December’s a strange month for accounting firms. Everyone else is winding down, and you’re staring at thirty client files that need to close clean before January hits.
One unreconciled bank account or missed accrual can ripple into Q1 compliance headaches.
This checklist isn’t theory. It’s the workflow most Canadian CPAs follow when they’re managing multiple clients and can’t afford surprises during tax season. By the end, you’ll have a repeatable process that reduces rework and keeps your year-end organized.
1. Bank and Credit Account Reconciliation
Start here because everything downstream depends on clean cash positions.
Why it matters: Unreconciled bank accounts hide duplicate entries, missing transactions, and timing differences that inflate or deflate your cash balance. If your bank rec is off by 2% across ten clients, you’re looking at hours of January cleanup.
Your checklist:
- Match bank feeds to general ledger entries for all operating accounts
- Flag and investigate any outstanding items older than 30 days
- Reconcile credit card statements and loan accounts separately
- Post missing merchant entries or adjust duplicates before period close
- Run a quick variance check: pull 10 random client bank recs and confirm <1% unreconciled balances
Visual checkpoint: Your accounting software should show a green “Reconciled” status with zero outstanding items in the dashboard.
If you see red flags or unmatched transactions, stop and investigate before moving forward.
2. Aged AR and AP Review
Revenue overstatement is one of the ugliest year-end surprises, and it usually starts with ignoring aged receivables.
Why it matters: Uncollectible AR inflates revenue. Clients who haven’t paid in 90+ days probably won’t, and if you don’t provision for write-offs now, your financial statements misrepresent actual performance.
Your checklist:
- Generate aged AR and AP reports for all clients
- Highlight any invoices over 60 days with no follow-up activity
- Provision 5-10% of AR balances over 90 days as doubtful accounts
- Send final collection reminders or prepare write-off documentation with board approval
- Review AP for unrecorded vendor invoices that should hit this fiscal year
Verification check: Sample five aged AR invoices over 60 days.
If there’s no documented follow-up or collection plan, you need to batch reminders or formalize write-offs before closing.
3. Fixed Asset Register and CCA Schedule
Capital assets are easy to forget until an auditor asks for depreciation support.
Why it matters: New acquisitions, disposals, and depreciation adjustments all need to hit the books before year-end.
Missing these creates audit disallowances and overstated asset values.
Your checklist:
- Update the fixed asset register with all new capital expenditures
- Record disposals and remove fully depreciated assets
- Run the CCA schedule for each client to calculate accelerated depreciation where eligible
- Post full-year depreciation journal entries to the general ledger
- Confirm the fixed asset register balances match G/L account totals
Visual checkpoint: Your CCA schedule should show a “Full Year Posted” flag, and your G/L should reflect matching depreciation entries.
If they don’t align, update the register first.
4. Accruals and Cutoff Adjustments
This is where firms lose deductions. Expenses incurred but not yet paid need to land in the right fiscal year.
Why it matters: Missed accruals shift expenses forward, inflating current-year profit and triggering higher tax.
Accruing unbilled services, utilities, or contractor fees now keeps your income statement accurate.
Your checklist:
- Review suspense, clearing, and adjustment accounts for unresolved balances
- Accrue all unbilled services, outstanding invoices, and incurred-but-unpaid expenses
- Backdate accrual journal entries with vendor confirmations where needed
- Confirm deferred revenue balances reflect unearned income carried into next year
- Check for one-time entries that were never reversed or revisited
The reality: About 30-50% of small firms miss accrual adjustments, risking 10-20% tax leakage.
If you’re using the accrual method, this step is non-negotiable.
5. Inventory Count and Obsolescence Review
Physical inventory discrepancies create FS imbalances that auditors will flag.
Why it matters: Your G/L inventory balance should match what’s actually on hand.
Obsolete stock sitting on the books overstates assets and distorts cost of goods sold.
Your checklist:
- Conduct a physical inventory count for all clients with stock
- Adjust G/L balances to match physical counts
- Provision for obsolete or slow-moving inventory
- Review inventory valuation methods for consistency
- Document count procedures and variances for audit support
Verification check: If your inventory adjustments don’t balance to your financial statements, recount and reprovision before closing.
