Australia

“I focus on delivering audits that go beyond compliance – providing management with insights and supporting stronger governance.”

Jigs Bellosillo

Partner, Audit & Assurance

Jigs believes that audits work best when grounded in open communication, mutual respect and a shared commitment to doing things right. She places strong emphasis on integrity, transparency and building trusted relationships – ensuring the audit process delivers value and a positive experience for her clients.

Jigs has a wealth of audit experience, spanning both the public and private sectors in the Philippines and New Zealand. Moving to Auckland in 2010, she’s built her reputation as an audit expert and in May 2025 became a partner of William Buck’s Audit & Assurance practice.

Jigs brings a strong governance perspective to her work, shaped by her experience as a board trustee and through regular engagement with boards and audit committees across a variety of sectors. She understands the importance of transparency, accountability and informed oversight – whether in not-for-profit setting or complex commercial environments. This background allows her to align assurance work with governance expectations and support decision-makers with clear, reliable insights.

Jigs is known for making the audit process approachable and purposeful. She leads with a calm, collaborative style and focus on what matters to the organisation. Her goal is to bring clarity, build trust, and create value beyond the audit report.

The Facts:

Core Expertise

  • Auditing and assurance services
  • Financial reporting
  • Corporate governance
  • Internal controls and operational efficiency
  • Risk-based audit planning and execution

Qualifications & Associations

  • Member of CPA Australia
  • Member of CPA Australia, New Zealand Divisional Council
  • Bachelor of Science in Accountancy

Industries & Specialisations

  • Public and private sector entities
  • Industry experience across: manufacturing, retail, distribution logistics, real estate and property development, retirement villages and aged care, tourism and hospitality
  • Not-for-profit and charitable organisations

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