Tax deductibility of legal fees review checklist
Legal fees sit on the capital/revenue line more than most expenses. This checklist is for Australian tax advisers and solicitors advising clients on deductibility of fees incurred in disputes, acquisitions, restructures, and defence of title.
This is a 12-step checklist for assessing whether a client’s legal fees are deductible under section 8-1 of the Income Tax Assessment Act 1997, whether they are capital in nature, and whether the 5-year blackhole deduction under section 40-880 applies.
The checklist
Identify the purpose of the legal fee
Document what the legal work is for — contract review, acquisition, dispute, defence of title, restructure, or employment termination.
Apply the section 8-1 general deduction test
Check the nexus: are the fees incurred in gaining or producing assessable income, or in carrying on a business to produce assessable income?
Apply the capital exclusion
Fees of a capital, private, or domestic nature are excluded. Consider Sun Newspapers principles (enduring benefit, one-off, structural).
Check the revenue v capital characterisation
Fees defending a revenue-producing position are revenue; fees acquiring or defending the profit-yielding structure are capital.
Consider the CGT cost base
For capital fees tied to an asset, add to the CGT cost base under section 110-25 — incidental costs of acquisition or disposal.
Check for blackhole expenditure relief
If the fee is capital but not in any cost base, consider the 5-year straight-line deduction under section 40-880.
Apply specific deductions where relevant
Check for specific provisions — s 25-5 (managing tax affairs), s 25-10 (repairs), s 25-25 (borrowing costs).
Review employment-related fees
Fees by employees for unfair dismissal or contract disputes are generally deductible; fees to obtain new employment are not.
Review fees in family law property settlements
Section 118-180 provides CGT rollover but fees are generally private — not deductible and not in the cost base.
Check GST input tax credits
If the client is registered for GST, confirm input tax credits are claimable on the legal fee for a creditable purpose.
Document the reasoning and evidence
Keep the tax invoice, scope of work, and the memo supporting the characterisation for 5 years.
Consider a private binding ruling
Where characterisation is finely balanced, consider requesting a PBR from the ATO to obtain certainty.
When this checklist applies
Use when issuing a tax invoice for material legal work or when reviewing a client’s treatment of legal fees at year end.
Common pitfalls
- Claiming a capital fee as a revenue deduction (e.g. M&A advice)
- Missing the CGT cost base uplift when a fee is capital but asset-linked
- Overlooking section 40-880 for blackhole capital fees
- Claiming private family law fees as a deduction
- Not checking GST input tax credits for registered clients
Run this checklist on a real matter
Quillio reviews legal invoices, classifies fees as revenue, capital, or blackhole, and drafts the supporting memo on a live matter. See /practice-areas/commercial-lawyers or start a free trial.
General guidance only — this is not tax advice. Confirm characterisation with a registered tax agent or tax lawyer for the specific facts.
Use this checklist on your matter.
Quillio can run this checklist on a specific NSW conveyancing matter — confirm each item, calculate adjustments, and generate the supporting documents. The free trial requires no credit card.
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