# Vakantiedagen Berekenen 2026 — Vier Maal Uw Weekuren

Source page: https://valem.run/calculators/netherlands/holiday-entitlement

Article 7:634 lid 1 of the Burgerlijk Wetboek gives at least four times the agreed weekly working time — in hours, not days. A 40-hour week earns 160 hours, which is 20 eight-hour days; a 36-hour week over four days earns 144 hours, which is 16 nine-hour days. Both are four weeks.

**Tax year:** 2026

## How it is calculated

*"aanspraak op vakantie van ten minste vier maal de overeengekomen arbeidsduur per week of, als de overeengekomen arbeidsduur in uren per jaar is uitgedrukt, van ten minste een overeenkomstige tijd."* The Netherlands is the only country in this family whose statutory entitlement is a number of **hours**. The familiar "20 vakantiedagen" is nowhere in the article — it is what 4 × 40 hours happens to come to when a day is eight hours long.

**Which is why the day count misleads anyone not on a 5 × 8 week.** Thirty-six hours over four nine-hour days is 144 vakantie-uren, and 144 ÷ 9 is **16 days**. Sixteen is not less leave than twenty; it is the same four weeks, measured in longer days. A calculator that reports "20 days" to everyone has quietly changed the unit, and an employer tracking hours against a day-based expectation is the usual way this goes wrong.

**Part of a year is proportional, and the statute says so.** Lid 2: leave for part of a year is *"een evenredig gedeelte"* of the full-year entitlement — so unlike Austria, the Netherlands does pro-rate. Lid 3 lets a collective agreement compute it in whole months for someone leaving after at least a month, which this page does not model. Most Dutch contracts also grant **bovenwettelijke** vakantie-uren on top of this minimum, and those expire on different terms from the statutory ones.

## Worked example

With Agreed hours per week of 40, this model computes Days Entitled of 20.

## Inputs

| Name | Label | Type |
| --- | --- | --- |
| `hoursPerWeek` | Agreed hours per week | number |
| `daysPerWeek` | Days you spread them over | number |
| `leaveYearStart` | Leave year starts (YYYY-MM-DD) | string |
| `leaveYearEnd` | Leave year ends (YYYY-MM-DD) | string |
| `workStart` | First day worked in it (YYYY-MM-DD) | string |
| `workEnd` | Last day worked in it (YYYY-MM-DD) | string |
| `daysTaken` | Days already taken | number |

## Sources

- [Burgerlijk Wetboek Boek 7, art. 634 — wetten.overheid.nl (vier maal de overeengekomen arbeidsduur per week; lid 2's evenredig gedeelte)](https://wetten.overheid.nl/BWBR0005290/2026-01-01/0/Boek7/Titeldeel10/Afdeling3/Artikel634) (checked 2026-10-11)

## What this page claims

The Valem engine reproduces this model's formula through 7 self-test cases. That shows internal consistency, not that the formula matches current law; the cited sources are the evidence for that. Estimate, not tax advice.

## For agents

- Model manifest (formula, constants, test vectors): https://valem.run/calculators/netherlands/holiday-entitlement.json
- Compute by URL: https://valem.run/calculators/netherlands/holiday-entitlement.json?hoursPerWeek=40
- MCP: https://valem.run/mcp/calculators (call `calculate` with calculator `netherlands/holiday-entitlement`)