Final orchestrator skill that assembles the complete Netherlands filing package for Netherlands-resident self-employed individuals and sole proprietors (ZZP/eenmanszaak). Consumes outputs from all Netherlands content skills (nl-btw-return for BTW-aangifte, nl-income-tax for aangifte inkomstenbela…
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General reference only
This Guide is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for your personal 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.
Source-cited draft. This Guide is source-cited but has not been reviewed by a licensed practitioner. It may be incomplete, outdated, or wrong.
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Income tax rate – Schijf 1 (Box 1)
36.97%Wet inkomstenbelasting 2001
Income tax – Schijf 1 upper bound (Box 1)
EUR 38,441Wet inkomstenbelasting 2001
Income tax rate – Schijf 2 (Box 1)
49.50%Wet inkomstenbelasting 2001
Income tax – Schijf 2 range (Box 1)
EUR 38,441 – EUR 75,624Wet inkomstenbelasting 2001
Box 3 vermogensrendementsheffing rate
36%Wet inkomstenbelasting 2001
Heffingsvrij vermogen (Box 3) – single
EUR 57,000Wet inkomstenbelasting 2001
Heffingsvrij vermogen (Box 3) – fiscal partners
EUR 114,000Wet inkomstenbelasting 2001
Zelfstandigenaftrek (2025)
EUR 2,470Art. 3.76 Wet IB 2001
Startersaftrek (2025)
EUR 2,123Art. 3.76a Wet IB 2001
MKB-winstvrijstelling rate (2025)
13.31%Art. 3.79a Wet IB 2001
ZVW bijdrage percentage – self-employed (2025)
5.32%Zorgverzekeringswet
ZVW maximum bijdrage-inkomen (2025)
EUR 71,628Zorgverzekeringswet
KOR (Kleineondernemersregeling) annual turnover threshold
EUR 20,000Wet op de omzetbelasting 1968
BTW hoog tarief (standard VAT rate)
21%Wet op de omzetbelasting 1968
BTW laag tarief (reduced VAT rate)
9%Wet op de omzetbelasting 1968
Representatiekosten – income tax deductible percentage
80% of net costArt. 3.15 Wet IB 2001
Aangifte inkomstenbelasting 2025 filing deadline
1 May 2026Algemene wet inzake rijksbelastingen (AWR)
BTW Q4 2025 aangifte filing deadline
31 January 2026Wet op de omzetbelasting 1968
BTW Q1 2026 (Jan–Mar) filing deadline
30 April 2026Wet op de omzetbelasting 1968
BTW Q2 2026 (Apr–Jun) filing deadline
31 July 2026Wet op de omzetbelasting 1968
BTW Q3 2026 (Jul–Sep) filing deadline
31 October 2026Wet op de omzetbelasting 1968
BTW Q4 2026 (Oct–Dec) filing deadline
31 January 2027Wet op de omzetbelasting 1968
ICP opgave – due date (aligned with BTW filing frequency)
Same date as BTW-aangifteWet op de omzetbelasting 1968
Bewaarplicht (record retention period)
7 yearsArt. 52 Algemene wet inzake rijksbelastingen (AWR)
BTW-compliant factuur obligation
Required for all salesArt. 35a Wet op de omzetbelasting 1968
Box 3 peildatum
1 January 2025Wet inkomstenbelasting 2001
Box 3 second peildatum (for averaging where applicable)
1 January 2026Wet inkomstenbelasting 2001
Schijf 1 / Schijf 2 boundary (income threshold for IB surcharge) – also flag threshold for planning
EUR 38,441Wet inkomstenbelasting 2001
MKB-winstvrijstelling computation base
Winst after zelfstandigenaftrek (and startersaftrek)Art. 3.79a Wet IB 2001
Urencriterium – minimum hours for ondernemersaftrek eligibility
1,225 hours per yearArt. 3.6 Wet inkomstenbelasting 2001
When this skill is invoked, you have already passed through intake. The user has consented to the full workflow. Execute all steps without pausing for permission.
Specifically:
nl-freelance-intake produced an intake package, trust it. You can cross-check specific numbers during reconciliation but do not re-interrogate the user about residency, business structure, or anything else intake already captured.The user has already been told (by the intake skill) that the final package requires belastingadviseur signoff before filing. State it once in the final output and move on.
Failure mode to avoid: The skill halts mid-execution and asks the user a meta-question about workflow pacing. If you feel the urge to ask "how should I proceed," the correct action is to pick the most defensible path and proceed, flagging the decision in the reviewer brief so the reviewer can challenge it.
The final capstone skill for Netherlands self-employed returns. Every Netherlands content skill feeds into this one. The output is the complete reviewer package that a belastingadviseur can review, sign off on, and deliver to the client along with filing instructions.
