Forschungszulage Retroactively: Fund Past Projects
Claim the Forschungszulage retroactively for completed R&D projects. Learn how far back you can go and what to consider when applying.
Many companies invest in new products, software, processes, or prototypes – but do not use the tax incentive because they associate "research & development" with large laboratories. What matters is: it is often about technological innovation with real risk and uncertainty – and that is exactly what the Forschungszulage under the Forschungszulagengesetz (FZulG) was introduced for (in force since 1 January 2020).
As the team at zeitmaker.com (with Erich Lehmann as a hands-on contact), we help companies classify innovation projects correctly, formulate them in an eligible way, and navigate the process in a structured manner.
The Forschungszulage is a tax-based research and innovation incentive in the form of a tax credit. It complements classic project grants and is designed to reach more companies – including those without the time for lengthy subsidy applications or who need to move quickly to market.
Important: the Forschungszulage is not a competition like many funding programmes – if the requirements are met, there is fundamentally a legal entitlement.
Essentially all companies subject to tax in Germany – regardless of:
Companies outside the profit zone can also benefit, because the allowance is offset against the tax assessment and any surplus can be paid out.
Eligible are projects that can be assigned to one of these categories:
In practice, experimental development is particularly common – i.e. the development of new or significantly improved products, processes, or services.
For a project to be recognised, typical characteristics must be present (simplified):
Not eligible are pure routine optimisations or "constructive adaptations" without a genuine innovation leap.
The amount of the Forschungszulage depends on the eligible expenditures. Typical components are:
Contract research: If a third party carries out the project on a commissioned basis, 70% of the remuneration (for the period after March 2024 and 60% before that) can be counted as eligible expenditure.
Besides the Forschungszulage, Germany has only few tax instruments that similarly directly incentivise innovation/investment. Those relevant in practice are primarily:
Context for the reader: When it comes specifically to technological innovation with risk/uncertainty, the Forschungszulage is Germany's central, nationwide uniform tax instrument – with a legal entitlement when requirements are met and the two-stage process (BSFZ + tax office).
If you want to know whether your project is more "routine development" or eligible innovation, the best starting point is a structured preliminary assessment.
A tax credit for companies that carry out eligible innovation/R&D projects – with a two-stage application process (BSFZ + tax office). If taxes owed are too low, it is also paid out.
No. The allowance is offset against tax, but any surplus can be paid out – which is why it is also relevant for start-ups.
Each project is reviewed individually in terms of content – however, multiple projects can be grouped together in a single application to the BSFZ.
The BSFZ certificate can be applied for before, during, or after the project. The application to the tax office is only possible after the end of the fiscal year in which the costs were incurred.
The BSFZ checks whether the project qualifies substantively as an eligible innovation/R&D project. The tax office then reviews the assessment basis and sets the allowance.
Yes. For contract research, 70% of the remuneration paid can be counted as eligible expenditure (subject to the statutory requirements).
Drop us a line about what's on your mind — we'll get back to you personally and without obligation.
Claim the Forschungszulage retroactively for completed R&D projects. Learn how far back you can go and what to consider when applying.
Apply for the Forschungszulage in just 4 calls — up to €4.2M per year. Legal entitlement, retroactive claims possible, 92% success rate.
Forschungszulage statistics 2026: success rates, industry breakdown, company sizes and regional data. Data-driven insights for your R&D funding decision.
Yes — software and AI projects qualify for Germany's R&D tax credit. Learn eligibility criteria, common pitfalls & how to apply successfully.