How do we handle "work in progress" (WIP) aging? What report helps us identify billable hours that haven't been invoiced yet?

To manage Work in Progress (WIP) aging, you typically use an Aged WIP Report (also called an Aged Unbilled Time Report, Unbilled Work Report, or WIP Aging Report, depending on your accounting/practice management system). This report identifies billable hours and expenses that have been recorded but have not yet been invoiced, and it groups them by how long they have remained unbilled.LNRC Support+1

How to handle WIP aging

A common process is:

1. Run the WIP Aging / Aged Unbilled Time report regularly

• Review unbilled time by client, project/matter, employee/timekeeper, and age bucket.

• Typical aging buckets are:

• Current

• 30+ days

• 60+ days

• 90+ days

• 120+ daysDeltek Help

2. Prioritize older WIP

• Investigate items that have been sitting unbilled for extended periods.

• Determine whether the work is:

• Ready to invoice

• Waiting on client information/approval

• Needs a billing adjustment

• No longer recoverable and should be written off (per your firm’s policies)Deltek Help

3. Review billing bottlenecks

• Look for patterns:

• Specific clients with consistently aging WIP

• Projects where hours are accumulating without invoices

• Timekeepers who have delayed submissions

4. Convert eligible WIP into invoices

• After review and approval, move billable WIP into draft or final invoices to reduce the unbilled balance.Financial Cents Help Center

Report that identifies uninvoiced billable hours

Look for one of these reports in your system:

• Aged WIP Report — best for seeing how long billable work has remained uninvoiced.LEAP Community
• Unbilled Time Report / Unbilled Work Report — best for listing all billable hours that have not yet been invoiced.Financial Cents Help Center+1
• WIP Aging by Client/Project/Timekeeper — useful for accountability and identifying where billing delays occur.Canopy Knowledge Base

If you tell me which system you use (e.g., QuickBooks, NetSuite, Deltek, Thomson Reuters Practice CS, Clio, MyCase, etc.), I can point you to the exact report name and menu path.

The report that helps you identify billable hours that have not been invoiced yet is the WIP (Work in Progress) Aging Report (also commonly referred to as the Unbilled Time Aging Report or Unbilled WIP Report).bennettfinancials.com

Managing and aging WIP correctly prevents revenue leakage, accelerates cash flow, and highlights operational bottlenecks.jobpow.com+1

Identifying Unbilled Hours

• WIP Aging Report : This report lists all unbilled time and expenses grouped by how long they have been sitting unbilled (e.g., 0–30 days, 31–60 days, 61–90 days, and 90+ days).bennettfinancials.com
• Key Indicators to Watch:
  • Stale hours in older aging buckets indicate delayed client reviews, disputed work, or project manager bottlenecks.
  • Unbilled amounts that exceed the approved budget signal uncollected scope creep.jumpstartpartners.finance

Best Practices for Handling WIP Aging

• Establish Weekly Project Reviews : Require project managers to review project-level WIP weekly to catch billing delays and address scope changes immediately while the work is fresh.tier2systems.com+1
• Conduct Monthly Financial Reconciliation : Finance and delivery leadership should review firm-level WIP aging monthly to determine if aged unbilled amounts need to be written off, billed immediately, or adjusted for revenue recognition.tier2systems.com
• Automate Billing Triggers : Set up alerts in your practice management, ERP, or accounting software when unbilled time crosses a specific age threshold (e.g., 45 days) to prompt immediate invoicing.
• Enforce Standardized Cut-offs : Ensure time and expense entries are locked down on a rigid schedule so that the WIP report accurately reflects the true value of delivered services before month-end close.

If you'd like, let me know:

• What software or ERP you are using (e.g., QuickBooks, Deltek, Practice Ignition)
• Whether your firm bills on a hourly, fixed-fee, or retainer basis

I can give you specific steps to configure or pull this report in your system.

The report you’re looking for is typically the WIP Aging Report (also called Aged WIP or Unbilled WIP).

It answers: “What billable work have we performed that has not yet been invoiced, and how old is it?”Deltek+1

How to handle WIP aging

• Run the WIP Aging Report regularly—weekly is useful for billing operations; monthly at minimum for management review.

• Group/filter by client, matter/project, and responsible timekeeper or billing manager.

• Use aging buckets such as Current, 31–60, 61–90, and 90+ days to identify billing delays.Canopy Knowledge Base+1

• Drill into older WIP to determine whether it should be:

• invoiced,

• corrected/approved,

• held for a legitimate reason,

• adjusted, or

• written off.

• Pay particular attention to 90+ day WIP because it represents work that has been sitting unbilled for a significant period and warrants a specific explanation/action.

For example, the report might show:

Client B would be the one to investigate first, because $3,000 has remained unbilled for 90+ days.

If you're using a specific system (e.g., QuickBooks, Clio, Deltek Ajera, PracticePanther, or another PSA/accounting platform), tell me which one and I can give you the exact report name, filters, and workflow to manage WIP aging.

The report you’re looking for is generally a WIP Aging (Work-in-Progress Aging) report. It identifies billable work—especially unbilled time/hours—and shows how long it has been sitting uninvoiced.Deltek Help+1

How to handle WIP aging

• Run WIP Aging regularly, ideally weekly or at least at month-end.
• Age from the work-entry date, not the invoice date. This shows how long you’ve actually been carrying unbilled work.
• Use buckets such as Current, 1–30, 31–60, 61–90, and 90+ days.Canopy Knowledge Base+1
• Focus management attention on the older buckets. Aging WIP can indicate billing delays and increases the risk that work ultimately gets written off.LEAP Community
• Drill down by client/project, service item, and employee/timekeeper to determine why the hours haven't been billed.
• Establish an action for each older balance: bill it, hold it with a documented reason, or write it off.

The key report

Look for a report named WIP Aging, Aged WIP, WIP/AR Aging, or sometimes Unbilled Time/WIP Aging. The exact name varies by accounting/practice-management system. These reports typically show both unbilled hours/revenue and their aging, which is exactly what you need to identify billable hours that haven't made it onto an invoice yet.esilaw.com+1

If you're referring to a specific system (e.g., QuickBooks, CCH, Practice CS, Clio, Deltek, etc.), tell me which one and I can point you to the exact report and filters to use.