This skill coordinates execution of the content skills, verifies cross-skill consistency, and assembles the final deliverable.
Produces the complete Netherlands filing package for:
Cross-check 1: BTW omzet matches IB winst uit onderneming gross income (Section 3)
| BTW Output | IB Input | Rule |
|---|---|---|
| BTW-aangifte rubriek 1a (leveringen/diensten belast met hoog tarief) + 1b (laag tarief) + 1e (leveringen/diensten belast met 0% of niet bij u belast) | IB omzet (gross receipts for winst uit onderneming) | Must match within EUR 1 |
| Regular BTW: sum of rubrieken 1a + 1b + 1c + 1d + 1e | IB omzet | Turnover is ex-BTW |
| KOR: declared turnover on annual declaration | IB omzet | Turnover is gross (no BTW separation) |
Cross-check 2: ZVW bijdrage-inkomen matches IB Box 1 income (Section 3)
| ZVW Input | Source | Rule |
|---|---|---|
| Bijdrage-inkomen | IB Box 1 verzamelinkomen (winst + employment income, before persoonsgebonden aftrek) | ZVW is based on Box 1 income |
| Voorlopige aanslag ZVW paid | Bank statement / Belastingdienst beschikking | Reconcile against final ZVW liability |
Cross-check 3: Voorlopige aanslag reconciliation (Section 3)
| Voorlopige Aanslag | Source | Rule |
|---|---|---|
| Voorlopige aanslag IB 2025 paid | Bank statement / beschikking | Enters IB-aangifte as voorheffing |
| Voorlopige aanslag ZVW 2025 paid | Bank statement / beschikking | Enters ZVW reconciliation |
| Final IB + ZVW liability | Computed by nl-income-tax + nl-zvw | Difference = te betalen or terug te ontvangen |
Cross-check 4: BTW voorbelasting and income tax deductions consistency (Section 3)
| Item | BTW Treatment | Income Tax Treatment |
|---|---|---|
| Reclaimable voorbelasting (regular BTW) | Claimed in BTW-aangifte rubriek 5b | NOT a deduction in IB (netto bedrag only) |
| Blocked voorbelasting (regular BTW) | Not claimed | IS a deduction in IB (added to cost) |
| All BTW paid (KOR) | No recovery | IS a deduction in IB (bruto bedrag is cost) |
| Representatiekosten BTW | 100% BTW reclaimable | Only 80% of net cost deductible for IB (Art. 3.15 Wet IB 2001) |
| Privégebruik auto (BUA) | BTW correction via BUA (besluit uitsluiting aftrek) on BTW-aangifte | Separate private-use correction for IB |
Cross-check 5: Ondernemersaftrek computation chain (Section 3)
| Step | Computation | Rule |
|---|---|---|
| Winst uit onderneming (before ondernemersaftrek) | Omzet minus bedrijfskosten minus afschrijvingen | Starting point |
| Zelfstandigenaftrek | EUR 2,470 (2025) if urencriterium met | Art. 3.76 Wet IB 2001 |
| Startersaftrek | EUR 2,123 (2025) if eligible | Art. 3.76a Wet IB 2001 |
| Winst after zelfstandigenaftrek | Winst minus zelfstandigenaftrek minus startersaftrek | Intermediate |
| MKB-winstvrijstelling | 13.31% of winst after zelfstandigenaftrek | Art. 3.79a Wet IB 2001 |
| Belastbare winst | Winst after zelfstandigenaftrek minus MKB-winstvrijstelling | To Box 1 |
# Complete Return Package: [Client Name] -- Tax Year 2025
## Executive Summary
- Filing status: [Single / Fiscal partner]
- Residence: Netherlands (full-year)
- Business: ZZP / eenmanszaak (KvK [number])
- BTW registration: Regular / KOR
- BTW-aangifte position (Q4 or annual): EUR X te betalen / EUR X terug
- Winst uit onderneming (before aftrekken): EUR X
- Zelfstandigenaftrek: EUR X
- Startersaftrek: EUR X
- MKB-winstvrijstelling: EUR X
- Belastbare winst uit onderneming: EUR X
- Eigen woning aftrek: EUR X
- Belastbaar inkomen Box 1: EUR X
- Belastbaar inkomen Box 3: EUR X
- Verschuldigde inkomstenbelasting: EUR X
- Heffingskortingen: EUR X
- Voorlopige aanslag IB paid: EUR X
- Te betalen / terug te ontvangen IB: EUR X
- ZVW bijdrage: EUR X
- Voorlopige aanslag ZVW paid: EUR X
- Te betalen / terug te ontvangen ZVW: EUR X
- Total te betalen / terug te ontvangen: EUR X
## BTW-aangifte
[Content from nl-btw-return output]
- Registration type and period
