taxapp.nz MCP server

taxapp.nz MCP server

Ask your AI app about your Tax App records in plain words: income, expenses, rental properties and New Zealand tax. Where your organisation allows it, it can add new records too.

Tax App is a New Zealand app for households, sole traders and rental-property owners. It keeps income, expenses, contacts, rental properties and bank reconciliation in one place and works out indicative tax from Inland Revenue's rates. This MCP server is a remote server hosted by Tax App; this repository describes it and holds no code.

• Server address: https://mcp.taxapp.nz/mcp (remote, Streamable HTTP)
• MCP Registry name: nz.taxapp/taxapp
• Full guide: https://taxapp.nz/guides/ai-assistants/

Sign-in required

Every request needs you to sign in to Tax App. Your AI app opens the Tax App sign-in page when you connect; there is no key or password to copy into it.

Before you connect

chooses Read only or Read and add records.

1. You need a Tax App account. Sign up free.
2. An owner of your organisation turns AI connectors on in Settings > AI connectors (or while connecting) and

1. Add the server in your AI app and sign in to Tax App when asked.

Configure it

VS Code (GitHub Copilot)

Add it from the @mcp gallery, or put this in your mcp.json:

{
  "servers": {
    "taxapp": {
      "type": "http",
      "url": "https://mcp.taxapp.nz/mcp"
    }
  }
}

Start the server, choose Allow when VS Code asks to sign in, sign in to Tax App, and tick the organisations it may reach.

Other AI apps

How to use it

Ask in plain words, for example:

• "What is my estimated tax for this year?"
• "Which expenses did I record for the rental in March?"
• "Which bank transactions still need sorting?"
• "Add a $120 plumber bill for 12 Smith Street."
• "Add Jane Brown as a tenant at 12 Smith Street from 1 May at $650 a week."

The figures come straight from your records. The answer is written by the AI, so check anything that matters in the app. When a detail is unclear, such as which contact, property or expense account you mean, the AI app shows you the closest matches and asks.

Tax years are New Zealand income years (1 April to 31 March), named by the year they end in. Money is in New Zealand dollars.

Tools

Every tool is annotated: the read tools are read-only, and no tool is destructive. Adding is refused unless an owner chose Read and add records. Adding is safe to repeat: the same details sent again return the record already made.

What it cannot do

Shortened. The full README is on GitHub.