How to Run a Flawless Law Firm Month-End Close in 2026: A Step-by-Step Guide

📅 Why Month-End Close Matters More Than You Think

Month-end close is not a bureaucratic ritual. It is the moment when your firm's financial data transforms from a running log of transactions into a reliable, decision-ready picture of where you stand. Without a clean close, your P&L may be inaccurate, your trust balances may be unverified, and your billing realization numbers may be lying to you.

The problem is that most law firms treat month-end close as something that happens eventually — usually when the managing partner asks for the numbers. The result is a chaotic scramble, missed entries, and financials that nobody fully trusts.

The solution is a defined, sequenced close process. Here is how the best-run law firms do it.

🗓️ The Month-End Close Sequence: 5 Steps in the Right Order

Order matters in accounting. Closing steps have dependencies — you cannot reconcile your bank account before you have recorded all transactions, and you cannot produce a reliable P&L before your bank reconciliation is complete. Here is the correct sequence:

Step 1: 📥 Close Out Unbilled Time and Expenses (Days 1–2)

The first task is ensuring all billable activity from the prior month is captured. This means:

• Reviewing all open time entries and confirming they are either billed, written off, or carried forward with an explanation
• Confirming all hard costs (court fees, filing fees, expert costs) have been entered as disbursements linked to the correct matter
• Reviewing soft costs (copies, postage, internal charges) and posting them to the appropriate matters
• Finalizing any pre-bills that were in draft status and sending or posting invoices

Step 2: 🏦 Complete Bank and Trust Reconciliations (Days 2–4)

Reconciliation is the backbone of month-end close — and for law firms, it is more complex than for most businesses because of trust accounting requirements.

Operating account reconciliation: Match every transaction in your bank statement to a corresponding entry in your general ledger. Identify and clear any timing differences (checks in transit, deposits in transit). Flag and investigate any unmatched items.

Trust account reconciliation (three-way): This is the compliance-critical step. A proper law firm trust reconciliation compares three numbers that must agree:

• The bank statement balance (what the bank shows)
• The trust ledger balance (what your accounting records show)
• The sum of individual client matter balances (what each client is owed)

If these three numbers do not agree, you have a trust accounting problem — and you need to find it before closing the month.

Step 3: 📝 Post Month-End Journal Entries (Days 3–5)

After reconciliations are complete, it is time to post any month-end adjusting entries. Common law firm month-end journal entries include:

• Accruals: Expenses incurred but not yet invoiced (rent, utilities, software subscriptions)
• Prepaid amortization: Allocating prepaid expenses (insurance, annual software fees) to the correct month
• Depreciation: Recording monthly depreciation on furniture, equipment, and leasehold improvements
• Interest income: Posting interest earned on operating accounts
• Payroll true-ups: Confirming payroll entries match actual payroll runs for the month

Step 4: 📊 Run and Review the Trial Balance (Day 5–6)

Once all entries are posted, run your trial balance. A trial balance lists every GL account with its debit and credit balances. Total debits must equal total credits — if they do not, you have a posting error somewhere that needs to be found and corrected before proceeding.

Beyond just balancing, review the trial balance for reasonableness:

• Are revenue accounts showing expected billing volumes for the month?
• Are expense accounts in line with prior months or budgeted amounts?
• Are any accounts showing unusual balances that need explanation?
• Are trust liability balances matching your trust reconciliation totals?

Step 5: 📈 Produce and Distribute Financial Reports (Days 6–8)

With a clean trial balance in hand, generate your month-end financial package. At minimum, this should include:

• Income Statement (P&L): Revenue, expenses, and net income for the month and year-to-date
• Balance Sheet: Assets, liabilities, and equity as of month-end
• Cash Flow Statement: Sources and uses of cash for the month
• Trust Account Report: Three-way reconciliation confirmation for each trust account
• AR Aging Report: Outstanding receivables by aging bucket (0–30, 31–60, 61–90, 90+ days)
• Matter Profitability Report: Revenue vs. cost by matter or practice area

🚀 How Integrated Accounting Software Compresses Close Time

Manual close processes — spreadsheets, separate accounting software, manual reconciliations — take significantly longer and introduce more errors than integrated platforms. When your practice management and accounting systems are the same platform, several close steps happen automatically: