openaccountants Belgium Income Tax (PB/IPP) -- Self-Employed Skill v2.0
General reference only. This skill is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for any specific person's facts, documents, elections, deadlines, residency, filing status, or local procedures. Do not rely on it to file, pay, amend, or take a tax position without review by a qualified professional in the relevant jurisdiction.
Section 1 -- Quick Reference
| Field | Value |
|---|---|
| Country | Belgium (Koninkrijk Belgie / Royaume de Belgique) |
| Tax | Personenbelasting (PB) / Impot des personnes physiques (IPP) + Gemeentebelasting |
| Currency | EUR only |
| Tax year | Calendar year (income year) / Assessment year = income year + 1 |
| Primary legislation | Wetboek van de inkomstenbelastingen 1992 (WIB 92) / CIR 92 |
| Supporting legislation | KB/WIB 92; Royal Decree No. 38 (social statute) |
| Tax authority | FOD Financien / SPF Finances |
| Filing portal | Tax-on-web (MyMinfin) |
| Filing deadline | 30 June (self-filing) / mid-October (with accountant) |
| Contributor | Open Accountants Community |
| Validated by | Pending -- requires sign-off by erkend boekhouder-fiscalist or bedrijfsrevisor |
| Validation date | Pending |
| Skill version | 2.0 |
Progressive Tax Brackets (Income Year 2025 / AJ 2026)
| Taxable Income (EUR) | Marginal Rate |
|---|---|
| 0 -- 16,720 | 25% |
| 16,721 -- 29,510 | 40% |
| 29,511 -- 51,070 | 45% |
| Above 51,070 | 50% |
Belastingvrij Minimum (Tax-Free Allowance)
| Category | EUR |
|---|---|
| Base | 10,910 |
| +1 dependant child | +1,850 |
| +2 dependant children | +4,760 |
| +3 dependant children | +10,660 |
| +4+ children | +6,180 per additional |
| Disabled dependant | +1,850 per person |
Converted to tax reduction at 25% rate: EUR 10,910 x 25% = EUR 2,727.50 base.
Gemeentebelasting (Municipal Surcharge)
- Range: 0% to 9% of federal tax
- Average: ~7%
- MUST know municipality to compute. STOP if unknown.
Key Deductions
| Item | Rule |
|---|---|
| Sociale bijdragen | Fully deductible as professional expense |
| Restaurant meals (business) | 69% deductible |
| Business gifts | 50% deductible |
| VAPZ/PLCI (gewoon) | Max ~EUR 3,965 (8.17% of reference income) |
| VAPZ/PLCI (sociaal) | Max ~EUR 4,562 (9.40% of reference income) |
| Forfaitaire beroepskosten (max) | ~EUR 5,750 |
Conservative Defaults
| Ambiguity | Default |
|---|---|
| Unknown municipality | STOP -- cannot compute gemeentebelasting |
| Unknown expense method | Forfaitaire beroepskosten |
| Unknown business-use % | 0% deduction |
| Unknown VAPZ type | Gewoon VAPZ |
| Unknown vehicle CO2 | Minimum deductibility percentage |
Section 2 -- Required Inputs and Refusal Catalogue
Required Inputs
Minimum viable -- bank statement for the full tax year, municipality of residence, marital/family status.
Recommended -- all invoices, sociale bijdragen statements from social fund, VAPZ/PLCI certificates, prior year aanslagbiljet.
Ideal -- complete accounting records, asset register, voorafbetalingen confirmations, employment income fiche 281.10.
Refusal if minimum is missing -- SOFT WARN. No bank statement = hard stop. No municipality = hard stop.
Refusal Catalogue
R-BE-1 -- Companies (BV, NV, CV). "This skill covers natural persons (personenbelasting) only. Vennootschapsbelasting is out of scope."
R-BE-2 -- Non-resident. "Non-resident taxation (BNI/INR) has different rules. Escalate."
R-BE-3 -- International structures. "Cross-border income and tax treaties require specialist analysis. Escalate."
R-BE-4 -- Fiscale procedures / bezwaar. "Objections and appeals require specialist advice. Escalate."
Section 3 -- Transaction Pattern Library
This is the deterministic pre-classifier. When a bank statement transaction matches a pattern below, apply the treatment directly. If none match, fall through to Tier 1 rules in Section 5.
