Deductible expenses for your workspace and home office Real tax benefits

04/06/2025

Do you work at your kitchen table, or do you have a dedicated home office? Your workspace can also have a positive impact on your tax return. If you carry out your activity fully or partially from home, you can deduct part of your housing expenses. This article explains how to take advantage of this.

Basic principle: the surface area percentage

The deduction of home office expenses is based on the ratio between your workspace and your total home surface area.

Example

You have a separate office of 15 m² in a 150 m² home.

→ 10% of your housing expenses can be deducted as business costs.

Which expenses can you deduct?

You can apply this percentage to several costs, such as:

  • electricity

  • gas

  • water

  • heating

  • property tax

  • fire insurance

  • mortgage interest

Internet and phone expenses often follow a different calculation method.

If you work five days per week, you can deduct approximately 72% (5/7) of these costs.

A deduction above 75% may attract attention from the tax authorities.

Attention!
To recover VAT, each invoice must include your VAT number.

Local taxes

Municipalities and provinces often levy local taxes on offices and business premises. The good news: these local business taxes are 100% tax deductible as business expenses. The amount is usually calculated based on the surface area of your premises.

Do you have an office or workspace outside your home?
Then it’s simple: all costs directly related to this space are 100% deductible. You can also fully recover the VAT.

PIA Go! helps you optimize your home office tax benefits

PIA Go! understands that home office expenses can be difficult to assess correctly.

PIA accountants help you:

  • calculate the correct deductible percentages;

  • identify which expenses can be included;

  • ensure everything is properly recorded.

Your workspace thus becomes not only a place of productivity, but also a tool for tax optimization.

Want to optimize your home office from a tax perspective?
Schedule a no-obligation video consultation today.

Get in touch

FAQ

You can deduct certain expenses depending on the type of workspace.

Independent workspace
Your office has its own entrance and sanitary facilities, and you generate at least 30% of your income there?
→ Expenses such as rent, energy, and setup costs may be fully deductible.

Non-independent workspace
Your office is, for example, in an attic room without a separate entrance?
→ Only direct professional expenses are deductible, such as a desk chair or laptop.

Yes, depending on usage.

Private subscription
If used both privately and professionally, you can deduct a reasonable percentage, up to 75%.

Professional subscription
If the subscription is exclusively professional and in your company’s name, it is fully deductible.

Yes. You can deduct the professional portion, usually based on the surface area percentage of your home used as an office.

Yes. Purchases such as:

  • office chairs

  • desks

  • computers

  • printers

used exclusively for your activity are fully deductible.

Keep clear documentation, including:

  • the surface area of your workspace vs. your total home

  • the number of hours worked per week in your home office

  • the professional activities carried out there

These elements help justify professional use in case of a tax audit.

Charlotte
Written by Charlotte Backelandt , Marketing & Content Specialist,
reviewed by Tom Castelein, Personal Income Tax Expert.