- Rubriek 1a: Leveringen/diensten belast met hoog tarief (21%)
- Rubriek 1b: Leveringen/diensten belast met laag tarief (9%)
- Rubriek 1c: Leveringen/diensten belast met overige tarieven
- Rubriek 1d: Privégebruik
- Rubriek 1e: Leveringen/diensten belast met 0% of niet bij u belast
- Rubriek 2a: Verleggingsregelingen
- Rubriek 3a/3b: Prestaties naar/in het buitenland (ICP)
- Rubriek 4a/4b: Prestaties vanuit het buitenland
- Rubriek 5a: Verschuldigde omzetbelasting
- Rubriek 5b: Voorbelasting
- Rubriek 5c/5d/5e: Subtotaal, vermindering, totaal
- BUA correctie (besluit uitsluiting aftrek voorbelasting)
- ICP opgave reconciliation
## Aangifte Inkomstenbelasting
### Box 1 -- Inkomen uit werk en woning
[Content from nl-income-tax output]
- Winst uit onderneming:
- Omzet: EUR X
- Bedrijfskosten: EUR X
- Afschrijvingen: EUR X
- Winst vóór ondernemersaftrek: EUR X
- Zelfstandigenaftrek: EUR X
- Startersaftrek: EUR X
- MKB-winstvrijstelling: EUR X
- Belastbare winst: EUR X
- FOR dotatie: EUR X (if applicable)
- Inkomsten uit dienstbetrekking: EUR X (if applicable)
- Eigen woning:
- WOZ-waarde: EUR X
- Eigenwoningforfait: EUR X
- Hypotheekrente aftrek: EUR X
- Eigen woning saldo: EUR X
- Inkomen Box 1: EUR X
### Box 2 -- Inkomen uit aanmerkelijk belang
- Not applicable for eenmanszaak (flag if any AB income discovered)
### Box 3 -- Inkomen uit sparen en beleggen
- Peildatum 1 januari 2025:
- Banktegoeden: EUR X
- Beleggingen: EUR X
- Overige bezittingen: EUR X
- Schulden: EUR X
- Rendementsgrondslag: EUR X
- Peildatum 1 januari 2026: [same structure]
- Heffingsvrij vermogen: EUR X (EUR 57,000 single / EUR 114,000 fiscal partners -- 2025)
- Voordeel uit sparen en beleggen: EUR X
- Verschuldigde belasting Box 3: EUR X (36% in 2025)
### Heffingskortingen
- Algemene heffingskorting: EUR X (income-dependent phase-out)
- Arbeidskorting: EUR X (income-dependent, for winst uit onderneming)
- Total heffingskortingen: EUR X
### Verschuldigde belasting
- Box 1 belasting (schijventarief): EUR X
- Schijf 1 (EUR 0 - 38,441): 36.97%
- Schijf 2 (EUR 38,441 - 75,624): 49.50%
- Box 3 belasting: EUR X
- Totaal verschuldigde belasting: EUR X
- Minus heffingskortingen: EUR X
- Minus voorlopige aanslag IB: EUR X
- Te betalen / terug te ontvangen: EUR X
## Zorgverzekeringswet (ZVW)
[Content from nl-zvw output]
- Bijdrage-inkomen: EUR X
- ZVW percentage: 5.32%
- Maximum bijdrage-inkomen: EUR 71,628 (2025)
- ZVW bijdrage: EUR X
- Voorlopige aanslag ZVW paid: EUR X
- Te betalen / terug te ontvangen: EUR X
## Voorlopige Aanslag 2026
- Based on 2025 final IB + ZVW liability
- Recommended voorlopige aanslag IB 2026: EUR X
- Recommended voorlopige aanslag ZVW 2026: EUR X
- Action: request via MijnBelastingdienst or wait for Belastingdienst to issue
## Cross-skill Reconciliation
- BTW omzet vs IB winst omzet: [pass/fail]
- ZVW bijdrage-inkomen vs IB Box 1: [pass/fail]
- Voorlopige aanslag reconciliation: [pass/fail]
- BTW voorbelasting vs IB deductions: [pass/fail]
- Ondernemersaftrek computation chain: [pass/fail]
## Reviewer Attention Flags
[Aggregated from all upstream skills]
- T2 items requiring belastingadviseur confirmation
- Mixed-use expense percentages (auto, telefoon, internet)
- Werkruimte deduction (if claimed)
- Urencriterium confirmation
- Startersaftrek eligibility
- Any turnover approaching EUR 20,000 KOR threshold
- Any income approaching schijf boundary (EUR 38,441)
- FOR dotatie appropriateness
- Box 3 vermogen composition and categorisation (sparen vs beleggen vs overig)
## Positions Taken
[List with legislation citations]
- e.g., "Zelfstandigenaftrek claimed: EUR 2,470 -- Art. 3.76 Wet IB 2001, urencriterium confirmed by client"
- e.g., "Auto zakelijk gebruik 75% -- client-stated, kilometeradministratie available -- Art. 3.16 Wet IB 2001"
- e.g., "Laptop capitalised and depreciated at 20% p.a. over 5 years -- Art. 3.30 Wet IB 2001"
