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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "dutch-tax": {
      "type": "http",
      "url": "https://nltaxcalculator.nl/dutch-tax/api/mcp"
    }
  }
}

claude mcp add --transport http dutch-tax https://nltaxcalculator.nl/dutch-tax/api/mcp

[mcp_servers.dutch-tax]
url = "https://nltaxcalculator.nl/dutch-tax/api/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "dutch-tax": {
      "type": "remote",
      "url": "https://nltaxcalculator.nl/dutch-tax/api/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "dutch-tax": {
      "type": "http",
      "url": "https://nltaxcalculator.nl/dutch-tax/api/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=dutch-tax&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbmx0YXhjYWxjdWxhdG9yLm5sL2R1dGNoLXRheC9hcGkvbWNwIn0%3D"
}

{
  "servers": {
    "dutch-tax": {
      "type": "http",
      "url": "https://nltaxcalculator.nl/dutch-tax/api/mcp"
    }
  }
}

{
  "mcpServers": {
    "dutch-tax": {
      "httpUrl": "https://nltaxcalculator.nl/dutch-tax/api/mcp"
    }
  }
}

extensions:
  "dutch-tax":
    enabled: true
    name: "dutch-tax"
    type: streamable_http
    uri: "https://nltaxcalculator.nl/dutch-tax/api/mcp"
    timeout: 300

Quality 89 / 100new

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-06-18; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene100 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations13 of 13 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 4,325 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool history recorded for 4 of the 7 days needed

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

13 tools, about 4,325 tokens to load them all · tool set 3ef30e164f6a · tools last changed 2026-10-18 · checked 2026-10-21 01:06 UTC

Tool changes

2026-10-18gross_salary_for_target_netadded
Reverse salary calculation for salary negotiations in the Netherlands (2026): the gross annual and monthly salary needed to take home a given net amount, with or without holiday allowance and the 30% ruling.
2026-10-18box3_actual_return_estimateadded
When the actual return on Box 3 assets was lower than the notional return, the Belastingdienst taxes the actual return instead (following the Supreme Court rulings). For one tax year from 2017 to 2026 this compares the notional Box 3 tax with the tax on the actual return (interest, dividends, rent and value changes minus interest paid), and estimates the difference that could be refunded and which procedure applies to that year. Read-only calculation; it submits nothing and is not tax advice.
2026-10-18benefits_toeslagen_checkadded
Estimates which main Dutch household benefits are likely for 2026, from income, assets, rent and children's ages, with indicative yearly amounts. Read-only; it does not apply for anything, and the Belastingdienst decides eligibility. Covers healthcare allowance (zorgtoeslag), rent allowance (huurtoeslag), child benefit (kinderbijslag), child budget (kindgebonden budget), the conditions for childcare allowance (kinderopvangtoeslag), the working-parent tax credit (IACK) and exemption from municipal taxes (kwijtschelding).
2026-10-18mortgage_netherlandsadded
For buying a home in the Netherlands in 2026: an indicative maximum mortgage on income, the monthly annuity payment, the first-year mortgage interest deduction worked out with the real Box 1 calculation (eigenwoningforfait, the deduction capped at the second-bracket rate), net monthly cost and whether NHG (national mortgage guarantee) is possible.
2026-10-18freelancer_tax_netherlandsadded
Estimates 2026 Dutch income tax for a self-employed person (ZZP / eenmanszaak) from yearly revenue and business costs: profit, the self-employed deduction (1,225-hour criterion), starters deduction, SME profit exemption, tax credits, the separate income-related healthcare contribution (Zvw) and the income left after tax. Also shows the VAT charged on the revenue. Read-only calculation; it files nothing and is not tax advice.
2026-10-18income_tax_return_netherlandsadded
Estimates the whole 2026 Dutch income tax return: Box 1 salary tax with the tax credits and the 30% ruling, the own home (eigenwoningforfait and mortgage interest, with the best split between fiscal partners), Box 3 on savings and investments, and tax-treaty relief for real estate abroad (exempt in the Netherlands). With the payroll tax already withheld it says whether you get money back or have to pay.

