Can I Still Get Public Funding for Past Innovation Projects – or Is It Too Late?

TL;DR – Summary

Process Overview

• 1Eligibility of the project according to the Forschungszulage criteria
• 2Evidence and documentation that holds up even retroactively
• 3Correct application steps: first the certificate, then the tax claim

Yes – the Forschungszulage can also be applied for retroactively for innovation projects that have already been carried out (and in some cases even completed). The decisive factors are deadlines, clean project documentation, and correct classification under the Forschungszulagengesetz (FZulG).

Why This Article Matters

Many companies have been investing in innovation for years – often without knowing that they can claim a nationwide funding contribution after the fact. This is especially relevant when projects have already been internally "signed off," but the costs were real and the question today is: did we leave money on the table?

From my consulting practice (Erich Lehmann, dieforschungszulage.de), I regularly see this pattern: with completed projects in particular, "too late" is rarely the actual problem – the real issue is recognizing the opportunity too late. Anyone who checks in time can often still secure funding.

Is Retroactive Claiming Even Possible?

Yes. Under the Forschungszulage system, it is generally possible to apply for funding for past calendar years. In practice, a retroactive period of up to four calendar years is commonly cited – provided that the formal requirements are met and the project is eligible for funding. Cases where the innovation project was still active in the last completed calendar year are particularly straightforward to assess. If a project was fully completed some time ago, however, a more detailed individual review is usually needed (particularly regarding evidence and project demarcation).

Important: this is not about "some kind of project grant" – it's about the Forschungszulage as a tax-based incentive for innovation activities – nationwide, predictable, and not dependent on the budgets of individual funding programs.

What You Need to Understand (Without the Jargon)

For a past project to be eligible for funding, you essentially need three things:

Eligibility of the Project

The project must meet the Forschungszulage eligibility criteria. I deliberately use the word innovation, not just "R&D." The key factors are typically:

• Novelty (new knowledge or a significant degree of advancement)
• Uncertainty (technical or substantive risk – it could fail)
• Creative activity (not pure routine work)
• Systematic approach (planned, structured, traceable)

You can find more details in our guide on the requirements.

Evidence and Documentation

You need evidence that holds up retroactively:

• Costs (e.g. personnel costs, material costs, contract research)
• Time (hours worked by the employees involved)
• Content (what was developed? what goals were pursued?)
• Goal (what was the innovation objective?)
• Uncertainties (what technical or substantive risks were there?)
• Iterations (how did you proceed? what steps were involved?)

The further back a project lies, the more important clean documentation becomes. For very old projects, certain evidence may no longer be fully available – which can limit eligibility.

Correct Application Steps

The process has two stages:

1. Certificate from the Bescheinigungsstelle Forschungszulage (BSFZ)
2. Tax claim with the tax office (Finanzamt)

You can find the certification process via the official body: https://www.bescheinigung-forschungszulage.de/

Why the Forschungszulage Is a Particularly Good Option

In my view, the Forschungszulage is one of the most attractive innovation funding instruments in Germany, because it:

• does not need to be repaid (unlike many grants)
• works across industries for many companies
• can also be worthwhile retroactively for projects already completed
• typically faces far less "competitive pressure" than classic grant programs (you have a legal entitlement once the requirements are met)

My Recommendation (From Experience)

If you suspect that you had relevant innovation projects in recent years: check now. Retroactive opportunities are real – but they depend on deadlines and on whether you can still document your project solidly today.

A structured quick-check of your past innovation projects helps:

• Goal: what were you trying to achieve?
• Novelty/Uncertainty: was the project genuinely innovative or more routine?
• Iterations: how did you proceed? were there setbacks or adjustments?
• Costs/Time: what expenses were incurred? can these still be evidenced?

If you need support, start with an initial consultation at dieforschungszulage.de.