WOZ value objection check and OZB property tax
woz_objection_netherlandsRead-onlyIdempotent
Checks whether objecting to a Dutch WOZ value (the municipal home valuation) is worth it: compares the WOZ value with comparable sales by price per m², and shows what a lower value saves a year in eigenwoningforfait (Box 1) and OZB property tax, and the 6-week objection deadline. Without comparable sales it still gives the yearly OZB and how objecting works. Objecting is free; the decision (WOZ-beschikking) says the value and the date.
Tool call template
Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.
{
"id": 1,
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"arguments": {
"woz_value": "<woz_value>"
},
"name": "woz_objection_netherlands"
}
}Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| woz_year | No | The year on the WOZ decision. Default 2026. | |
| woz_value | Yes | WOZ value on the decision, in euros | |
| comparables | No | Comparable homes sold around the valuation date (1 January of the year before the WOZ year): price and living area. Two or more make the comparison usable. | |
| ozb_rate_pct | No | OZB owner rate of the municipality, % of the WOZ value (on the tax assessment). Default 0.1. | |
| decision_date | No | Date on the WOZ decision, YYYY-MM-DD, for the deadline (optional) | |
| living_area_m2 | No | Living area of the home in m² (needed to compare with sales) | |
| taxable_income | No | Box 1 taxable income, to work out the tax rate on the eigenwoningforfait. Default: the 37.56% rate. |