Law firms are among the most heavily regulated businesses in Australia from a financial management perspective. State law society rules impose strict obligations on the handling of client trust money, work-in-progress valuation requires careful policy decisions under the relevant accounting standards, and the GST and employment tax treatment of legal practitioners varies significantly depending on whether the practitioner is an employed solicitor, a principal, or a self-employed barrister. This guide covers the core bookkeeping disciplines.
Trust Accounting: The Non-Negotiable Foundation
Every Australian law firm that receives money on behalf of clients — including advance fee retainers, settlement proceeds, and amounts held pending disbursement — is legally required to maintain a trust account separate from its operating account. This is mandated by state legislation:
- New South Wales: Legal Profession Uniform Law Application Act 2014 and Legal Profession Uniform Rules
- Victoria: Legal Profession Uniform Law Application Act 2014
- Queensland: Legal Profession Act 2007
- Western Australia: Legal Profession Act 2008
- South Australia: Legal Practitioners Act 1981
Each state's Law Society or Legal Services Commissioner may audit trust accounts. Deficiencies — whether through fraud, error, or poor record-keeping — are serious professional conduct matters.
Key trust accounting principles:
- Trust funds belong to the client until properly applied or transferred to the firm's operating account following an invoice
- Trust account receipts and withdrawals must be recorded in a trust receipts journal and trust payments journal
- Each client's trust balance must be separately maintained in a client ledger — commingling is prohibited
- Monthly trust account reconciliations are compulsory: the sum of all client ledger balances must equal the trust bank account balance
- A trust account shortage (even a temporary one caused by a bank error) must be reported to the relevant law society
For bookkeepers, the trust reconciliation is a monthly deliverable that cannot be deferred. It is not the same as the firm's general bank reconciliation — it is a separate control exercise over a separate legal pool of funds.
Disbursements vs. Professional Fees
A practical distinction that affects both invoicing and bookkeeping is between disbursements (out-of-pocket expenses incurred by the firm on behalf of the client) and professional fees (the firm's own service charges).
True disbursements — court filing fees, barrister fees, search fees, process server costs — are often reimbursed at cost with no GST uplift (they are inputs purchased on behalf of the client). Under the GST Act, a reimbursement of a GST-inclusive disbursement may be treated as a taxable supply by the firm (the firm collects GST) or as a cost pass-through with input tax credit offset depending on the circumstances. The ATO's GST Ruling GSTR 2000/37 provides guidance on distinguishing between agent and principal arrangements.
Professional fees are always GST-inclusive at 10% (legal services are fully taxable — they are not GST-free health or education services).
Work-in-Progress: Valuation and Revenue Recognition
Unbilled WIP (time recorded by fee earners but not yet invoiced) is one of the most significant balance sheet items for law firms. The accounting question is whether WIP should be recognised as an asset (and when it becomes revenue).
Under AASB 15 Revenue from Contracts with Customers, a firm must identify performance obligations in each client engagement and recognise revenue as (or when) those obligations are satisfied. For time-and-materials matters, revenue is typically recognised as time is incurred (output method). For fixed-fee matters, revenue is recognised based on progress toward completion.
For tax purposes under ITAA 1997, professional service firms may elect to use:
- A work-in-progress basis (recognise WIP as assessable income as billed), or
- A cash basis (for certain smaller practices)
The election affects timing of income recognition and should be made consistently. Note that the ATO has historically scrutinised law firms that retain large WIP balances without billing — this can indicate income deferral.
GST Registration: Solicitors vs. Barristers
Solicitors employed in a law firm are employees. The firm charges GST on its services; the employed solicitor's wages are subject to PAYG withholding and SGC. The firm is the GST registrant.
Barristers in New South Wales and Victoria are typically sole practitioners (or operate via a company or trust) and are required to be registered for GST if their annual turnover exceeds $75,000. A barrister practising through a personal entity invoices solicitor clients GST-inclusive. The barrister is personally responsible for their BAS, activity statement lodgements, and income tax returns.
The brief fee arrangement: When a solicitor briefs a barrister, the solicitor's firm pays the barrister's brief fee (plus GST) and on-charges this to the client as a disbursement or professional fee. The GST treatment at each step must be traced — if the solicitor claims the ITC on the barrister's brief, they should include GST when on-charging the client.
PAYG Obligations for Legal Staff
Employed solicitors, paralegals, and support staff are subject to standard PAYG withholding under the PAYG system. Law firms with multiple offices or practice groups should ensure payroll is processed under the correct ABN and TFN combination.
A practice with a trust structure (where the firm's principals operate through a trust) must distinguish between:
- Salaries and wages paid to employees (withhold PAYG, pay SGC)
- Distributions to principals from the trust (no PAYG withholding required unless the PSI rules apply — which is unlikely for a law firm with multiple clients)
Legislation and Further Reading
- Legal Profession Uniform Law (NSW/VIC) and equivalent state acts — trust accounting obligations
- A New Tax System (Goods and Services Tax) Act 1999 — GST on legal services, disbursements
- ATO GST Ruling GSTR 2000/37 — agents and principals (disbursement treatment)
- AASB 15 Revenue from Contracts with Customers — revenue recognition for service businesses
- Income Tax Assessment Act 1997, Division 7-B — professional firm profit allocation (Practical Compliance Guideline PCG 2021/4)
- ATO: PCG 2021/4 — professional firm profit distributions (www.ato.gov.au/law/view/document?docid=COG/PCG20214/NAT/ATO/00001)