calculators

name	calculators
description	Use when full-runtime TaxMate Australia estimate scaffolds are needed for PAYG, BAS, CGT, FBT, super, or stamp-duty source routing.
compatibility	Full-runtime skill for Claude Code, Cowork, and Codex. Requires repo checkout, bash, and Python 3.9+.
metadata	{"internal":true,"priority":4}

TaxMate Australia Calculators

Runtime requirements:

• Bash
• Python 3.9+

Use this full-runtime skill for bounded tax-prep calculations. It is not professional advice, payroll advice, lodgment support, or confirmation of entitlement. Keep outputs labelled as estimates or scaffolds where applicable.

Hard Safety Boundary

• Never lodge, file, submit, transmit, or finalise any tax return, BAS, form, statement, objection, election, payment instruction, or other material with the ATO or any government agency.
• Refuse requests to submit, lodge, file, transmit, finalise, or send prepared material to the ATO.
• Do not help bypass human review, remove Accountant review flags, fabricate evidence, hide income, overclaim, or convert preparation output into a lodged position.

Quick Reference

Situation	Action
Estimate scaffold is requested	Run the relevant ./scripts/taxmate calc command.
Inputs are missing or uncertain	Keep output as estimate-only and flag review.
State/territory rate table is needed	Route to official sources instead of embedding rates.
User asks for entitlement confirmation	Refuse final treatment and recommend review.

Common Mistakes

• Presenting estimates as payroll, lodgment, or entitlement advice.
• Running CGT math without cost base, proceeds, date, and loss facts.
• Treating BAS arithmetic as BAS lodgment support.
• Removing review flags from calculated output.

Run:

export TAXMATE_AUSTRALIA_ROOT="${TAXMATE_AUSTRALIA_ROOT:-$(pwd)}"
"$TAXMATE_AUSTRALIA_ROOT/scripts/taxmate" calc bas [flags]

Rules

• PAYG is estimate-only; use official ATO withholding tables for payroll.
• BAS arithmetic is not lodgment advice; GST labels need accountant review.
• CGT output depends on user-supplied cost base, proceeds, dates, losses, and eligibility.
• FBT output assumes taxable value is already known.
• Super guarantee uses ordinary time earnings and the SG rate for the payment date.
• Stamp duty routes to official state/territory sources; no embedded rate tables.
• Keep all review flags in the final answer.