- e.g., "MKB-winstvrijstelling 13.31% applied -- Art. 3.79a Wet IB 2001"
- e.g., "Representatiekosten 80% limitation applied -- Art. 3.15 Wet IB 2001"
## Planning Notes for 2026
- Voorlopige aanslag recommendation (IB + ZVW)
- KOR threshold monitoring (if approaching EUR 20,000)
- Capital allowances continuing into 2026 (boekwaarde schedule)
- FOR stand and conversion planning (lijfrente aankoop)
- Any legislative changes affecting 2026 (Belastingplan 2026 measures, schijventarief changes)
- Urencriterium documentation reminder
## Client Action List
### Immediate (before 1 May 2026 -- IB filing deadline):
1. Review this return package with your belastingadviseur
2. File aangifte inkomstenbelasting via MijnBelastingdienst
3. Pay any te betalen amount for IB and ZVW
4. File Q4 2025 BTW-aangifte (if not yet filed) -- deadline was 31 January 2026
5. Request/adjust voorlopige aanslag 2026 via MijnBelastingdienst
### BTW filing calendar (quarterly):
- Q1 2026 (Jan-Mar): file by 30 April 2026
- Q2 2026 (Apr-Jun): file by 31 July 2026
- Q3 2026 (Jul-Sep): file by 31 October 2026
- Q4 2026 (Oct-Dec): file by 31 January 2027
### ICP opgave (if applicable):
- Monthly or quarterly (aligned with BTW filing frequency)
- Due same date as BTW-aangifte
### Ongoing:
1. Issue BTW-compliant facturen for all sales (Art. 35a Wet OB 1968)
2. Retain all purchase invoices and receipts (7-year bewaarplicht -- Art. 52 AWR)
3. Maintain kilometeradministratie if claiming auto expenses
4. Maintain urenadministratie for urencriterium
5. Monitor turnover for KOR threshold (EUR 20,000)
6. Track capital assets in the afschrijvingsstaat
7. Monitor FOR stand and plan lijfrente conversion before AOW-leeftijd
The final output is three files:
[client_slug]_2025_nl_master.xlsx -- Single master workbook containing every worksheet. Sheets include: Cover, BTW-aangifte (Q4 or Annual), IB-aangifte (Box 1/2/3), Afschrijvingsstaat, Bedrijfskosten Detail, ZVW Reconciliation, Voorlopige Aanslag 2026, Ondernemersaftrek Berekening, Cross-Check Summary. Use live formulas where possible -- e.g., IB omzet references the BTW turnover cell; ondernemersaftrek chain is formula-driven; Box 3 references peildatum amounts. Verify no #REF! errors. Verify computed values match the Python/computation model within EUR 1 before shipping.
reviewer_brief.md -- Single markdown file covering all sections from Section 4 above: executive summary, BTW, IB (all boxes), ZVW, voorlopige aanslag, cross-skill reconciliation, flags, positions, planning notes.
client_action_list.md -- Single markdown file with step-by-step actions: immediate filings and payments, quarterly BTW calendar for 2026, ongoing compliance reminders.
If execution runs out of context mid-build: produce whatever is complete, then state at the end which of the three files were not produced or are partial.
All files are placed in /mnt/user-data/outputs/ and presented to the user via the present_files tool at the end.
Inputs:
nl-freelance-intake -- structured intake package (JSON)nl-btw-return -- BTW-aangifte rubriek values and classification outputnl-income-tax -- IB-aangifte values and computation output (Box 1/2/3)nl-zvw -- ZVW bijdrage reconciliation outputOutputs: The final reviewer package. No downstream skill.
v1.0 (May 2026): Initial draft. Modelled on mt-return-assembly v0.1 adapted for Netherlands jurisdiction with three content skills (BTW-aangifte, IB-aangifte, ZVW).
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 a CPA, EA, tax attorney, or equivalent licensed practitioner in your jurisdiction) before filing or acting upon.
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Other Netherlands computations in the OpenAccountants Tax Library.
Rendered from the facts database. General reference only — confirm with a qualified professional before acting.
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