Month-End Close for GCs Without a Full Accounting Team

Why Month-End Close Matters More Than Most GCs Think

A lot of small and mid-size general contractors treat month-end close as something big companies do. They have one bookkeeper, maybe a part-time controller, and they figure the numbers sort themselves out whenever taxes are due. That approach works until it doesn't. A job goes sideways, a pay application gets disputed, or a lender asks for a current work-in-progress schedule, and suddenly there's no reliable monthly snapshot to point to.

Month-end close is not an accounting formality. It is the process that tells you whether your jobs are performing, whether your billings match your costs, and whether the number in your bank account actually reflects the health of your business. For GCs running three to fifteen jobs simultaneously, getting this right every month is the difference between catching a problem in October and finding out about it in February.

What a Trial Balance Actually Is

The trial balance is a list of every account in your chart of accounts with its ending debit or credit balance. That's it. The name sounds intimidating, but the concept is simple: if your books are in balance, total debits equal total credits. If they don't, something was posted incorrectly.

For a GC, the trial balance is the starting point for every month-end task. You run it before you make any accruals or adjustments. It tells you whether your general ledger is clean enough to work with. If your accounting software shows a difference between debits and credits, stop and fix it before proceeding. Closing a month on an out-of-balance ledger just compounds the problem.

Most small GC offices run their trial balance on the last business day of the month, or within the first two business days of the new month. Either works as long as you're consistent.

The Month-End Close Sequence for a Small GC Office

Without a full accounting team, you need a repeatable sequence you can run in a predictable order. Here is a practical one that works for shops with one to three people handling the books.

Step 1: Cut Off Transactions

Before you run anything, make sure all transactions for the closing month are entered. That means all vendor invoices received through month-end, all subcontractor pay applications approved through month-end, all payroll through the last pay period that falls within the month, and all owner payments received. Transactions that arrive late get held for the next month. Do not backdate them to make the prior month look cleaner.

Step 2: Reconcile Your Bank and Credit Card Accounts

Reconcile every account to its statement. This is non-negotiable. Unreconciled bank accounts hide duplicate payments, uncleared checks, and posting errors. On a $4,000,000 annual volume, a $40,000 posting error is easy to miss if you're not reconciling monthly. Match every line.

Step 3: Post Job Cost Entries

Every cost needs to be coded to a job and a cost code before you close. For CSI MasterFormat users, that means costs are tagged to their correct division, whether Division 03 for concrete, Division 09 for finishes, or Division 26 for electrical. Unallocated costs sitting in a general overhead bucket will corrupt your job cost reports and make your WIP schedule unreliable.

Check your accounts payable aging. Any invoice coded to a job should carry a job number and cost code. Any that don't, fix them now.

Step 4: Run and Review the Trial Balance

Pull the trial balance. Scan the balances for anything that looks wrong. A negative balance in an expense account, a positive balance in a revenue account when a job hasn't billed yet, a liability account with a debit balance. These are flags. Investigate each one before moving forward.

Common issues at this stage include: credits posted to the wrong account, subcontractor retainage held that hasn't been recorded as a separate liability, and payroll tax liabilities that weren't accrued correctly.

Step 5: Accrue What You've Earned and What You Owe

This is the step small GC offices most often skip, and it creates the biggest distortions. Two accruals matter most.

• Revenue accrual: If you've performed work but haven't yet submitted your pay application for the month, record the earned revenue. Your books should reflect what you've earned based on percentage of completion, not just what you've billed.
• Subcontractor cost accrual: If a sub has performed work and you owe them money but their invoice hasn't arrived yet, accrue the cost. A sub who finished framing in October but sends their pay application in November generated an October cost, not a November cost.

These accruals keep your job cost reports honest and make your WIP schedule meaningful.

Step 6: Update Your WIP Schedule

The work-in-progress schedule is a GC-specific report that your trial balance feeds into. It shows, for every active job, how much you've billed relative to how much you've earned. The result is either overbilled (a liability on your balance sheet) or underbilled (an asset). If your WIP schedule shows a large underbilling on a job that's 80% complete and hasn't billed in 45 days, that's a cash flow problem waiting to happen. Catch it in the WIP review, not when payroll comes due.

Step 7: Lock the Period

Once everything reconciles and the WIP schedule is updated, lock the period in your accounting software. A locked period prevents anyone from accidentally posting to a closed month. This matters more as your team grows, but it's a good habit even with two people in the office.

Doing This With Minimal Staff

If one person handles all of this, budget four to six hours for a clean close on a business with five to ten active jobs. The first few months take longer while you build the habit. After three or four cycles, the sequence becomes mechanical.

A simple checklist pinned above the desk works better than any fancy system. Check each step off as you complete it. If you have to hand off mid-close because someone else needs the computer, the checklist tells the next person exactly where you stopped.

The biggest time-waster in a lean office is chasing down missing information: vendor invoices that weren't entered, subcontractor draws that weren't coded, payroll that didn't get allocated to jobs. Fix the upstream process, and the close gets faster every month.

When to Ask for Help

If your trial balance is consistently out of balance, your job costs don't match what you're seeing in the field, or your WIP schedule produces numbers that don't make sense, bring in a construction-focused CPA or controller for a few hours. A one-time cleanup is far cheaper than operating on bad numbers for another six months.

Construction accounting works better when the software understands jobs, cost codes, and pay apps natively. EZBilling does.