6. Payroll Reconciliation and Source Deductions
Multi-jurisdiction payroll is where firms hit CRA penalties. CPP and EI mismatches across provinces create compliance gaps.
Why it matters: If your T4 previews don’t match bank withdrawals for source deductions, you’re filing incorrect slips.
That triggers penalties and audit risk.
Your checklist:
- Reconcile payroll reports to bank statements for CPP, EI, and income tax remittances
- Run a payroll variance report and flag any anomalies over 1%
- Confirm provincial jurisdiction rules for remote workers are applied correctly
- Prepare ROEs for any terminating employees and confirm e-filing deadlines
- Preview T4 slips for three sample clients to ensure totals match payroll ledgers
Visual checkpoint: Your payroll software should show balanced totals with no red variance flags.
If CPP/EI totals don’t match bank records, stop and reconcile source deductions before generating final T4 summaries.
7. HST/GST Reconciliation and Remittance Verification
Unremitted HST balances are one of the first things CRA notices.
Why it matters: Your general ledger HST accounts should tie to filed returns.
Missed instalments or unrecorded remittances create liabilities that compound with interest.
Your checklist:
- Reconcile quarterly HST/GST returns to G/L balances
- Confirm all instalment payments align with CRA My Business Account records
- Review input tax credits for documentation support
- Flag any unremitted balances and schedule payments before fiscal close
- Verify filing status shows “Filed” in the CRA portal
The ghost error: Firms managing multiple clients often miss jurisdiction-specific HST rules.
Use a RACI matrix to assign review owners for each client’s filing.
8. Tax Slip Preparation and Compliance Deadlines
T4 and T5 slips have hard deadlines. Missing February 28 creates penalties that scale with client count.
Why it matters: Late or incorrect slips trigger CRA penalties and client dissatisfaction.
Batch-generating slips now gives you time to review before the deadline.
Your checklist:
- Batch-generate T4 slips for employee payroll across all clients
- Prepare T5 slips for investor dividends where applicable
- Confirm GRIP calculations for eligible dividends to avoid Part III.1 tax
- Review slip totals against payroll and dividend ledgers
- Schedule e-filing for all slips by February 28
Verification check: Pull T4 previews for three clients. If CPP/EI or income tax totals don’t match bank withdrawals, reconcile payroll before finalizing.
9. Documentation and Audit Readiness
Clean books mean nothing if you can’t support them under audit.
Why it matters: Missing receipts, weak mileage logs, or undocumented adjustments create disallowances.
Organizing support docs now saves hours during CRA reviews.
Your checklist:
- Scan and categorize all receipts for vehicle, home office, and travel expenses
- Maintain mileage logs with dates, destinations, and business purpose
- Document all material journal entries with explanations and approvals
- Organize vendor invoices and contracts for accrued expenses
- Confirm SR&ED claims have eligible R&D documentation attached
The fix: Firms using OCR tools for receipt capture cut audit disallowances from 40% to under 5%. If you’re still manually filing paper, this is where friction lives.
10. Final Review and Sign-Off
Before you close the year, run one last validation across all client files.
Your checklist:
- Pull trial balances for all clients and confirm no suspense account buildup
- Review financial statement drafts for obvious errors or formatting issues
- Confirm all reconciliations, accruals, and adjustments are posted
- Schedule partner or senior review for material clients
- Lock the fiscal period in your accounting software once sign-off is complete
Visual checkpoint: A clean trial balance with zero unreconciled accounts and balanced financial statements.
If anything looks off, don’t lock the period yet.
Ready to Simplify Your Year-End?
Year-end doesn’t have to be chaotic. Most surprises come from skipped steps, not complex accounting. Work through this checklist methodically, and you’ll close the year with fewer fires to fight in January.
Don’t let another year-end burn out your team. Streamline your reconciliation, reporting, and client management with a centralized platform built for Canadian firms.
