How can I integrate project-based bookkeeping into a construction company's monthly close workflow?

To integrate project-based bookkeeping into a construction company’s monthly close workflow, the key is to build the close around job costing, not just the general ledger. That means every month-end process should help you answer:

• What did we earn on each project?
• What costs belong to each job?
• Are we over/under billed?
• What revenue should be recognized?
• Are costs and labor allocated correctly?

Here’s a practical way to do it.

1) Set up the accounting structure around projects

Before monthly close can work cleanly, the company needs a structure that supports project-level tracking.

Use these core dimensions:

• Project / Job code for every contract
• Cost type: labor, materials, subcontractors, equipment, burden, overhead, permit, etc.
• Phase / WBS if projects are large enough to need more detail
• Cost code system for standardizing job cost entry

Make sure each transaction can be tied to a job:

• Vendor bills
• Employee time sheets
• Purchase orders
• Equipment usage
• Change orders
• Progress billings
• Retainage

If something can’t be tied to a job, it should be clearly classified as overhead.

2) Build job costing into day-to-day capture

Monthly close will only work if the data is captured correctly during the month.

Required daily/weekly inputs:

• Timecards coded by project and cost code
• AP invoices matched to project and cost code
• POs linked to jobs
• Material receipts logged to job
• Subcontractor invoices reviewed against committed costs
• Change orders updated immediately

Good practice:

• Require project codes on all operational documents
• Use approval workflows for invoices and timesheets
• Lock down coding rules so overhead doesn’t get mixed into job costs

3) Define the monthly close schedule around project accounting tasks

A standard close checklist should include project-specific steps. Here’s a workable structure:

Days 1–3: Cutoff and data collection

• Freeze prior-period time entries
• Collect all vendor bills and receipts
• Confirm unbilled subcontractor work
• Capture material deliveries received but not yet invoiced
• Gather field reports and progress updates
• Review pending change orders

Days 4–6: Cost allocation and accruals

• Accrue labor not yet posted
• Accrue subcontractor costs incurred but not billed
• Accrue materials received but not invoiced
• Allocate equipment costs to jobs
• Allocate indirect labor and overhead if needed
• Record payroll burden and benefits

Days 6–8: Job cost review

• Compare actual costs to budget by project and cost code
• Investigate miscodings
• Review incomplete transactions
• Reclassify costs that were posted to the wrong job
• Confirm change orders are reflected in the budget if approved

Days 8–10: Revenue and billing review

• Review percent complete for each project
• Calculate earned revenue if using percentage-of-completion
• Compare earned revenue to billings
• Record revenue adjustments if required
• Check retainage receivable/payable balances

Days 10–12: Financial close and reporting

• Post adjusting entries
• Reconcile AP, AR, WIP, retainage, payroll, and intercompany balances
• Close the books
• Produce job profitability reports
• Distribute management reports to project managers and leadership

4) Integrate WIP accounting into the close

For construction companies, work in progress (WIP) is central.

Monthly WIP review should include:

• Contract value
• Approved change orders
• Revised contract value
• Costs to date
• Estimated cost to complete
• Percent complete
• Earned revenue
• Billings to date
• Under/over billing

The close should produce:

• WIP schedule
• Job margin report
• Unbilled revenue / CIP
• Overbilling liability
• Underbilling asset

This ensures the financial statements match project performance.

5) Reconcile operational data to the GL every month

Project-based bookkeeping often fails when the subledger and GL drift apart.

Monthly reconciliations should include:

• Job cost subledger to GL
• Payroll reports to labor costs
• AP job costs to vendor bills
• Equipment allocation to internal usage reports
• AR billing to contract billings
• Retainage subledger to AR/AP
• WIP schedule to revenue accounts

This is where many errors are found:

• Costs posted to the wrong project
• Unposted payroll
• Missing subcontractor accruals
• Unrecorded change orders
• Revenue recognized too early or too late

6) Standardize the close checklist by role

Project-based bookkeeping works best when responsibilities are clear.

Example role split:

Project managers

• Confirm job status
• Review cost-to-complete
• Approve change orders
• Verify percent complete
• Flag unbilled work or disputed costs

AP / bookkeeping

• Code bills to job and cost code
• Match receipts and POs
• Record accruals
• Handle retainage
• Reconcile vendor balances

Payroll / HR

• Ensure labor coding is correct
• Post burden and fringes
• Review union/job-specific wage rules

Controller / CFO

• Review WIP
• Approve revenue recognition entries
• Analyze job margins
• Review close exceptions
• Sign off on financial statements

7) Use project dashboards to drive the close

Instead of waiting until after the close, use dashboards during the month.

Helpful dashboards:

• Budget vs actual by project
• Costs incurred vs estimate to complete
• Billing status by job
• Open change orders
• Unapproved invoices
• Labor coding exceptions
• Jobs with negative margin or large variances

These reports help identify issues before close, which shortens the process.

8) Automate where possible

Construction bookkeeping gets much easier with the right system.

Automations to consider:

• OCR and approval workflow for AP invoices
• Time entry with project codes
• Integration between field apps and accounting software
• Automated WIP reports
• Job costing dashboards
• Recurring monthly accrual templates
• Billing rules for progress billing and retainage

Common software features needed:

• Project/job dimension tracking
• WIP reporting
• Change order tracking
• Retainage management
• Labor burden allocation
• Integration with payroll and estimating systems

9) Create a month-end close checklist specific to construction

Here’s a simple checklist structure you can adapt:

Construction Month-End Close Checklist

Cutoff

• All timecards submitted and approved
• All vendor bills received
• Open POs and commitments reviewed
• Material receipts entered
• Change orders updated

Accruals

• Payroll accrual posted
• Unbilled subcontractor work accrued
• Uninvoiced materials accrued
• Equipment allocations posted
• Overhead allocations posted

Project review

• Job cost vs budget reviewed
• Variances explained
• Incorrect coding corrected
• Cost-to-complete reviewed with PMs

Revenue/WIP

• Percent complete reviewed
• WIP schedule prepared
• Under/overbillings calculated
• Revenue recognition entries posted

Reconciliation

• Job cost subledger ties to GL
• AR/AP/retainage reconciled
• Payroll ties out
• Balance sheet accounts reconciled

Reporting

• Job profitability report issued
• WIP report issued
• Executive summary prepared
• Exceptions and risks documented

10) Start small and improve the process

If the company is not already doing this, don’t try to overhaul everything at once.

Best rollout approach:

1. Standardize project coding
2. Improve AP and payroll job coding
3. Add monthly accruals
4. Introduce WIP reporting
5. Add cost-to-complete reviews
6. Tighten reconciliations and dashboards

Bottom line

To integrate project-based bookkeeping into monthly close, treat the close as a project performance review, not just a financial statement update. The workflow should capture:

• All direct costs by job
• Indirect costs allocated consistently
• Accurate WIP and revenue recognition
• Reconciliations between project systems and the GL
• Project manager input on status and estimates

If you want, I can also provide:

1. a construction month-end close checklist template,
2. a sample WIP schedule, or
3. a RACI matrix for project-based close responsibilities.