# Inkomstenbelasting Boxen > 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". Use when this capability is needed. - Skill: `tomevault-io/inkomstenbelasting-boxen` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/inkomstenbelasting-boxen` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/inkomstenbelasting-boxen/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/inkomstenbelasting-boxen --- # Inkomstenbelasting Boxen Use this skill to structure IB work with box-level completeness and risk checks. ## Scope - Box-based classification support (box 1, box 2, box 3) - Evidence mapping per box - Filing-readiness checklist and issue flags ## Boundaries - Do not decide final tax position without verified support. - Do not provide binding legal interpretation. - Keep uncertain positions explicitly labeled. ## Workflow 1. Identify income/asset categories and assign box context. 2. Reconcile supplied figures with supporting documents. 3. Flag missing support, anomalies, and prior-year carryover risks. 4. Build stepwise filing-preparation checklist. ## Official Source Verification For rates, thresholds, criteria, and deadlines: 1. Verify on `belastingdienst.nl`. 2. Verify legal references on `wetten.overheid.nl`. 3. Include URL and retrieval date in outputs. 4. Mark non-verified items as pending professional confirmation. ## Escalation Points Escalate when: - Substantial-interest or complex investment structures exist - Cross-border assets/income exist - Material discrepancies are unresolved - Time-sensitive filing risk is high ## Safety This skill supports tax workflow preparation only and does not provide fiscal advice. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/johnhout) — claim your Tome and manage your conversions.