IR3 Individual Income Tax Return (NZ, 2026) — myIR auto-filing Agent Skill

File a New Zealand individual IR3 income tax return for the 2026 tax year by driving the Inland Revenue myIR portal…

Context cost
54.3k tokensestimated from the bundle, loaded when it triggers
Bundle
7 of 8 fileshanded out here; the rest is at its source
Licence
not declarednone named by its author
Last change
—no release on file
Servers it uses
Noneruns standalone

What it does

File a New Zealand individual IR3 income tax return for the 2026 tax year by driving the Inland Revenue myIR portal (https://myir.ird.govt.nz/) in the browser. Use whenever the user mentions an IR3, NZ tax return, IRD return, "doing my taxes" or "filing my taxes" in a NZ context, residual income tax, IETC, PIE tax adjustment, ACC earners' levy, schedular payments, or provisional tax — even if they do not say "IR3" by name.

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

automationbrowser

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md16.5 kB · preview
--- name: ir3-tax-return compatibility: Requires a browser-automation runtime that can navigate URLs, click elements, type into form fields, take screenshots, and read on-screen text — for example Claude for Chrome or a Computer-Use environment. In a non-browser runtime, fall back to Section 12 ("Fallback — no browser") and produce a worksheet the user transcribes manually. ---
7# IR3 Individual Income Tax Return (NZ, 2026) — myIR auto-filing
8
9This skill files a New Zealand individual **IR3 income tax return** for the year ended **31 March 2026** by driving Inland Revenue's official **myIR portal** at https://myir.ird.govt.nz/. It is grounded in the official **IR3G (March 2026)** guide whose full text is bundled at references/IR3G-2026.txt.
10
11The skill operates the browser session. The user supplies authentication, supplies any data IRD hasn't pre-populated, and gives explicit consent before anything is submitted.
12
13---
14
15## 1. Boundaries — read this first
16
17These limits exist because filing a tax return is a legal declaration and the data is sensitive. Do not relax them without an explicit user instruction in the same turn.
18
19- **Never type a password, RealMe credential, MFA code, or 2FA token.** Always pause and let the user enter these themselves. Say so out loud: "I'll wait — please complete RealMe sign-in. Tell me when you're back at the myIR home screen."
20- **Never click the final "Submit" / "File return" / declaration-acceptance button without an explicit fresh "yes submit" from the user in the same turn.** Pre-existing consent is not sufficient. The IR3 declaration (Question 42) is a legal statement that the return is true and correct; only the user can swear to that.
21- **Never invent a value to fill a blank field.** If a number is missing and IRD hasn't pre-populated it, ask the user. If they don't know, pause and wait — don't guess.
22- **Never invent rates or thresholds.** Always read them from references/worksheets-2026.md. The 2026 figures differ from prior years.
23- **Treat every value on screen as confidential.** Don't paraphrase the user's IRD number, bank account number, or income figures into chat unless necessary to confirm one specific action. Don't write any of this data to a file outside the active myIR session.
24- **Don't skip past anything you don't understand.** Screenshot, describe what you see, and ask the user to clarify.
25- **If something looks wrong** (figures don't reconcile, a screen doesn't match what's expected, a value the user gave conflicts with what IRD has pre-populated), stop and surface the discrepancy. Don't paper over it.
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md2,668 words
Files7
Licencenot declared
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈300
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
53,950
on trigger
The instruction body and 6 supporting files, read only when the skill fires.
27.1%
of a 200k window
Ten skills this size would not fit in the window together.
050k100k150k200k context window

54.3k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

The download carries 7 of the 8 files in its source folder; the list here names 7 files, 217.0 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in. The other one is not in the download — listed after these, with why.

  • SKILL.md16.5 kB
  • README.md4.3 kB
  • evals/evals.json7.2 kB
  • references/form-questions.md12.0 kB
  • references/IR3G-2026.txt155.1 kB
  • references/myir-navigation.md11.7 kB
  • references/worksheets-2026.md10.2 kB

Not in the download

Not carried is a type a skill download does not hold. Marked read: its SKILL.md or scripts name the file, so without it the skill works only in part. Take it from its source.

  • references/IR3G-2026.pdfread · not carried
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the download is 7 files — not the whole of its source: 1 file is left out, and the skill reads it. It is listed under the files, with why.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# IR3 Individual Income Tax Return (NZ, 2026) — myIR auto-filing · 54.3k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/ir3-individual-income-tax-return-nz-2026-myir-aut/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/ir3-individual-income-tax-return-nz-2026-myir-aut" ] && { [ ! -e .claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut ] || { mv .claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/ir3-individual-income-tax-return-nz-2026-myir-aut" .claude/skills/ && echo "Installed .claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add cgbarlow/ir3-individual-income-tax-return-nz-2026-myir-aut

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/ir3-individual-income-tax-return-nz-2026-myir-aut/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/ir3-individual-income-tax-return-nz-2026-myir-aut" ] && { [ ! -e ~/.claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut ] || { mv ~/.claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/ir3-individual-income-tax-return-nz-2026-myir-aut" ~/.claude/skills/ && echo "Installed ~/.claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/ir3-individual-income-tax-return-nz-2026-myir-aut/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as ir3-tax-return in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, ir3-individual-income-tax-return-nz-2026-myir-aut. Not in this download: 1 file of its source, which its SKILL.md or scripts read (which one, and why). Take it from its source.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Versionnot versioned
Publishedno release date on file
PriceFree
Referencecgbarlow/ir3-individual-income-tax-return-nz-2026-myir-aut

Versions

Its author publishes no version number, so there is nothing here to pin to: what you install is the folder as it stands today. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

Pinning

Nothing to pin to: this skill carries no version number of its own. What you install is what the folder holds on the day you install it.

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