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ryanduguid/README.md

Ryan Duguid

I'm an accountant in Newcastle, Australia. I build open-source tools for Australian tax, payroll and financial reporting.

DrDebits APES 110 aligned guardrails Open-source Australian accounting tools Ozzit: 134 native Excel LAMBDAs Python 3.10 or later Model Context Protocol

Selected work

  • payday-super-checker checks super contribution timing and prepares exceptions for review.
  • xero-trial-balance-export exports reconciled Xero trial balances to CSV for Power BI, Excel and pandas.
  • Ozzit provides 134 native Excel LAMBDA functions for financial modelling and GST arithmetic.
  • accounting-excel-toolkit contains Power Query and VBA utilities for Australian ledger exports.

See the full project catalogue and worked examples. Canonical index: llms.txt.

The projects use synthetic public examples and support professional review. They do not lodge or write to ledgers.

Background

  • Provisional member of Chartered Accountants ANZ
  • SAP S/4HANA certified in FI and CO
  • Xero specialist certification (Level 3)

The Aus Accounting MCP is published on PyPI. I have also contributed to the Meltano SDK and OpenAccountants.

Portfolio · Evidence and assurance · Email

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  1. xero-trial-balance-export xero-trial-balance-export Public

    Export reconciled Xero trial balances to validated CSV for Power BI, Excel and pandas.

    Python

  2. payday-super-checker payday-super-checker Public

    Experimental tool for checking Payday Super timing and preparing exceptions for review.

    Python

  3. aus-accounting-mcp aus-accounting-mcp Public

    Local MCP server for Australian accounting review: ATO small-business benchmarks, Payday Super 2026, refused Division 7A and synthetic SBR fixtures. Not advice.

    Python

  4. workpaper-review-gate workpaper-review-gate Public

    Stop incomplete workpapers reaching manager review. Deterministic readiness gate for Australian public-practice packs. Not advice.

    Python