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 83 / 100

no-repository

provenance55

liveness100

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-100% +updated-2d-ago -no-repository

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://nltaxcalculator.nl/dutch-tax/api/mcp` streamable-http	none	yes	100%	450 ms	2025-06-18	2026-10-20

Tools (13)

`benefits_toeslagen_check`read-only	Estimates which main Dutch household benefits are likely for 2026, from income, assets, rent and children's ages, with indicative yearly amounts. Read-only; it does not apply for anything, and the Belastingdienst decides eligibility. Covers healthcare allowance (zorgtoeslag), rent allowance (huurtoeslag), child benefit (kinderbijslag), child budget (kindgebonden budget), the conditions for childcare allowance (kinderopvangtoeslag), the working-parent tax credit (IACK) and exemption from municipal taxes (kwijtschelding).
`box3_actual_return_estimate`read-only	When the actual return on Box 3 assets was lower than the notional return, the Belastingdienst taxes the actual return instead (following the Supreme Court rulings). For one tax year from 2017 to 2026 this compares the notional Box 3 tax with the tax on the actual return (interest, dividends, rent and value changes minus interest paid), and estimates the difference that could be refunded and which procedure applies to that year. Read-only calculation; it submits nothing and is not tax advice.
`box3_wealth_tax`read-only	Box 3 tax on savings and investments in the Netherlands for 2026 (the notional-return system): the tax-free allowance, the notional return on savings, investments and debts, and the 36% tax. Optionally for fiscal partners (double allowance).
`dutch_tax_changes_2027`read-only	Compares income tax on a gross salary in 2026 with the Belastingplan 2027 proposal (presented on Prinsjesdag 2026, a proposal until Parliament votes): brackets and tax credits, and the 30% ruling dropping to 27% unless it started before 2024.
`freelancer_tax_netherlands`read-only	Estimates 2026 Dutch income tax for a self-employed person (ZZP / eenmanszaak) from yearly revenue and business costs: profit, the self-employed deduction (1,225-hour criterion), starters deduction, SME profit exemption, tax credits, the separate income-related healthcare contribution (Zvw) and the income left after tax. Also shows the VAT charged on the revenue. Read-only calculation; it files nothing and is not tax advice.
`gross_salary_for_target_net`read-only	Reverse salary calculation for salary negotiations in the Netherlands (2026): the gross annual and monthly salary needed to take home a given net amount, with or without holiday allowance and the 30% ruling.
`income_tax_return_netherlands`read-only	Estimates the whole 2026 Dutch income tax return: Box 1 salary tax with the tax credits and the 30% ruling, the own home (eigenwoningforfait and mortgage interest, with the best split between fiscal partners), Box 3 on savings and investments, and tax-treaty relief for real estate abroad (exempt in the Netherlands). With the payroll tax already withheld it says whether you get money back or have to pay.
`job_loss_planner`read-only	For an employee whose Dutch contract ends: the statutory transition payment (transitievergoeding), unemployment benefit (WW) amount and duration under UWV rules, and for expats the highly skilled migrant / Blue Card search period end date and the last start date for a new job to keep the 30% ruling.
`mortgage_netherlands`read-only	For buying a home in the Netherlands in 2026: an indicative maximum mortgage on income, the monthly annuity payment, the first-year mortgage interest deduction worked out with the real Box 1 calculation (eigenwoningforfait, the deduction capped at the second-bracket rate), net monthly cost and whether NHG (national mortgage guarantee) is possible.
`net_salary_netherlands`read-only	Gross-to-net salary in the Netherlands for 2026: income tax with the general and labour tax credits, optional 8% holiday allowance on top, the 30% ruling (with its salary norm and cap) and a pension contribution. Returns net per month and per year and the effective tax rate. Single employee below state pension age.
`transfer_tax_netherlands`read-only	Overdrachtsbelasting in 2026 when buying a home in the Netherlands: 2% for a home you live in, 0% for first-time buyers aged 18-34 up to a €555,000 price, 8% for other homes.
`us_tax_for_americans_in_netherlands`read-only	For a US citizen or green-card holder with a Dutch salary: Dutch tax, the creditable part (AOW/Anw premiums are not creditable under the US-Dutch totalization agreement), and the US tax for 2026 under the Foreign Earned Income Exclusion and under the Foreign Tax Credit, incl. the child tax credit and its refundable part.
`visa_salary_check`read-only	Checks whether a salary meets the 2026 IND salary requirement for a Dutch highly skilled migrant (kennismigrant) permit or an EU Blue Card. Holiday allowance does not count; a 13th month counts only when paid monthly. Also checks the 30% ruling salary norm.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "nl.nltaxcalculator/dutch-tax",
  "title": "NL Tax Calculator",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://nltaxcalculator.nl/dutch-tax/api/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.1.0",
  "websiteUrl": "https://nltaxcalculator.nl/dutch-tax/ai-assistants",
  "description": "Dutch tax: net salary, full tax return, Box 3 and refunds, ZZP, mortgage, toeslagen, visa salary."
}