We also have a webinar about income tax that you can find if you click here.
As a Belgian citizen, you are expected to declare and pay taxes on your annual income. The declaration is included in the same tax return that you would fill in as an employee. Actually, there is only one income tax return for all your sources of income (self-employed, employee, and other private income such as real-estate or stocks) and deductions (business expenses as self-employed, health insurance, donations, etc).
You declare and pay taxes on the previous fiscal year. For example, your 2025 income has to be declared in October 2026, and paid between October 2026 and April 2027.
You can do everything online yourself, via the official website Tax-on-web, until the 16th of October 2026.
There are 2 parts on your tax return:
Part 1 includes all your personal revenues (as an employee, or income from real-estate activities) and deductible expenses (e.g. donations). The part as an employee is pre-filled in.
Part 2 is related to your self employed activity
⭐ You will minimize your taxes We make sure all your professional expenses count to the max of their deductibility
🎓 Your tax submission will be quick and correct Your income tax return will be submitted on time, with all the necessary documents.
💰 You save money You don't have to pay an expensive accountant to prepare your return, the app takes care of it for you.
✏️ Guaranteed 100% accuracy If you are ever fined or audited as a result of an Accountable error, we have got you covered.
🌎 You are in control You know exactly what you are submitting to the tax office. Is anything unclear? Our team is here to help.
Accountable will compute all the necessary information for Part 2 of your income tax return. Here is a quick checklist of what to prepare:
Go to your taxes screen > year 2025 > income tax submission 2025
Fill in the form and check that the information is correct (income statement, deductible expenses, advance payments, etc).
1) Tax review : The system runs a number of tests and can identify potential issues:
If the system detects one or more issues, these will appear in Yellow / Orange:
→ Just click on the potential issue (here “You have unreviewed expense”) and you'll have access to the expenses concerned. If you're not sure what to do, don't hesitate to contact us!
Once the issue has been corrected, the message will disappear.
2) Personal details: your personal information, civil status, and dependent children
3)Your activity: your profession, and self-employed activity start date
4) Professional capital gains: summary of your capital gains (only applies if you have sold assets in 2025)
5) Subsidies & indemnities: additional revenues you have encoded as subsidies
6) Income: your P&L as a self-employed, and revenue as employee (relevant for complementary self-employed, or if you had an employee job in 2025 before starting as a self-employed)
7) Stock variations: This is where you enter the € value of your stock variations, if necessary:
8) Advance payments: Here you need to input the quarterly prepayments you have made (pre-filled in based on what you have encoded in the app)
9) Review will show you all the cells you need to fill in online in Part 2 of your tax return, with the related values.
10) Submit: This step guides you through the steps on MyMinFin, with screenshots available for each step:
💡 Tip: To move from one step to the next, please scroll to the bottom of the page and click "Next" to validate the step you've just followed. |
1- Connect to Myminfin under your own name (use itsme or your card reader)
2- Go to the Part2 - Fiscal year 2026 - Income 2025
. Click “fill-in”, then continue
. Scroll to the bottom of the screen and click “I want to add new data”
. Go to Part2
3- Fill in Part2 with information provided by Accountable
4- Complete the process (= also fill in part 1) & submit your declaration
You’re done, congrats!
Read our dedicated documentation on the Help Center.
You can also contact us for any questions, or if you need support.
You don't pay at the same time as the submission of your income tax declaration: it will be later in the year, when you receive the final calculation of the government. Receiving this document can vary from Autumn of the same year to Spring of the next year. The payment of the income tax is also done via MyMinfin.
Do it in an easy way - pay online via MyMinfin. You will pay automatically on the correct bank account number, with the specific reference.
You can also pay
by bank transfer (with the correct specific reference) to the bank account number indicated on the tax assessment notice (also called “tax calculation” or “calculation note”), the payment advice, or the reminder;
with a bank card in one of the infocenters of the FPS Finance (Bancontact - Mister Cash);
to the debt collector when they have initiated proceedings (warning: there are additional costs in this case).
Warning: You can no longer pay in cash or with a (foreign) cheque. If you don't live in Belgium and don't have access to MyMinfin, you are advised to pay by a free SEPA bank transfer.
Always use the specific reference you will find on your tax assessment notice, the payment advice, or the reminder. The government can then process your payment automatically and quickly update your situation.
Join our upcoming webinars designed for starters!
Start as Self-employed: Learn about the different statuses, tax obligations, and how to start as a self-employed professional.
Tips and tricks in Accountable: Understand deductible expenses, how to encode revenue and expenses, automate your accounting, and more.
And remember, our wonderful team is always here to assist you—whether it’s for filing your yearly income tax or answering any questions along the way.
📩 Reach out to us anytime via the chat box in the app or by email at support@accountable.eu.
Author - Valesca Wilms
As content marketing lead at Accountable Belgium, Valesca writes about freelancing, self-employment, and taxes based on her own experience as a freelancer.
Who is Valesca ?Thank you for your feedback!
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15/04/2023
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22/03/2026
