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By johnhout
Automate Dutch tax workflows for individuals, freelancers, and BV companies by connecting document editing, database queries, and team communication across Google Docs, Notion, Microsoft 365, BigQuery, and Slack.
npx claudepluginhub johnhout/knowledge-work-belastingzakenValidate deductions and eligibility evidence
Draft bezwaar letter with deadlines and evidence
Prepare BTW aangifte workflow and controls
Prepare inkomstenbelasting workflow and checks
Build Dutch tax intake and dossier baseline
This skill should be used when users ask for deduction checks, allowance eligibility, or tax-regime qualification for Dutch filings. Trigger phrases include "aftrekposten", "deduction check", "kom ik in aanmerking", "tax credit NL", and "regeling controle".
This skill should be used when users ask for a Dutch tax intake, dossier setup, document checklist, or obligation mapping for particulier, ZZP, or BV contexts. Trigger phrases include "belasting intake", "tax intake", "welke documenten heb ik nodig", "build my tax dossier", and "map mijn aangifteplichten".
This skill should be used when users ask to draft a Dutch bezwaar letter, structure tax correspondence, or prepare argumentation against an assessment or decision. Trigger phrases include "bezwaarbrief", "maak bezwaar", "objection letter", "reactie op aanslag", and "tax correspondence NL".
This skill should be used when users ask for Dutch income tax support across box 1, box 2, and box 3. Trigger phrases include "IB aangifte", "inkomstenbelasting", "box 1/2/3", "income tax return NL", "voorbereiden aangifte", and "check mijn boxen".
This skill should be used when users ask about Dutch payroll tax workflows, loonheffingen periods, wage tax checks, social contribution controls, or WKR handling. Trigger phrases include "loonheffingen", "payroll tax NL", "werkkostenregeling", "WKR", and "periodieke payroll controle".
External network access
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Tax computation skills verified by licensed accountants, served via the hosted OpenAccountants MCP. Income tax, VAT/GST, payroll, formation, crypto, and cross-border across 190+ jurisdictions.
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A bilingual Dutch tax workflow plugin for Cowork and Claude Code. It supports full-spectrum Netherlands tax operations for particulier, ZZP, and BV use cases.
Important: This plugin supports tax workflows, not legal or fiscal advice. All outputs must be reviewed by a qualified Dutch tax professional before filing, payment, objection, or legal submission.
.zip from GitHub Releases.
| Command | Description |
|---|---|
/belastingadviseur:intake | Intake and dossier setup for taxpayer profile, obligations, and missing documents |
/belastingadviseur:tax-calendar | Build a verified tax deadline calendar for the selected year/profile |
/belastingadviseur:ib-aangifte | Prepare inkomstenbelasting workflow (box 1/2/3 context, checks, and filing readiness) |
/belastingadviseur:btw-aangifte | Prepare and check BTW return workflow for monthly/quarterly/annual obligations |
/belastingadviseur:vpb-aangifte | Prepare vennootschapsbelasting workflow and pre-filing control checklist |
/belastingadviseur:loonheffingen | Prepare payroll tax workflow (loonheffing, wage tax, social contributions, WKR checks) |
/belastingadviseur:aftrekcheck | Validate relevant deductions, credits, and scheme eligibility with evidence checklist |
/belastingadviseur:bezwaar-brief | Draft a Dutch bezwaar letter template with legal references and deadline controls |
| Skill | Description |
|---|---|
belasting-intake-en-dossiervorming | Intake framework, document requests, taxpayer segmentation, and dossier quality controls |
inkomstenbelasting-boxen | Box-based IB workflow (box 1/2/3), evidence mapping, and risk checks |
omzetbelasting-btw | VAT period handling, output/input VAT checks, ICP logic, and correction flows |
vennootschapsbelasting-vpb | Corporate tax workflow, fiscal profit bridge, and supporting schedules |
loonheffingen-en-werkkosten | Payroll tax filing workflow including WKR, payroll evidence, and periodic controls |
aftrekposten-en-regelingen | Deduction and allowance qualification workflow for individuals and businesses |
bezwaar-en-correspondentie | Objection structure, argument mapping, and correspondence quality standards |
officiele-bronverificatie | Mandatory verification protocol for rates, dates, thresholds, and legal references |
This plugin enforces an official-source-first policy before any date/rate/threshold/legal claim:
belastingdienst.nl and/or wetten.overheid.nl.YYYY-MM-DD) in output.If placeholders like ~~boekhouding or ~~data warehouse appear, see CONNECTORS.md.
Each command below can be tested with the included test data files.
/belastingadviseur:intake zzp 2025
Upload klanten.csv. Builds a complete dossier for Jan de Vries (ZZP) with obligations, missing documents, and risk flags.
/belastingadviseur:tax-calendar 2025 bv
Upload klanten.csv. Generates a verified deadline calendar for Bakkerij Broodjes BV covering BTW, VPB, and loonheffingen filing dates.
/belastingadviseur:ib-aangifte 2025 particulier
Upload particulier_maria_inkomsten_2025.csv and particulier_maria_box3_2025.csv. Walks through box 1 (salary, eigen woning, partner), box 3 (vermogen incl. crypto), and checks completeness.
/belastingadviseur:btw-aangifte 2025-Q2 zzp
Upload zzp_pieter_btw_q2_2025.csv. Processes Q2 VAT including ICP transactions (DE, BE, CH), reverse-charge, and open invoices.
/belastingadviseur:vpb-aangifte 2025
Upload bv_broodjes_resultatenrekening_2025.csv. Builds the fiscal profit bridge from commercial result to taxable profit with supporting schedules.