Grant Application Budget Template for Belgian SMEs

The budget is not just a formality in a Belgian grant application — it is one of the primary evaluation criteria. Granting authorities use the budget to assess whether the project is realistic, whether costs are justified, and whether the applicant understands what is being funded. An unclear, inflated, or poorly structured budget is one of the most common reasons for rejection or reduced funding across all Belgian grant programs.

A strong grant budget tells a story: it shows what activities are planned, what resources are needed, how much each activity costs, and how the total is financed. The budget must align perfectly with the project description. If your narrative says you will hire two researchers for 18 months but your budget shows three researchers for 24 months, the evaluator will flag the inconsistency.

This guide explains how to structure a grant application budget for Belgian programs, with practical guidance applicable to VLAIO, Innoviris, SPW, and federal programs. For help identifying which programs match your company before building a budget, use the BelGrant assistant.

Belgian grant budgets typically organize costs into standard categories. The most common categories across regional programs are: personnel costs, equipment and materials, subcontracting and external services, travel and subsistence, overhead (indirect costs), and other direct costs. Not every program accepts every category, and each program defines what counts as eligible within each category.

Personnel costs are usually the largest budget line. Most programs require you to calculate personnel costs based on actual gross salary plus employer social contributions, allocated proportionally to the time the person spends on the project. If a researcher works 50% of their time on the grant-funded project, only 50% of their full cost is eligible. Programs typically require timesheets or time allocation records as proof.

Equipment costs may be eligible in full (for equipment purchased exclusively for the project) or as depreciation over the project period (for equipment also used for other purposes). The depreciation method varies by program — VLAIO and Innoviris each have their own rules. Always check whether the program covers the purchase price or only the depreciation amount for the project duration.

Subcontracting covers external services such as specialized testing, consultancy, clinical trials, or IP advice. Most programs cap subcontracting at a percentage of total eligible costs (often 30–50%) to ensure that the core work is performed by the applicant. If you plan to subcontract a large share of the project, justify why the expertise cannot be developed internally.

Co-financing is the portion of project costs that you fund from your own resources. Belgian grants never cover 100% of project costs. The grant typically covers between 25% and 70% of eligible costs depending on the program, the type of activity, and your company's size. The remainder is your co-financing obligation.

To calculate co-financing: determine total eligible costs, multiply by the grant percentage to get the maximum grant amount, and subtract this from total eligible costs to get your minimum co-financing. For example, if eligible costs are €200,000 and the grant covers 50%, you receive up to €100,000 and must finance at least €100,000 from your own resources.

Co-financing must be real and verifiable. It can come from your company's own cash, revenue, or a confirmed bank loan. Some programs accept in-kind contributions (such as the value of your own employees' time allocated to the project) as part of co-financing, while others require cash contributions. Read the program guidelines carefully to understand what counts.

A common mistake is underestimating the cash flow impact of co-financing. Many grants reimburse costs only after they are incurred and reported. You may need to pre-finance the entire project and wait months for reimbursement. Make sure your company's cash flow can absorb this timing gap. See our step-by-step application guide for the full application process.

Overhead costs — also called indirect costs — cover the general operating expenses that support the project but cannot be directly attributed to it. This includes office rent, utilities, IT infrastructure, administrative staff, and general management time.

Belgian grant programs handle overhead differently. VLAIO typically uses a flat-rate overhead percentage calculated on top of direct personnel costs. Innoviris may use a different percentage or require detailed justification of indirect costs. SPW programs in Wallonia have their own overhead rules. Horizon Europe uses a standard 25% flat rate on direct costs.

Never inflate overhead to increase the grant amount. Evaluators review overhead calculations and will reduce amounts that appear excessive. Use the standard rate specified by the program, or if a standard rate is not defined, use a rate consistent with your company's actual indirect cost structure. If your company has audited financial statements, base your overhead rate on those figures.

For VLAIO applications, pay special attention to the personnel cost calculation. VLAIO provides specific guidance on how to calculate eligible personnel rates, including which components of salary and social contributions are included. Use the VLAIO cost calculation template if one is provided. Include only the project-related proportion of each person's time, and ensure that the allocation percentage is realistic — 100% allocation to a single project is unusual and may be questioned unless the person is hired specifically for the grant.

For Innoviris, the budget structure may differ depending on the specific call. Innoviris evaluators pay close attention to the balance between budget categories. A budget where 80% goes to subcontracting will raise questions about whether the applicant is genuinely performing the work. Similarly, an equipment budget that exceeds personnel costs may seem inconsistent with an R&D project that should be driven by human capital.

Both agencies expect the budget to match the work plan precisely. If your work plan has four work packages, your budget should be broken down by work package. Each activity described in the narrative should have corresponding budget lines. Unexplained budget items without narrative support will be cut during evaluation.

Finally, build in a small contingency buffer (typically 5–10%) where the program allows it. Grant projects rarely unfold exactly as planned, and having a modest buffer for unexpected costs prevents you from needing to renegotiate the grant agreement mid-project. For a review of your application readiness before submitting, use the pre-application checklist.

Mistake 1: Including non-eligible costs. Every program has a list of excluded costs — typically marketing expenses, general business operations, standard office equipment, and costs incurred before the project start date. Including these in your budget signals that you have not read the program guidelines.

Mistake 2: Round numbers everywhere. A budget where every line item is a round thousand-euro figure (€50,000, €30,000, €20,000) looks like an estimate, not a calculation. Base your figures on actual quotes, salary records, and depreciation schedules. Precise numbers demonstrate credibility.

Mistake 3: Budget inconsistent with the project narrative. If you describe a 12-month project but your budget covers 24 months of personnel costs, the evaluator will notice. Every budget line must be traceable to a specific activity in the project description.

Mistake 4: Ignoring the grant percentage limits. If the program covers 50% of eligible costs and your total budget is €300,000, the maximum grant is €150,000. Requesting €200,000 shows you do not understand the program rules. Always calculate the maximum grant amount before submitting.

Mistake 5: Failing to account for VAT rules. Whether VAT is eligible depends on the program and your company's VAT status. If your company can recover VAT, you must typically exclude VAT from your budget. Including recoverable VAT inflates the budget and will be corrected during evaluation, reducing your effective grant. Ask the BelGrant assistant if you need help with specific program budget rules.