28/05/2025
Every entrepreneur faces various administrative obligations—and the costs that come with them. The good news? Most of these expenses are 100% tax deductible. In this article, discover how to turn even the most common administrative costs into a tax advantage.
When starting your business, you must register with the Crossroads Bank for Enterprises (CBE) via a business registration office.
The costs related to this registration are fully tax deductible, as are:
the costs for obtaining your VAT number;
any future updates to your CBE registration.
Have you paid late payment interest due to a delayed VAT or tax return?
These interests are tax deductible as business expenses.
Important:
Not all fines are treated the same way.
A flat-rate parking fee (e.g. not using a parking meter) is not considered a tax fine and is therefore deductible.
Tax fines and penalties, on the other hand, are generally not deductible.
Bank fees related to your business account, as well as interest on business loans, are fully deductible.
Note: the repayment of the loan principal is not deductible.
For mixed-use loans (e.g. a car used both privately and professionally), the interest is deductible in proportion to professional use.
Your quarterly social security contributions are fully deductible as business expenses.
These contributions are not subject to VAT.
Do you work from a home office?
You can deduct part of your property tax as a business expense. The deductible percentage depends on the professional-use portion of your home.
If your home is financed through a mortgage, you may also deduct part of the mortgage interest.
Important: only the interest is deductible, not the repayment of the capital.
Municipalities and provinces may levy local taxes on business premises.
These taxes are:
fully deductible as business expenses;
usually calculated based on the surface area of the premises.
Administrative expenses may not be the most exciting part of running a business—but they play a key role in your financial situation.
PIA Go! supports you by helping you:
apply the correct deduction percentage for property tax and mortgage interest;
distinguish between deductible interest and non-deductible fines;
correctly categorize your administrative expenses.
Want to optimize your deductible expenses?
Schedule a no-obligation video consultation today.
Which administrative expenses are deductible for a self-employed professional?
Deductible administrative expenses are those necessary for running your business, such as:
office supplies
accounting software
postal costs
CBE registration fees
business bank fees
The key condition is that they are directly linked to your professional activity.
Are CBE registration costs tax deductible?
Yes. The one-time registration fee with the CBE is fully deductible, as it is directly related to starting your business. Any future modifications may also generate deductible costs.
Can tax fines be deducted as business expenses?
No. Tax fines and administrative penalties are not deductible. They are considered a personal responsibility, not a business expense.
Are social security contributions deductible?
Yes. Your social security contributions, whether provisional or final, are fully tax deductible. They are automatically included in your personal income tax return, provided they are correctly recorded.
What should you do if you are unsure about deductibility?
If in doubt, it is best to consult an accountant. With PIA Go!, simply upload your expenses in the app—your accountant will check what is deductible and what is not. This way, you avoid mistakes while ensuring you don’t miss out on any tax advantages.
