Legal Billing Write-Offs and Write-Downs: A Guide for Australian Law Firms

Every law firm writes off time. The question is whether it happens deliberately, as a conscious business decision, or silently, because no one is tracking where the revenue leakage is actually occurring. In many Australian firms, write-offs represent between fifteen and thirty percent of recorded time — a staggering amount of work that generates no revenue.

Understanding the difference between write-offs and write-downs, knowing when each is appropriate, and building systems to reduce unnecessary revenue loss are essential skills for practice managers and partners. This guide breaks down how write-offs work in Australian legal billing and what firms can do to improve their realisation rates.

Write-Offs vs Write-Downs: The Distinction Matters

A write-off is the complete removal of recorded time from a bill. The work was done, the time was recorded, but the firm decides not to charge the client for it. The entry is removed from the invoice entirely, reducing the total bill by the full value of that time.

A write-down is a reduction in the value of recorded time. The work was done, the time was recorded, and the entry appears on the invoice — but at a reduced rate or reduced time allocation. A partner might reduce a four-hour research task to two hours on the bill, or apply a discounted hourly rate to a specific entry.

Both reduce revenue, but they send different signals. Write-offs say "this work should not have been billed at all." Write-downs say "this work was valuable but the charge needs to be adjusted." For financial reporting and practice management, tracking these separately provides much more useful data than lumping them together as "discounts."

Why Write-Offs Happen in Australian Firms

Write-offs fall into several categories, and each requires a different response.

Inefficiency write-offs occur when a task takes longer than it should have. A junior lawyer spends six hours researching a point of law that a senior solicitor could have resolved in ninety minutes. The partner reviews the time entries at billing time and writes off four and a half hours. This is the most common type of write-off, and while some degree of it is inevitable (juniors need to learn), persistent inefficiency write-offs suggest a supervision or delegation problem.

Scope creep write-offs happen when a matter expands beyond the original costs estimate without the client being informed or a revised costs disclosure being issued. The firm does work that falls outside the agreed scope, and when the bill is prepared, the partner decides the client cannot reasonably be charged for work they did not authorise. Under sections 174 and 175 of the Legal Profession Uniform Law, lawyers must provide updated costs disclosures when the estimated costs are likely to exceed the original estimate by a material amount. Firms that do this diligently have fewer scope creep write-offs.

Relationship write-offs are deliberate discounts applied to maintain or develop a client relationship. A firm might reduce a bill for a long-standing client who has sent consistent work over many years, or discount initial work for a new client with significant future potential. These are business decisions, not billing failures — but they should be tracked and evaluated to ensure the relationship is actually delivering the expected return.

Administrative write-offs result from time recording failures. Entries are too vague to bill ("research — 3 hours"), duplicated across multiple timekeepers, or recorded against the wrong matter. By the time the bill is prepared, the entries cannot be salvaged. These write-offs are entirely preventable with better time recording practices.

Measuring Your Firm's Realisation Rate

Realisation rate — the percentage of recorded time that ultimately appears on invoices — is the key metric for understanding write-off impact. A firm that records one million dollars in time but bills eight hundred thousand dollars has a realisation rate of eighty percent and a write-off rate of twenty percent.

Australian firms typically see realisation rates between seventy and ninety percent, with significant variation by practice area. Litigation tends to have lower realisation because of the inherent uncertainty in outcomes and the frequent need to discount when results fall short of expectations. Conveyancing and commercial work tends to have higher realisation because the scope is more predictable.

Tracking realisation by fee earner, practice area, and client reveals where the problems are. If one partner consistently writes off thirty percent of a particular associate's time, the issue might be delegation, training, or unrealistic billing targets. If a specific client's matters consistently generate high write-offs, the costs agreement may need renegotiation.

Strategies to Reduce Unnecessary Write-Offs

The single most effective strategy is contemporaneous time recording with detailed descriptions. When entries are recorded immediately with clear descriptions of what was done and why, partners have the information they need to make good billing decisions. Vague entries recorded days or weeks after the work was performed almost always get written off because no one — including the lawyer who did the work — can justify them.

Regular work-in-progress reviews, conducted monthly rather than at billing time, allow partners to identify and address problems before they become write-offs. If a junior has spent twenty hours on research that should have taken five, catching this at the two-week mark allows for a course correction. Catching it three months later means writing off fifteen hours.

Clear delegation with time budgets helps control inefficiency write-offs. Rather than telling a junior to "research whether the contract is enforceable," a supervising partner should specify: "Spend no more than three hours reviewing the penalty clause under section 135 of the National Consumer Credit Protection Act. If you need more time, come to me first." This sets expectations and creates accountability.

Proactive costs disclosure management reduces scope creep write-offs. When a matter begins to exceed the original estimate, issuing an updated costs disclosure under section 174(3) protects the firm's ability to bill for the additional work. The conversation with the client may not be comfortable, but it is far better than performing the work and then being unable to charge for it.

When Write-Offs Are the Right Decision

Not all write-offs are bad. Writing off genuinely inefficient work is appropriate — the client should not bear the cost of a learning experience. Writing down a bill to maintain a strategically important client relationship is a sound business decision when done consciously. Absorbing some cost on a loss-leader matter that opens the door to profitable ongoing work is sensible marketing.

The problem is not that write-offs exist. The problem is when they happen by default rather than by decision — when time simply disappears because no one recorded it properly, reviewed it in time, or had the systems to manage it.

How Better Time Recording Reduces Write-Offs

The pattern is consistent: firms that invest in better time recording infrastructure see their realisation rates improve. The improvement comes not from billing more aggressively, but from capturing time that would otherwise be lost and recording it with sufficient detail that it can withstand scrutiny at billing time.

AI-powered billing tools contribute to this by converting raw activity — meeting recordings, email correspondence, file notes — into structured time entries with professional descriptions. The entries capture work that lawyers often fail to record manually, and the descriptions are specific enough to survive the partner review process without being written off for vagueness.

Frequently Asked Questions

What is a good realisation rate for an Australian law firm?

Most well-managed Australian firms target a realisation rate of 85 to 92 percent. Rates below 80 percent typically indicate systemic problems with time recording, delegation, or scope management. Rates above 95 percent may suggest the firm is under-recording time or billing too conservatively, leaving potential revenue on the table.

Should write-offs be approved by a single partner or a committee?

For individual matter write-offs below a set threshold (many firms use five thousand dollars), the supervising partner should have authority to approve write-offs. Above that threshold, a second partner or a billing committee review ensures that large write-offs are scrutinised and that patterns across the firm are identified. The key is having a documented process — informal write-offs that bypass any review create accountability gaps.

Are write-offs tax deductible for Australian law firms?

Write-offs of unbilled time are not separately tax deductible because the income was never recognised. The time was recorded as work in progress, but since it was written off before being invoiced, it never became assessable income. The firm simply does not declare that revenue. For accounting purposes, write-offs reduce the value of work in progress on the balance sheet. Your firm's accountant should ensure that write-off tracking aligns with the relevant Australian Accounting Standards for service revenue recognition.