Tax
Home Office Deduction & Business Expenses: Maximize Savings as Self-Employed
As a self-employed professional, you often work from home. But did you know that the home workspace deduction is almost impossible to obtain? Fortunately, there are many other business expenses that ARE deductible. In this complete guide, you'll learn exactly what you can deduct and how to maximize your tax savings.
Before we dive into all deductible expenses, an important reality check about the home office deduction.
The truth about home office costs
What CAN you deduct? (The good news list!)
Office costs
Computer, desk, chair, printer, software
100% deductible
Travel costs
ā¬0.23 per business kilometer or company car
Directly deductible
General costs
Phone, internet, trade magazines, courses
Based on usage
Business expenses: The complete list
| Category | Examples | Deductible % | Note |
|---|---|---|---|
| ICT & Office | Laptop, software, desk, chair | 100% | Over ā¬450: investment deduction |
| Communication | Phone, internet, website | Business portion | Split private/business |
| Transport | Car, public transport, parking, taxi | 100% business | Mileage administration! |
| Relations | Lunch, dinner, business gifts | 80% | Max ā¬4,600 representation |
| Knowledge | Courses, books, trade magazines | 100% | Must be profession-related |
| Marketing | Advertisements, printing, trade shows | 100% | Keep proof of results |
| Insurance | Professional liability, disability, legal aid | 100% | See insurance guide |
| Administration | Accountant, software, bank | 100% | Business account |
Company car or mileage allowance?
Mileage allowance (ā¬0.23/km)
Best choice if:
- ā¢ <15,000 business km/year
- ā¢ Older car (>5 years)
- ā¢ Little private use
- ā¢ Simple administration
Company car
Best choice if:
- ā¢ >15,000 business km/year
- ā¢ New/expensive car
- ā¢ >50% business use
- ā¢ Addition acceptable
Rekenvoorbeeld
Investment deduction: Extra discount on large purchases
KIA (Small-scale investment allowance) 2025
EIA & MIA: Extra deduction for sustainable investments
EIA - Energy investment allowance
40% extra deduction on energy-saving investments
Solar panels, heat pump
MIA - Environmental investment allowance
27-45% deduction on environmentally friendly investments
Electric car, LED
The good news: you can stack these deductions for even bigger tax savings.
Mixed costs: The practice
How to split private and business
| Cost item | Typical split | Calculation | Tip |
|---|---|---|---|
| Phone | 50-80% business | Call minutes analysis | Separate business phone |
| Internet | 20-50% business | Hour-based or flat rate | Agree on fixed % |
| Laptop | 60-100% business | Track usage hours | Business = 100% |
| Car | Varies greatly | Mileage administration | Use digital app |
Administration: How to do it right
Best practices for your administration
Not sure which category an expense falls into? We have a tool for that.
Common mistakes (and how to avoid them)
Deducting 100% phone costs
ā Make realistic split private/business (usually 50-70%)
Deducting all restaurant visits
ā Only business meetings, max 80% deductible
Private clothing as 'business clothing'
ā Only uniforms/protective clothing with logo
Deducting fines
ā Traffic fines are NEVER deductible
Not keeping receipts
ā Scan digitally, keep for 7 years
Store your receipts digitally with a receipt scanner app, so you effortlessly comply with the 7-year retention requirement and don't miss any deduction.
Maximum savings: The strategy
How much can you save?
Keep in mind that in 2026, the self-employed deduction has been halved, making every deductible business expense even more valuable. Make sure you reserve enough for taxes with the new rates.
Rekenvoorbeeld
š Want a precise calculation? Try our Tax Calculator with your actual numbers to see your exact tax savings.
Conclusion
The most important lessons:
- Forget the home workspace deduction - focus on achievable deductions
- Every business expense = tax benefit ā see our gross to net calculation 2026
- Good administration = maximum deduction
- Combine KIA with sustainable investments