Year-End Starts in November: A Construction Close Readiness Guide
December doesn't create year-end problems. It reveals them. The holdback, WIP, vendor, and cutoff work that makes January a review instead of an investigation starts now.

Every January, the same discovery gets made in construction back offices across Ontario: year-end isn't a December event. It's a December deadline for work that either happened all year or didn't. The companies that close the year calmly aren't faster accountants. They're the ones who used November, while there's still a month of room to fix what the close will otherwise expose.
Here's where that month is best spent.
Reconcile holdback while people still remember the jobs
Holdback receivable and payable should tie to the GL per job, not just in total. November is the time to list every expected release date, confirm which releases are already invoiceable, and actually invoice them. We've seen contractors carry six figures of releasable holdback into year-end simply because nobody was watching the trigger. If the reconciliation turns into archaeology, that's a finding about your systems, and worth writing down.
Clean the vendor and subcontractor records
T5018 season rewards companies whose subcontractor records were right all year and punishes everyone else. Confirm business numbers and addresses now, merge the duplicate vendors that crept in, and check that WSIB clearances and insurance certificates are current. None of this is hard in November. All of it is miserable in the last week of February.
True up the WIP before the auditors ask
Sit down with each project manager and refresh cost-to-complete honestly, job by job. Margin fade recognized in November is a management conversation; the same fade discovered by your accountant in February is a restatement. While you're there, close the jobs that are actually finished. Every 'open' job that ended in July is a small lie your year-end has to absorb.
Count what you carry
Materials in the yard, stock on the service trucks, small tools and equipment: schedule the counts now, while the weather and the calendar still cooperate. Identify the write-offs and get them approved before the close, so count day confirms numbers instead of generating surprises.
Hold the December cutoffs
- Field tickets and timesheets entered before the holiday break, not remembered in January
- December deliveries received against POs in the right period
- Change orders approved and billed, not sitting as verbal agreements on someone's phone
- Final progress draws submitted on time, so the year's last billing lands in the year
Keep the list of what broke
Every late night in this process points at a specific gap: a number that lived in two places, a report that took a day instead of a minute, a reconciliation that only one person knows how to do. Write each one down as it happens. By January, that list is a project plan, pre-justified by your own close.
And if the list is long: the fix isn't a faster team. It's a system where the filing happens while the year happens, so the close reveals clean numbers instead of creating them. That's what job costing, holdback, and WIP look like in Acumatica Construction Edition, and it's why the contractors who run it tend to find January boring. Boring is the goal.
Curious how this applies to your business?
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