate overhead (20% surcharge)
• continued offset against tax or payout

If you need guidance on which setup fits you (SME/not SME, cost types, application years), it's best to start with the overview at zeitmaker.com.

More details in the overview of changes 2024 and 2026.

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Guide: Correctly reflecting Forschungszulage in DATEV (practical checklist)

Step-by-step (conceptual, DATEV-ready)

1. File documentation cleanly

   • BSFZ certificate
   • Application for assessment / assessment notice
   • Evidence for R&D costs (e.g., personnel costs, contract R&D)

2. Recognize the income correctly in the annual financial statements

   • Forschungszulage (public funding) is typically posted as other operating income
   • Timing: depends on whether entitlement requirements/accounting recognition criteria are met as of the reporting date (when in doubt, seek tax advice)

3. Check the tax reconciliation

   • Ensure that recognition in the financial statements is processed consistently in the tax computation (P&L → tax balance sheet/reconciliation statement)

4. Corporate tax return: complete Appendix WA/12

   • Forschungszulage is reported in the return in Appendix WA/12
   • If the notice is not yet available: check whether information/applications are required so that the offset timing fits

5. Plausibility checks & supporting documentation function

   • In DATEV: take plausibility checks seriously (resolve error messages/review notes)
   • Document vouchers/notes so that the file is audit-proof

If you want specific instructions for your DATEV setup (which program, which client type, which financial statement/tax workflow), write to us via zeitmaker.com—then it can be aligned cleanly to the process. This guide follows the exact steps from Datev itself here: https://help-center.apps.datev.de/documents/1020617

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Conclusion: Forschungszulage + corporate income tax return = liquidity without "classic grant logic"

Forschungszulage (public funding) is an excellent option because it is tax-free, retroactively usable, and not dependent on profits. Anyone doing R&D should plan it strategically in the annual financial statements and the corporate income tax return (Körperschaftsteuererklärung)—especially with a view to its increased attractiveness from 2026.