3.1 Income Patterns (Credits)
| Pattern | Tax Line | Treatment | Notes |
|---|---|---|---|
| OVERSCHRIJVING [client], BETALING, HONORARIUM | Beroepsinkomsten | Business income | Net of BTW if BTW-registered |
| STRIPE PAYOUT, PAYPAL PAYOUT | Beroepsinkomsten | Business income | Platform payout |
| LOON, WEDDE, WERKGEVER | Bezoldiging | NOT self-employment | Employment income |
| HUUR ONTVANGEN, HUUROPBRENGST | Onroerend inkomen | NOT self-employment | Rental income |
| INTERESTEN, DIVIDEND | Roerend inkomen | NOT self-employment | Capital income (RV 30% withheld) |
| FOD FINANCIEN TERUGBETALING | EXCLUDE | Not income | Tax refund |
3.2 Expense Patterns (Debits) -- Fully Deductible
| Pattern | Category | Treatment | Notes |
|---|---|---|---|
| KANTOORHUUR, HUUR KANTOOR, OFFICE RENT | Huurkosten | Fully deductible | Dedicated premises |
| BEROEPSAANSPRAKELIJKHEID, BA VERZEKERING | Verzekering | Fully deductible | Professional insurance |
| BOEKHOUDER, ACCOUNTANT, FISCALIST | Erelonen | Fully deductible | |
| ADVOCAAT, NOTARIS (business) | Erelonen | Fully deductible | Business-related |
| KANTOORMATERIAAL, BUREELBENODIGDHEDEN | Kantoorkosten | Fully deductible | |
| RECLAME, MARKETING, GOOGLE ADS | Reclamekosten | Fully deductible | |
| OPLEIDING, VORMING, BIJSCHOLING | Opleidingskosten | Fully deductible | Current profession |
| LIDMAATSCHAP, BEROEPSVERENIGING | Bijdragen | Fully deductible | |
| BANKREKENINGKOSTEN, BANKKOSTEN | Financiele kosten | Fully deductible | Business account |
| STRIPE FEE, PAYPAL FEE | Transactiekosten | Fully deductible | |
| SOFTWARE, LICENTIE, ABONNEMENT | IT-kosten | Fully deductible |
3.3 Expense Patterns -- Sociale Bijdragen
| Pattern | Treatment | Notes |
|---|---|---|
| ACERTA, LIANTIS, XERIUS, GROUP S, PARTENA | Fully deductible | Social insurance fund contributions |
| SOCIALE BIJDRAGEN, COTISATIONS SOCIALES | Fully deductible | Quarterly social contributions |
| VAPZ, PLCI, AANVULLEND PENSIOEN | Deductible (within limits) | See Section 6 for caps |
3.4 Expense Patterns -- Partially Deductible
| Pattern | Deductibility | Treatment | Notes |
|---|---|---|---|
| RESTAURANT, ETENTJE, ZAKENLUNCH | 69% | Partially deductible | Business purpose restaurant meals |
| GESCHENK, CADEAU, RELATIEGESCHENK | 50% | Partially deductible | Business gifts |
| BRANDSTOF, BENZINE, DIESEL, TOTAL, Q8 | CO2-based % | T2 | Vehicle fuel -- see CO2 rules |
| ONDERHOUD AUTO, GARAGE | CO2-based % | T2 | Vehicle maintenance |
3.5 Expense Patterns -- NOT Deductible
| Pattern | Treatment | Notes |
|---|---|---|
| PRIVE, BOODSCHAPPEN, SUPERMARKT, COLRUYT, DELHAIZE | NOT deductible | Personal living costs |
| BOETE, GELDBOETE | NOT deductible | Fines |
| PERSONENBELASTING, PB BETALING | NOT deductible | Income tax |
| PRIVEOPNAME | NOT deductible | Drawings |
3.6 Capital Items
| Pattern | Useful Life | Annual Rate | Notes |
|---|---|---|---|
| COMPUTER, LAPTOP, PC | 3 years | 33.3% | |
| PRINTER, SCANNER | 5 years | 20% | |
| KANTOORMEUBILAIR, BUREAU | 10 years | 10% | |
| AUTO, WAGEN (business) | 5 years | 20% | CO2 deductibility limits apply |
