Work in progress is one of the most important operational measures in an accounting firm. It represents work recorded against clients and jobs that has not yet been fully billed or otherwise cleared, according to the firm’s practice-management rules.
It may also contribute to an unbilled-revenue asset in the firm’s financial statements, but the two figures should not automatically be treated as identical. Financial-statement recognition depends on the firm’s accounting policies, adjustments and reporting framework.
Whatever the accounting treatment, ageing WIP deserves regular attention. A single total does not show whether the balance relates to healthy work underway, jobs awaiting information, delayed review, disputed scope or work that may be difficult to recover.
The opportunity is to identify those differences while partners and managers can still influence the outcome.
Why WIP can become difficult to manage
WIP often accumulates gradually rather than through one obvious event.
A job may remain open because client information is missing. Completed work may wait for manager or partner review. A fixed-fee engagement may require more effort than expected. An interim bill may not yet have been allocated against the relevant WIP. Individually, each delay may seem manageable. Across many clients and jobs, the balance becomes harder to interpret.
The reporting process can add another barrier. If WIP analysis requires a fresh export, spreadsheet manipulation and manual allocation by partner or client, proactive review competes with urgent client work. The firm may continue seeing the total while losing sight of the jobs contributing to it.
Ageing WIP is not necessarily invisible, and many practice-management systems provide WIP reports. The practical question is whether the report gives the relevant people a timely, prioritised and drillable view they can use without rebuilding the analysis.
Ageing is an indicator, not a verdict
Breaking WIP into ageing periods helps partners distinguish recent work from balances that have remained unbilled for longer.
Common periods may include current WIP and 30-, 60-, 90- or 180-plus-day balances, although the appropriate buckets depend on the firm’s billing cycle, service mix and job duration.
Older WIP deserves attention because the original work becomes more difficult to recall, explain and bill as time passes. However, age alone does not prove that the balance will be written off. A long-running advisory engagement, delayed external event or agreed billing arrangement may legitimately hold WIP for an extended period.
An effective accounting-firm WIP report combines ageing with context:
client and client group;
job or engagement;
responsible partner and manager;
staff members contributing time;
time, disbursements and other WIP movements;
invoices, write-offs and write-ups; and
any interim fees relevant to the balance.
This allows the firm to investigate why WIP is ageing instead of treating every older balance in the same way.
A large WIP balance is not automatically healthy
A rising WIP total may reflect increasing work and future billing opportunity. It can also indicate delayed billing, stalled jobs, scope problems or slow review.
The total therefore needs to be read alongside questions such as:
How much of the balance is recent versus aged?
Which clients and jobs are driving the increase?
Has productive work translated into billable value?
Are completed jobs waiting for approval or invoicing?
Is WIP being cleared through fees, write-offs or other adjustments?
Is recoverability changing as the WIP is billed?
This is why WIP management is more than reducing the balance. The goal is to understand the work, move appropriate jobs towards billing and address issues before the position becomes more difficult to resolve.
Write-offs have more than one cause
It is tempting to treat old WIP as the cause of a later write-off. In practice, ageing is often a symptom or warning signal rather than the original cause.
Write-offs may result from:
work extending beyond the agreed scope;
inaccurate budgets or pricing;
inefficient processes or avoidable rework;
work being completed at the wrong level of seniority;
incomplete or poor-quality client information;
weak time-entry coding or narration;
delayed review and billing decisions;
a commercial fee reduction; or
a dispute about the work performed.
Regular review cannot prevent every write-off. It can reveal the developing issue earlier, while the firm may still be able to clarify scope, change the workflow, request missing information, discuss the fee or make a deliberate billing decision.
Interim billing needs separate attention
Interim or progress billing can help a firm invoice work during a longer engagement rather than waiting until final completion.
An interim invoice is not the same as a payment received. Once raised, the invoice becomes part of the debtor and collection process. Debtor reporting then shows whether the resulting balance is current, due or overdue.
The WIP issue is whether interim fees have been correctly allocated or matched against the relevant work under the practice-management system’s rules. Unallocated interim fees can make it harder to understand the net position of a client or job and may complicate later billing and recovery analysis.
Useful reporting should therefore distinguish:
gross WIP generated;
invoices or interim fees raised;
allocated and unallocated amounts;
write-offs or write-ups; and
the remaining WIP position.
The exact treatment varies between systems and firms, so definitions should be agreed before the figures are compared.
Build a regular WIP action rhythm
The appropriate review frequency depends on the firm’s billing cycle, transaction volume and level of risk. Weekly review may suit fast-moving or higher-risk portfolios, while a structured monthly review may be sufficient elsewhere.
A useful meeting should move beyond reading the total and assign actions:
Review changes in total and aged WIP.
Prioritise high-value, older or unusual balances.
Drill into the clients, jobs and transactions involved.
Identify the reason the WIP remains open.
Agree the next action, owner and timeframe.
Review whether the action was completed at the next meeting.
Possible actions may include obtaining client information, completing technical work, progressing partner review, raising an interim or final invoice, correcting a source-system entry, revising scope or approving a deliberate write-down.
The value comes from connecting the report with ownership and follow-through.
Make the detail accessible without rebuilding the report
Practice Clarity connects WIP with timesheets, productivity, billings, recoverability and debtors through one reporting model designed for accounting firms.
Partners and managers can move from the firm-wide position into the relevant client, job, partner, staff member or transaction detail. The reporting layer uses read-only access to supported practice-management data, so corrections continue to be made in the operational source system.
The dashboard does not decide whether an older balance is recoverable or automatically prevent a write-off. It helps the responsible person identify where WIP is sitting, how it has moved and which items need investigation.
Frequently asked questions
Is WIP always an asset on an accounting firm’s balance sheet?
Not necessarily in the same amount shown by the practice-management system. Financial-statement recognition depends on the firm’s accounting policies and reporting framework. Practice-management WIP remains an important operational measure even when the accounting presentation differs.
Why does WIP become under-managed?
WIP can accumulate across many clients and jobs, while useful review may require ageing, ownership and transaction detail. If that information is difficult to assemble, proactive review can be displaced by more urgent work.
Does old WIP always become a write-off?
No. Older WIP is a prompt for investigation, not proof of non-recovery. Its outcome depends on the job, client, scope, billing arrangement and reason for the delay.
How can accounting firms reduce WIP write-offs?
Regularly review WIP by age, value, client, job and owner; investigate unusual balances; and assign clear actions. Earlier visibility can help the firm address scope, pricing, workflow, client-information and billing issues before they become harder to resolve.
How often should WIP be reviewed?
The right frequency depends on the firm’s billing cycle and risk profile. Weekly or monthly reviews are common practical options, provided high-value or higher-risk exceptions can be identified sooner when necessary.
If your WIP report provides a total but not a clear action list, book a Practice Clarity walkthrough to explore current, aged and movement-based WIP reporting for your firm.