How to Calculate the ROI of Applying for Belgian Grants

Belgian grants are not free money. Every application costs time, energy, and sometimes consultant fees. A grant that offers €10,000 but requires 80 hours of preparation and a €3,000 consultant might not be worth pursuing for a company with a loaded hourly rate of €100. Meanwhile, a €200,000 innovation grant with a 40% success rate could be the best investment your company makes all year.

Most companies do not think about grant applications in ROI terms. They either apply for everything they find — wasting time on low-return applications — or they avoid grants entirely because the process "seems like too much work." Both approaches leave money on the table.

This guide gives you a practical framework for calculating whether a specific grant application is worth your time and money. It is the same logic that experienced grant consultants use when advising clients, and you can apply it whether you work with a consultant or do it yourself.

The expected value of a grant application is: (Grant Amount × Success Probability) minus (Total Application Cost). If this number is significantly positive, the application is worth pursuing. If it is close to zero or negative, your time is better spent elsewhere.

Grant Amount is the maximum you could receive if approved. Success Probability is your realistic chance of approval — not the program's overall approval rate, but your specific probability given your company profile, project quality, and track record. Total Application Cost includes internal time (valued at your loaded hourly rate), consultant fees if applicable, and any other preparation costs.

Example: a VLAIO O&O grant for €150,000 with a 35% success probability. Internal preparation time is 120 hours at €85/hour (€10,200). No consultant. Expected value: (€150,000 × 0.35) − €10,200 = €52,500 − €10,200 = €42,300. This is strongly positive — the application is clearly worth pursuing.

Example: a small regional grant for €8,000 with a 60% success probability. Internal time is 40 hours at €85/hour (€3,400). Expected value: (€8,000 × 0.60) − €3,400 = €4,800 − €3,400 = €1,400. This is barely positive. Unless the application is very straightforward, it may not be the best use of your time.

This is the hardest part of the calculation, and the most important. Overestimating your probability leads to wasted effort; underestimating it causes you to skip grants you should pursue. Here are practical ways to estimate it.

Start with the program's published approval rate if available. Many Belgian agencies publish statistics. VLAIO O&O projects have historically had approval rates around 30-40%. KMO Portefeuille has much higher rates since it is more of an entitlement program.

Adjust based on your company profile. Are you in a priority sector for the agency? Have you received grants before (track record matters)? Is your company financially healthy? Do you meet all stated eligibility criteria cleanly, or are you borderline on any requirement?

Adjust based on your application quality. If you have a strong technical team writing the proposal, adjust upward. If this is your first application and you are learning the format, adjust downward. If you are working with an experienced grant consultant, adjust upward by 10-20 percentage points — good consultants know what evaluators look for.

The consultant decision comes down to ROI as well. A typical grant consultant charges 5-15% of the granted amount as a success fee, or a fixed fee of €2,000-€10,000 depending on complexity. In exchange, they increase your success probability and reduce your internal time investment.

Self-apply when: the grant is under €25,000, the application process is straightforward (like KMO Portefeuille), you have done it before, or the program has a high baseline approval rate. The cost of a consultant would eat a large share of the grant.

Hire a consultant when: the grant exceeds €100,000, the application requires a detailed R&D project plan, you have never applied for this type of grant before, or the success fee is small relative to the expected grant amount. A consultant who costs €10,000 but increases your probability from 25% to 45% on a €200,000 grant adds €40,000 in expected value.

For grants between €25,000 and €100,000, the decision depends on your team's experience. If someone on your team has successfully obtained similar grants before, self-apply. If not, a consultant is usually worth the investment. Check BelGrant vs consultant for a detailed comparison.

For micro-companies (1-5 employees): focus on low-effort grants with high approval rates. KMO Portefeuille, Chèques-Entreprises, and similar programs offer small amounts (€5,000-€15,000) but require minimal preparation. The ROI is positive because the time investment is small. Skip complex innovation grants unless you have a strong technical co-founder who can write the application.

For small companies (5-25 employees): the sweet spot is mid-range grants of €25,000-€100,000. Programs like VLAIO development projects, Innoviris feasibility studies, and SPW consulting grants offer meaningful amounts with manageable application effort. Consider a consultant for your first application to learn the process.

For medium companies (25-250 employees): pursue the larger innovation grants (€100,000-€500,000+). At this size, you likely have team members who can dedicate time to the application, and the absolute amounts justify the effort. VLAIO O&O, Innoviris R&D, and EU programs like Horizon Europe become realistic targets.

Regardless of size, always check your options with the BelGrant assistant before spending time on applications. A quick eligibility check can save hours of wasted effort on programs where you do not qualify.

Hidden costs: application rework if rejected (many companies resubmit, doubling the time), project administration and reporting after approval (10-20% overhead on the grant amount), cash flow impact of paying costs upfront and receiving reimbursement months later, and opportunity cost of the project itself (resources committed to the grant project cannot work on other things).

Hidden benefits: knowledge gained through the application process (structuring your innovation strategy has value beyond the grant), credibility from being a grant recipient (useful for investor conversations and partnerships), and the discipline of project management that grant reporting enforces.

The net effect of these hidden factors is usually positive for larger grants and neutral to negative for very small grants. This reinforces the general rule: focus your effort on grants where the potential amount justifies the full cost of pursuing them.

Use this framework every time you consider a new grant application. Over time, you will develop an intuition for which opportunities are worth pursuing — but the calculation keeps that intuition honest.