| GEBOUW (commercial) | 33 years | 3% |
3.7 Exclusions
| Pattern | Treatment | Notes |
|---|---|---|
| EIGEN REKENING, INTERNE OVERSCHRIJVING | EXCLUDE | Own-account transfer |
| LENING, AFLOSSING | EXCLUDE | Loan principal |
| LENINGSINTERESTEN (business) | Deductible | Business loan interest |
| BTW BETALING | EXCLUDE from P&L | BTW liability payment |
| VOORAFBETALING BELASTING | Track separately | Credit against tax due |
3.8 Belgian Banks -- Statement Format Reference
| Bank | Format | Key Fields | Notes |
|---|---|---|---|
| BNP Paribas Fortis | CSV, PDF | Datum, Omschrijving, Bedrag | Most common; CODA format available |
| KBC | CSV, PDF | Boekingsdatum, Omschrijving, Bedrag | KBC Touch export |
| Belfius | CSV, PDF | Datum, Mededeling, Bedrag | |
| ING Belgium | CSV, PDF | Datum, Naam tegenpartij, Bedrag | |
| Argenta | CSV, PDF | Datum, Verrichting, Bedrag | |
| N26, Revolut | CSV | Date, Counterparty, Amount | Neobank format |
Section 4 -- Worked Examples
Example 1 -- Client Payment (BTW-registered)
Input line:
15/03/2025 ; BNP Fortis Credit ; DESIGN STUDIO BVBA ; Factuur 2025-012 ; +3,025.00 ; EUR
Reasoning: Client payment. If BTW-registered (21%), EUR 3,025 includes BTW. Net = EUR 2,500 (beroepsinkomsten) + EUR 525 BTW.
Classification: Beroepsinkomsten = EUR 2,500.
Example 2 -- Restaurant Meal (69% Deductible)
Input line:
22/04/2025 ; KBC Visa ; RESTAURANT COMME CHEZ SOI ; Zakenlunch ; -95.00 ; EUR
Reasoning: Business restaurant meal. 69% deductible. EUR 95 x 69% = EUR 65.55 deductible. EUR 29.45 not deductible.
Classification: Beroepskosten = EUR 65.55.
Example 3 -- Sociale Bijdragen
Input line:
15/01/2025 ; Belfius DD ; ACERTA ; Sociale bijdragen Q4 2024 ; -1,850.00 ; EUR
Reasoning: Social contributions. Fully deductible as beroepskosten.
Classification: Beroepskosten -- fully deductible.
Example 4 -- VAPZ Contribution
Input line:
30/06/2025 ; KBC DD ; ACERTA VAPZ ; Gewoon VAPZ 2025 ; -3,965.00 ; EUR
Reasoning: Gewoon VAPZ at maximum (EUR 3,965 for 2025). Deductible as social contribution.
Classification: Deductible within VAPZ cap.
Example 5 -- Vehicle Fuel (CO2-dependent)
Input line:
10/05/2025 ; BNP Fortis Card ; TOTAL ENERGIES ; Diesel ; -75.00 ; EUR
Reasoning: Vehicle fuel. Fuel is max 75% deductible regardless of CO2. Other vehicle costs follow the CO2-based formula. Business % required.
Classification: T2 -- 75% cap on fuel, business % required, CO2 deductibility for other costs.
Example 6 -- Personal Groceries (Exclude)
Input line:
08/03/2025 ; Belfius Card ; COLRUYT ; Boodschappen ; -85.00 ; EUR
Reasoning: Personal groceries. Not business-related.
Classification: NOT deductible. Exclude.
Section 5 -- Tier 1 Rules (When Data Is Clear)
5.1 Beroepsinkomsten
All business income is beroepsinkomsten. For BTW-registered, report net of BTW.
5.2 Beroepskosten
Two methods (choose one):
- Werkelijke (actual): All documented business expenses meeting the test
- Forfaitaire (flat-rate): Graduated scale, max ~EUR 5,750
Cannot combine both. Sociale bijdragen deductible under either method.
