au-payg-instalment-variation SKILL.md skillA

au-payg-instalment-variation from ryanduguid/australian-accounting-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add ryanduguid/australian-accounting-skills/au-payg-instalment-variation@git:20261014.ea4ffde

Pins git:20261014.ea4ffde in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
ryanduguid/australian-accounting-skills
Path
.claude/skills/au-payg-instalment-variation/SKILL.md
Versions recorded
3
Latest version
git:20261014.ea4ffde, committed Oct 14, 2026
First version recorded
Sep 24, 2026
Size
5,581 bytes
Repository stars
3
License
Apache-2.0

Use when preparing or reviewing a PAYG instalment variation for an Australian taxpayer, including the estimate of instalment income and tax, the varied amount or rate, credits claimed and the general interest charge shortfall test.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# PAYG instalment variation workpapers

## Inputs

The instalment notice or activity statement showing the option used (amount at T7 or rate at T2), instalments paid or varied earlier in the year, year-to-date management accounts or ledgers, the prior year return, a documented estimate of instalment income (gross business and investment income excluding GST) and of tax for the year, and any prior variation workings.

## Workflow

1. Identify the instalment option in use, every instalment already paid or varied this year, and any credit claimed at 5B in an earlier quarter. Tie them to the ATO account or activity statements.

2. Build the estimate of instalment income for the full year from year-to-date actuals plus a documented forecast. Record each assumption and its source; an unsupported forecast leaves the variation `UNVERIFIED`.

3. Estimate the tax on that income for the year, using the ATO's online PAYG instalments tool or a manual estimate, and show the rates and offsets applied with their sources.
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add ryanduguid/australian-accounting-skills/au-payg-instalment-variation@sha256:270a961cc4806ecd

The line at the top of this page pins the label git:20261014.ea4ffde, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_2t6jdclu2arqczby.svg)](https://markdownregistry.com/a/art_2t6jdclu2arqczby)

2 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 3 versions of this file, between Sep 24, 2026 and Oct 14, 2026, about one every 10 days.

versioncommittedcommitsizeaudit
git:20261014.ea4ffde latest2026-10-14 ea4ffde 5,581 BA view · diff
git:20260929.d54ec022026-09-29 d54ec02 5,292 BA view · diff
git:20260924.269c33c2026-09-24 269c33c 5,096 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (5581 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

ryanduguid/australian-accounting-skills · 3 stars · license Apache-2.0 · pushed 2026-10-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_2t6jdclu2arqczby
GET https://markdownregistry.com/api/v1/resolve?ref=ryanduguid/australian-accounting-skills/au-payg-instalment-variation
GET https://markdownregistry.com/api/v1/blob/270a961cc4806ecd456bafa87c2805382bc2299be343f2ce0913d5978f25b2f9

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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