---
title: Can You Combine EU Grants with Other Funding Sources? A Guide to Blended Project Financing
description: Blue economy funding is peaking in Europe. Multiple EU calls are open now, offering up to 100% grants for marine and coastal innovation.
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---

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# Can You Combine EU Grants with Other Funding Sources? A Guide to Blended Project Financing

- October 14, 2026

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**Summary:** Companies rarely finance a major project from one source. EU grants can often be combined with company capital, bank loans, private investment and national support, but with limits: the same cost cannot be funded twice, and state aid rules cap the total public support a project can receive. This article explains how the pieces fit together and how to plan a realistic funding mix.

## Why companies should look beyond a single financing source

When a company plans a significant investment, the first question is usually where the money will come from. The answer is rarely one source. Grants cover only part of a project's cost, loans must be repaid, and investors expect a return and often a share of the company.

Each source has its own purpose, timing and conditions. A financing strategy that uses several sources can lower the burden on any single one, reduce dilution, and make a project feasible that would not work on one source alone. It also forces an early, honest look at the budget.

## How EU grants differ from loans and private investment

An EU grant is non-repayable funding for a defined project. You do not give up shares, and you do not pay it back, provided you carry out the project and report correctly. In return, grants are competitive, tied to the call's topic and rules, and usually reimburse only a share of eligible costs. Under Horizon Europe, innovation projects are typically funded at up to 70% of eligible costs, while research projects can reach up to 100%.

A bank loan provides money quickly and keeps ownership intact, but it must be repaid with interest and often requires collateral. Private investment (venture capital or business angels) brings capital and expertise but means dilution and investor expectations on growth and exit.

Some EU instruments blend these logics. The EIC Accelerator, for example, can combine a grant with an equity investment from the EIC Fund. And EU-backed guarantees and loans, such as InvestEU products delivered through financial intermediaries and EIB financing, address later stages where grants are less suitable.

## Can EU grants be combined with national funding or private financing?

Often yes, within limits. Because EU grants rarely cover 100% of costs, the remaining share is typically carried by the company's own contribution, a loan, an investor or national support. For Horizon Europe innovation actions, the company's own share generally has to come from its own resources or private sources. Where the EU rate is lower than the maximum, national, regional or other EU funding may in principle fill the gap, provided state aid rules are respected.

The key principle is the ban on double funding: the same cost cannot be charged to two funding sources. Splitting costs between two projects is acceptable if each cost item is genuinely and separately attributable. Declaring the same expenses or working hours twice is not, and auditors can reject such costs or demand repayment.

## Understanding co-financing requirements and eligible costs

Co-financing is the part of the project you pay yourself or through other sources. If a grant covers 70% of eligible costs, the other 30% (plus any non-eligible costs) must come from somewhere else.

Two details catch many companies out. First, only eligible costs count, and eligibility depends on the programme: typically personnel, equipment, subcontracting and some overheads, incurred within the project period. Costs before the start date or grant signature generally do not qualify. Second, grants are often paid in instalments or after costs are incurred, so cash flow matters. A bridge loan or internal reserves may be needed before payments arrive.

Plan the budget by cost line, not just in total. For each major cost, define which source covers it.

## EU state aid rules and restrictions on combining funding

State aid rules limit how much public support a company can receive for the same costs. Money from EU-managed programmes such as Horizon Europe is generally not treated as state aid, but national or regional money, including EU funds that national authorities distribute, often is. When you combine public sources, the total support for the same eligible costs must stay within the allowed aid intensity.

Under the General Block Exemption Regulation (GBER), aid can be combined with other aid for the same costs only within the respective aid intensity limits. Smaller "de minimis" aid has its own ceiling, and earlier de minimis support, including support received by related companies, reduces what you can still receive. If a new grant would exceed the ceiling, it cannot be awarded in part.

The practical rules: map each funding source to specific costs, check whether each is state aid, calculate the combined intensity, and track what you and related companies have already received. The exact limits depend on the scheme and your company's size, so confirm them with the funding authority or an advisor.

## Examples of projects that may benefit from a diversified financing strategy

These illustrative examples show how the pieces can fit together; they are not guarantees of eligibility.

- **An innovative energy technology moving to demonstration.** A Horizon Europe innovation grant could cover up to 70% of eligible costs, the company funds its share from own capital or a private investor, and a bank loan helps bridge cash flow between instalments.
- **A deep-tech scale-up.** The EIC Accelerator combines a grant with equity, which can attract additional private investors who see the public evaluation as validation.
- **A production investment with a regional dimension.** A national or regional investment scheme covers part of the equipment, a bank or EIB-backed loan finances the remainder, and company funds cover non-eligible costs, with state aid limits checked across all of them.

## How to evaluate the right funding mix for your next investment

Start with the project and its budget, then ask four questions. What does each cost line need, and what is eligible under each possible source? How much can the company contribute from its own resources? What is the timing, and when does cash come in versus go out? And do the rules allow these sources to be combined for the same costs?

A useful mix is one you can actually execute: realistic rates, realistic timing, and a plan for the share no grant will cover. Understanding the options before you commit helps avoid surprises, such as discovering late that two sources cannot fund the same item.

At OFAP, we help companies identify relevant EU funding opportunities and assess how they could fit into a wider financing strategy.

**Planning a major investment?** Understanding your financing options early can help you build a more realistic and sustainable project budget. To talk it through, get in touch with Tomi Räsänen or Pirkka Junes at OFAP

 

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