5.3 Forfaitaire Beroepskosten Scale
| Income Bracket (EUR) | Rate |
|---|---|
| 0 -- 19,620 | 30% |
| 19,621 -- 38,900 | 11% |
| 38,901 -- 64,770 | 3% |
| Above 64,770 | 0% |
5.4 Non-Deductible Expenses
| Expense | Reason |
|---|---|
| Personal living expenses | Not business-related |
| Fines (boetes) | Public policy |
| Income tax (personenbelasting) | Tax on income |
| Capital expenditure | Through afschrijvingen |
5.5 Partially Deductible
| Item | % Deductible |
|---|---|
| Restaurant meals (business) | 69% |
| Business gifts | 50% |
| Vehicle costs (fuel) | Max 75% |
| Vehicle costs (other) | CO2-based formula |
5.6 Voorafbetalingen (Advance Payments)
| Quarter | Deadline | Benefit % |
|---|---|---|
| VA1 | 10 April | 12% |
| VA2 | 10 July | 10% |
| VA3 | 10 October | 8% |
| VA4 | 20 December | 6% |
Vermeerdering (~9% of tax) for insufficient advance payments. Making VA earns bonification to offset.
5.7 Filing Deadlines
| Item | Deadline |
|---|---|
| Tax-on-web (self) | 30 June |
| With accountant | Mid-October |
| Paper filing | End of June |
5.8 Penalties
| Offence | Penalty |
|---|---|
| Late filing (first) | EUR 50/month |
| Late payment interest | 4% per year (2025) |
| Non-filing / serious | EUR 50-1,250 + tax increase 10%-200% |
5.9 Afschrijvingen (Depreciation)
| Asset | Life | Rate |
|---|---|---|
| Computer | 3 years | 33.3% |
| Software | 3 years | 33.3% |
| Furniture | 10 years | 10% |
| Vehicles | 5 years | 20% |
| Buildings | 33 years | 3% |
Straight-line or declining balance (degressief) permitted.
Section 6 -- Tier 2 Catalogue (Reviewer Judgement Required)
6.1 Werkelijke vs Forfaitaire Comparison
Compare actual expenses (including sociale bijdragen) against forfaitaire scale. Flag for reviewer.
6.2 Motor Vehicle CO2 Deductibility
From 2025, formula: 120% - (0.5% x coefficient x CO2 g/km). High-emission vehicles significantly limited. Flag for reviewer to compute using exact CO2 and fuel type.
6.3 VAPZ/PLCI Limits
- Gewoon: 8.17% of reference income (max ~EUR 3,965)
- Sociaal: 9.40% of reference income (max ~EUR 4,562)
- Reference income = net professional income from 3 years prior
- Flag for reviewer to confirm limit
6.4 Home Office
Dedicated workspace required. Proportional by floor area. Dual-use does not qualify.
6.5 Phone / Internet Mixed Use
Business portion only. Default 0%.
6.6 Sociale Bijdragen in First 3 Years
Provisional contributions on minimum basis. Regularisation later. Adjustment in year of payment/receipt.
Section 7 -- Excel Working Paper Template
BELGIUM INCOME TAX -- PB/IPP WORKING PAPER
Tax Year: 2025 (AJ 2026)
Client: ___________________________
Municipality: ___________ (Rate: ___%)
Status: Single / Married / Cohabitant
Dependants: ___
A. BEROEPSINKOMSTEN (net of BTW if registered) ___________
B. BEROEPSKOSTEN
Method: [ ] Werkelijk [ ] Forfaitair
B1. Sociale bijdragen ___________
B2. Kantoorkosten ___________
B3. Verzekeringen ___________
B4. Erelonen (boekhouder, advocaat) ___________
B5. IT / software ___________
B6. Reclame / marketing ___________
B7. Reiskosten ___________
B8. Restaurantkosten (69%) ___________
B9. Autokosten (CO2-based %) ___________
B10. Afschrijvingen ___________
B11. Overige beroepskosten ___________
B12. TOTAL ___________
C. NETTO BEROEPSINKOMEN (A - B12) ___________
D. BELASTING
D1. Federale belasting (brackets) ___________
D2. Less: Belastingvrij minimum reductie ___________
D3. Less: Other reductions ___________
D4. Federale belasting verschuldigd ___________
D5. Gemeentebelasting (D4 x rate) ___________
D6. TOTAL ___________
D7. Less: Voorafbetalingen ___________
D8. SALDO ___________
REVIEWER FLAGS:
[ ] Municipality and rate confirmed?
[ ] Expense method confirmed (actual/forfait)?
[ ] Vehicle CO2 deductibility computed?
[ ] Restaurant meals at 69%?
[ ] VAPZ within limits?
