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How can I deduct business expenses from my taxable income ?

In order to generate professional income, each taxpayer will need to incur certain expenses. You need to run a website, buy equipment and supplies, find potential customers, maybe invite them to lunch, go on business trips, educate yourself, employ staff, and so on. Business expenses are the cost of carrying on a trade or business

These expenses are usually deductible if the business operates to make a profit. Whereas income is normally reported gross, expenses will be subtracted from the gross income by the tax office, before it is subject to taxation. This principle generally applies to companies as well as sole traders and self-employed freelancers.

In Belgian law, there is no master list summing up all possible business expenses; there is only the general principle that expenses can be deducted from your taxable income if: (1) they relate to a professional activity; (2) they were incurred or were borne during the taxable period in which they are deducted; (3) they were made to obtain or retain taxable income; (4) and the reality of the cost and the amount are justified.

There are exceptions to this rule, as some expenses are not deducted immediately, but must be depreciated over time. The purpose is to spread the initial price of an asset or investment over its useful life. A car, for example, can be depreciated over a period of five years.

Some deductions may only cover a percentage of your spending, such as expenses related to your car (75%), meals with clients (69%) or entertainment expenses (50%), while other costs remain fully deductible (100%). If you intend to set up expense categories, the most important ones would be: workplace/home office, supplies and equipment, travel, employment and staffing, vehicle and transport, meals, representation, and insurance. As a business owner, you should have the reflex not to buy anything without first considering the tax purposes of that item or service. Solid record-keeping is vital for any business. 

However, if you do not want to make the effort of keeping track of all your receipts or your actual business expenses are relatively minor, the tax office will always let you apply a standard business expense deduction. You do not need to prove the professional nature of these expenses, as it is a pre-set, lump-sum amount automatically granted in your tax return, depending on your level of taxable income.

For income year 2024 (tax year 2025), for example, there is a 30% deduction on the first €19,166.64 in gross income. The maximum amount allowed is €5,750.00 for employees and €3,030.00 for company directors. Sole proprietors generating a profit are also allowed the lump-sum expense deduction of max. €5,750.00 in case they prefer not to demonstrate their actual expenses.

TAXPATRIA® can assist with optimizing your business expenses and filing your income tax return, as well as handle disputes with the tax office about certain disallowed expenses.


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