About AIMS Australia Tax Accountants
Established in Melbourne in 2012, AIMS Australia Tax Accountants is a CPA public practice and registered tax agent firm providing specialist Australian tax support to clients in Australia and overseas, particularly where matters involve cross-border complexity, residency issues, Australian property and technically demanding compliance obligations.
Established in
Melbourne Since 2012
CPA
Public Practice
Registered Tax Agent
No. 24892530
Senior-Led
by an FCPA
FOR AUSTRALIAN TAX MATTERS
Beyond Routine Compliance
A structured approach to complex Australian tax matters
AIMS Australia Tax Accountants is an Australian tax practice focused on matters that require more detailed analysis than routine tax return preparation.
Australian tax matters with cross-border dimensions
The firm assists clients in Australia and overseas where Australian tax outcomes may be affected by tax residency, intemational movement, foreign income or assets, Australian property, capital gains events, prior-year compliance or ATO correspondence.
Careful analysis before a position is adopted
Each engagement is individually scoped, with relevant facts, supporting records, assumptions and applicable Australian tax law considered before a tax position is adopted, advice is provided or a submission is prepared.
Clearly defined professional boundaries
The firm's work is confined to Australian tax matters within the agreed engagement scope. Foreign tax, legal, migration, investment and financial-product advice remains outside scope unless separately agreed and provided by an appropriately qualified adviser.
Practice Principles
Senior Oversight
Complex engagements receive senior oversight appropriate to their technical complexity, materiality and professional risk.
Evidence-Led Analysis
Australian tax positions are developed by reference to the available facts, supporting documentation and applicable Australian tax law.
Australian Tax Focus
Where a client’s circumstances extend across jurisdictions, the firm’s role remains focused on the Australian tax consequences. Advice concerning foreign-country taxation remains the responsibility of an appropriately qualified adviser unless separately agreed.
Clearly Defined Engagements
Each engagement is governed by a clearly defined scope, including relevant exclusions, information requirements, professional fees and payment terms, before substantive professional work commences.
Managing Partner
Nika Widanage, FCPA
Nika Widanage is the Managing Partner of AIMS Australia Tax Accountants. After completing her bachelor’s and master’s degree at Monash University and gaining professional experience in Australian tax practices, she developed a focused practice in technically complex Australian cross-border tax matters.
Her work centres on Australian tax issues affecting expatriates, foreign residents, globally mobile professionals, Australian property investors and private clients whose income, assets, employment arrangements or residency circumstances extend across jurisdictions and income years. Nika combines detailed technical research with hands-on experience in reviewing Australian tax residency, foreign income, investments, property, capital gains and employee equity across multiple
countries. Her work extends beyond routine tax return preparation to separately scoped technical advice, historical compliance reviews and ATO matters requiring careful analysis of the complete factual history and supporting evidence.
Areas of professional focus include:
- Australian tax residency and residency-transition reviews
- Double Tax Agreement considerations
- Australian reporting of foreign income and foreign income tax offsets
- Employee share schemes, RSUs and equity arrangements
- Australian property and capital gains tax
- CGT event I1 and the consequences of ceasing Australian tax residency
- Global investments
- Multiple overdue lodgments and historical compliance matters
- Amendments, objections and ATO correspondence
- Private binding ruling applications
Technical Approach and Professional Method
Nika’s professional approach combines detailed technical research with practical experience in reviewing assets, income and residency issues across multiple jurisdictions. She examines the relevant facts, timing, ownership arrangements, documentary evidence and Australian tax provisions before an Australian tax position is adopted.
Her objective is to identify a position that is technically supportable, appropriately documented and clearly explained in practical terms. Where advice is sought sufficiently early, relevant Australian tax implications can be considered before a proposed relocation, transaction or investment decision is implemented.
Her ongoing technical research and professional writing support a close engagement with emerging Australian and international tax developments relevant to expatriates, private clients and internationally mobile families. Secure digital systems enable AIMS Australia Tax Accountants to work with clients located in Australia and overseas.
ACCOUNTING TIMES PROFILE
Nika Widanage on Cross-Border Tax Complexity
In an interview published by Accounting Times, Nika discusses her professional development, AIMS Australia Tax Accountants’ focus on complex Australian tax residency and cross-border matters, and the importance of combining technical analysis with clear client communication.
The profile also covers technical research, secure technology, forward-looking advice and the practical
challenges of managing assets, income and residency issues across multiple jurisdictions.
Article title:
Nika Widanage | Award-Winning FCPA Focusing on Cross-Border Tax Complexity
accounting
times
A Specialist Australian Tax Practice
Founded with technical focus
The firm was established to provide careful, technically focused Australian tax support for matters that extend beyond a standard tax return.