[ ] Vermeerdering for missing VA?
Section 8 -- Bank Statement Reading Guide
Belgian Bank Statement Formats
| Bank | Format | Key Fields | Notes |
|---|---|---|---|
| BNP Paribas Fortis | CSV, PDF, CODA | Datum, Omschrijving/Mededeling, Bedrag | CODA format = structured |
| KBC | CSV, PDF | Boekingsdatum, Omschrijving, Bedrag | KBC Touch/Business |
| Belfius | CSV, PDF | Datum, Mededeling, Bedrag | |
| ING Belgium | CSV, PDF | Datum, Naam tegenpartij, Mededeling, Bedrag | |
| Argenta | CSV, PDF | Datum, Verrichting, Bedrag |
Key Belgian Banking Terms
| Term | English | Hint |
|---|---|---|
| Overschrijving | Transfer | Check direction |
| Domiciliering | Direct debit | Regular expense |
| Storting | Deposit | Potential income |
| Betaalkaart / Visa | Card payment | Expense |
| Bancontact | Debit card payment | Expense |
| Rekeningkosten | Account charges | Deductible |
Section 9 -- Onboarding Fallback
ONBOARDING QUESTIONS -- BELGIUM INCOME TAX
1. Municipality of residence? (Required for gemeentebelasting)
2. Family status: single, married/cohabitant, dependants?
3. Expense method: actual (werkelijk) or flat-rate (forfaitair)?
4. Sociale bijdragen: total paid in the year? Which fund?
5. VAPZ/PLCI contributions? Gewoon or sociaal?
6. Vehicle: CO2 emissions? Fuel type? Business %?
7. Home office: dedicated room? Floor area %?
8. Phone/internet: business %?
9. Other income (employment, rental, investment)?
10. Voorafbetalingen made? Amounts and dates?
Section 10 -- Reference Material
Key Legislation
| Topic | Reference |
|---|---|
| Tax brackets | WIB 92, Art. 130+ |
| Belastingvrij minimum | WIB 92, Art. 131-145 |
| Beroepskosten | WIB 92, Art. 49-66 |
| Forfaitaire kosten | WIB 92, Art. 51 |
| Gemeentebelasting | WIB 92, Art. 466-470 |
| Sociale bijdragen | Royal Decree No. 38 |
| VAPZ | Programmawet 24 Dec 2002 |
| Afschrijvingen | WIB 92, Art. 61-65 |
| Voorafbetalingen | WIB 92, Art. 157-168 |
| Restaurant meals | 69% rule |
| Record keeping | 7 years |
Test Suite
Test 1 -- Single, Antwerp (8.4%), mid-range. Input: Turnover EUR 50,000, actual expenses EUR 10,000 (incl. sociale bijdragen EUR 5,500). Expected: Net EUR 40,000. Federal tax ~EUR 14,016. Less belastingvrij EUR 2,728 = EUR 11,289. Gemeente EUR 948.
Test 2 -- Forfaitaire comparison. Input: Turnover EUR 30,000, actual EUR 2,000. Expected: Forfaitaire ~EUR 7,028. Forfaitaire is better.
Test 3 -- Restaurant meals. Input: EUR 3,000 restaurant at 100%. Expected: 69% = EUR 2,070 deductible. Remove EUR 930.
Test 4 -- VAPZ cap. Input: EUR 5,000 gewoon VAPZ. Max EUR 3,965. Expected: EUR 1,035 excess not deductible.
Test 5 -- Gemeentebelasting. Input: Federal tax EUR 8,000, rate 7%. Expected: Gemeente EUR 560. Total EUR 8,560.
Test 6 -- Vermeerdering. Input: Tax EUR 10,000, no VA. Expected: Vermeerdering ~EUR 900. Total EUR 10,900.
PROHIBITIONS
- NEVER compute gemeentebelasting without municipality and actual rate
- NEVER allow both werkelijke and forfaitaire beroepskosten
- NEVER deduct restaurant meals at 100% -- maximum 69%
- NEVER allow income tax as a deduction
- NEVER allow fines as deductions
- NEVER allow VAPZ above maximum
- NEVER ignore vermeerdering for missing advance payments
- NEVER present calculations as definitive
Disclaimer
This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as an erkend boekhouder-fiscalist or equivalent licensed practitioner in your jurisdiction) before filing or acting upon.
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