Lump Sum Reporting in Horizon Europe:
What You Need to Know

Managing a Horizon Europe project under lump sum funding can simplify financial administration, but it requires a different mindset and approach compared to traditional cost-based grants. Instead of tracking invoices and expenses, project coordinators and beneficiaries must focus on demonstrating the proper completion of work packages and ensuring compliance with the European Commission’s (EC) technical and reporting framework.

While lump sum funding reduces financial reporting requirements, it also shifts the main risk from cost justification to implementation: If activities are not completed as agreed, funding my be reduced regardless of actual costs incurred, so understanding how reporting works in practice, is therefore essential for a smooth project implementation.

Below we outline the key principles of lump sum reporting, common challenges and practical considerations for ensuring a robust financial and technical reporting process.

Understanding Lump Sum Reporting

Lump sum funding in Horizon Europe shifts the focus from detailed cost tracking to ensuring that work packages are fully completed as agreed in the Grant Agreement. Payments are made based on completed work packages, not on actual incurred costs. For beneficiaries, this means that planning, execution and documentation become critical throughout the project lifecycle.

One common misconception is that lump sum projects are easier to manage simply because financial reporting is lighter. In practice, the challenge moves to demonstrating that each work package has been implemented in line with the Description of the Action (DoA) and approved project structure.

During reporting, beneficiaries must indicate the completion status of each work package. These are typically declared as:

• Completed – Fully executed according to the project’s Description of Action (DoA).
• Not Completed – Ongoing work that will be reported in the next period.
• Partially Completed – A portion of the work is done, and a proportional payment may be granted at the final reporting stage.

Important Correction

Interim payments do not allow for partially completed work packages, partial payments can only be requested at the final reporting stage, provided a justification is submitted.    ​

Payments Based on Activities, Not Results

A key distinction of lump sum funding is that payments are not linked to research outcomes but to the completion of specific activities, deliverables and milestones.

For project coordinators and beneficiaries, this means that:

• The focus should be on executing the planned activities rather than proving financial expenditures.
• Deliverables and milestones should be well-documented and aligned with the approved project plan.
• If any deviations occur, they must be justified in the technical report to avoid funding reductions.   ​

Financial Reporting Without Cost Tracking   

One of the biggest advantages of lump sum funding is the elimination of financial cost tracking. Beneficiaries do not need to submit invoices, timesheets, or personnel cost breakdowns. Instead, financial reports are automatically generated based on work packages marked as "Completed"​.

While this significantly reduces administrative burden, it also places greater emphasis on internal project monitoring. Beneficiaries must ensure that activities are carried out and documented in a way that clearly demonstrates the completion of each work package in line with the Grant Agreement.  

What Happens If a Work Package Is Not Fully Completed?

In practice, not all work packages progress exactly as initially planned. Delays, technical challenges, or external dependencies can affect implementation. In lump sum projects, however, the financial implications of incomplete work packages must be carefully considered.

If a work package cannot be fully completed by the final reporting period, there are two possible outcomes:

1. Partial Payment: If a portion of the work has been properly completed and justified, the EC may approve a proportional payment instead of rejecting the entire work package​
2. Grant Reduction: If a work package is significantly incomplete and the deviations are not justified; the EC may reject funding for that work package​.

Importantly, the assessment is not automatic. Beneficiaries are typically given the opportunity to provide explanations and supporting arguments before a final decision is taken. This makes clear documentation and transparent communication throughout the project essential.   

How Do Amendments Work in Lump Sum Grants?   

Amendments in lump sum projects follow the standard Horizon Europe amendment procedure, but certain limitations are particularly relevant in this funding model.

Work packages that have already been completed and paid cannot be reopened or amended retrospectively. This reinforces the importance of ensuring that the Description of the Action is realistic and internally aligned from the outset.

In addition, budget reallocations between work packages or beneficiaries require a formal amendment. While lump sum funding removes detailed cost reporting, it does not provide unlimited flexibility in redistributing funding across the project structure.

For coordinators, this means that strategic planning at proposal stage, especially in defining work packages and allocating lump sum amounts, remains critical, as structural changes later in the project may be constrained.