Who we assist
Clients include expatriates, foreign residents, non- residents, Australian property investors and individuals with complex Australian tax obligations.
Evidence-based approach
Our work is guided by careful review of residency history, income sources, asset ownership, supporting records and relevant ATO correspondence.
Cross-border capability
We assist where Australian tax outcomes are shaped by foreign income, overseas tax systems, treaty issues or international movement.
Complex compliance matters
The practice supports technically complex tax return and advisory matters, including prior-year lodgements, CGT and residency-related issues.
Led by Nika Widanage, FCPA and Registered Tax Agent
Professional Background & Focus
Nika Widanage is the Managing Partner of AIMS Australia Tax Accountants, an FCPA and Registered Tax Agent. She founded AIMS Australia in 2012 to provide specialised Australian tax support for clients whose affairs extend beyond standard tax return preparation. Her work is focused on complex Australian and cross-border tax matters involving expatriates, globally mobile individuals, foreign residents, non-residents, Australian property investors and clients with international income, assets or residency issue
Technical Expertise
Her technical focus includes Australian tax residency, Double Tax Agreement provisions, foreign income
reporting, foreign tax offsets, ESS and equity arrangements, capital gains tax, deemed disposal issues,
Australian property, overdue lodgements, amendments, objections and private binding ruling applications.
Approach & Client Outcomes
Nika’s approach combines detailed technical analysis, careful review of supporting evidence and clear client communication. Her work is directed toward identifying supportable Australian tax positions in complex cross-border
circumstances, where residency history, overseas income, asset ownership and the interaction between Australian and foreign tax systems can significantly affect the final tax outcome.
Selected Awards and Professional Recognition
Nika Widanage — Winner
Corporate Accountant Awards
2025
Financial Controller of the Year
AIMS Australia Tax Accountants — Winner
Quality Business Awards 2025
Tax Service — City of Adelaide,
South Australia Award category and location are
stated as published by the
award body.
AIMS Australia Tax Accountants — Finalist
Australian Accounting Awards
Firm of the Year — 2022, 2024,
2025 and 2026
Nika Widanage — Finalist
Australian Accounting Awards
Partner of the Year — Boutique
Firm — 2024, 2025 and 2026
AIMS Australia Tax Accountants — Winner
Client Choice Awards 2021
Best Tax Firm under $30 million
Best Accounting & Consulting
Winner
Winner - Corporate Accountant Awards 2025
Financial Controller of the Year
Winner
Winner - Quality Business Awards 2025
AIMS Australia Tax Accountants
Finalist
Finalist - Australian Accounting Awards 2022, 2024, 2025 and 2026
Firm of the Year
Finalist
Finalist - Australian Accounting Awards 2024, 2025 and 2026
Partner of the Year - Boutique Firm
Winner
Winner - Client Choice Awards 2021
Best Tax Firm < $30m
Winner
Winner - Client Choice Awards 2021
Best Accounting & Consulting Services Firm < $30m
Additional Recognition by Year
2026
AIMS Australia Tax Accountants — Finalist, Australian Accounting Awards, Firm of the Year
- Nika Widanage — Finalist, Australian Accounting Awards, Partner of the Year — Boutique Firm
2025
- Nika Widanage — Winner, Corporate Accountant Awards, Financial Controller of the Year
- AIMS Australia Tax Accountants — Winner, Quality Business Awards, Tax Service
2024
AIMS Australia Tax Accountants — Finalist, Australian Accounting Awards 2024
- Firm of the Year
- Fast-Growing Firm
- Public Accountant of the Year
- Network of the Year
- Multi-Service Firm of the Year
- Diversity & Inclusion Program/Initiative of the Year
- Marketing Program of the Year
- Wellness Program/Initiative of the Year
2023
AIMS Australia Tax Accountants — Finalist, Australian Accounting Awards 2023
- Fast-Growing Firm
- Wellness Program/Initiative of the Year
- Innovator of the Year
- Diversity & Inclusion Program/Initiative of the Year
2022
AIMS Australia Tax Accountants — Finalist, Client Choice Awards 2022
- Best Accounting & Consulting Firm < $30m
AIMS Australia Tax Accountants — Finalist, Australian Accounting Awards 2022
- Firm of the Year
- Business Advisory Firm of the Year
2021
AIMS Australia Tax Accountants — Winner, Client Choice Awards 2021
- Best Tax Firm < $30m
- Best Accounting & Consulting Firm < $30m
