BE Income Tax

Belgium Income Tax (PB/IPP) -- Self-Employed Skill v2.0

Section 1 -- Quick Reference

Quick Reference table

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)

Progressive Tax Brackets table

Taxable Income (EUR)	Marginal Rate
0 -- 16,320	25%
16,721 -- 28,800	40%
29,511 -- 49,840	45%
Above 49,840	50%

Belastingvrij Minimum (Tax-Free Allowance)

Belastingvrij Minimum table

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)

• Gemeentebelasting range — 0% to 9% of federal tax % (Average ~7%)
• Unknown municipality rule — MUST know municipality to compute. STOP if unknown.

Key Deductions

Key Deductions table

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

Conservative Defaults table

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)

Income Patterns table

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

Fully Deductible Expenses table

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

Sociale Bijdragen table

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

Partially Deductible table

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

NOT Deductible table

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

Capital Items table

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

Exclusions table

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

Belgian Banks Statement Format table

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

• Beroepsinkomsten treatment — All business income is beroepsinkomsten. For BTW-registered, report net of BTW.

5.2 Beroepskosten

• Two methods — 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

Forfaitaire Beroepskosten Scale table

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

Non-Deductible Expenses table

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

Partially Deductible table

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)

Voorafbetalingen table

Quarter	Deadline	Benefit %
VA1	10 April	12%
VA2	10 July	10%
VA3	10 October	8%
VA4	20 December	6%

• Vermeerdering — Vermeerdering (~9% of tax) for insufficient advance payments. Making VA earns bonification to offset.

5.7 Filing Deadlines

Filing Deadlines table

Item	Deadline
Tax-on-web (self)	30 June
With accountant	Mid-October
Paper filing	End of June

5.8 Penalties

Penalties table

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)

Afschrijvingen table

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%

• Depreciation methods permitted — Straight-line or declining balance (degressief) permitted.

Section 6 -- Tier 2 Catalogue (Reviewer Judgement Required)

6.1 Werkelijke vs Forfaitaire Comparison

• Comparison rule — Compare actual expenses (including sociale bijdragen) against forfaitaire scale. Flag for reviewer.

6.2 Motor Vehicle CO2 Deductibility

• CO2 deductibility formula — 120% - (0.5% x coefficient x CO2 g/km) (From 2025. High-emission vehicles significantly limited. Flag for reviewer to compute using exact CO2 and fuel type.)

6.3 VAPZ/PLCI Limits

• 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

• Home office deduction rule — Dedicated workspace required. Proportional by floor area. Dual-use does not qualify.

6.5 Phone / Internet Mixed Use

• Phone/Internet mixed use rule — Business portion only. Default 0%.

6.6 Sociale Bijdragen in First 3 Years

• First 3 years sociale bijdragen rule — 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

Belgian Bank Statement Formats table

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

Key Belgian Banking Terms table

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

Key Legislation table

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

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.

Input: Turnover EUR 30,000, actual EUR 2,000. Expected: Forfaitaire ~EUR 7,028. Forfaitaire is better.

Input: EUR 3,000 restaurant at 100%. Expected: 69% = EUR 2,070 deductible. Remove EUR 930.

Input: EUR 5,000 gewoon VAPZ. Max EUR 3,965. Expected: EUR 1,035 excess not deductible.

Input: Federal tax EUR 8,000, rate 7%. Expected: Gemeente EUR 560. Total EUR 8,560.

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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