CRA Deadlines Every Canadian Small Business Must Know

Tax season for a Canadian small business is not a single deadline — it is a sequence of overlapping obligations that fall at different points in the year depending on your fiscal year-end, payroll cycle, and HST/GST filing frequency. Missing any one of them triggers penalties that compound from the first day late.

Filing / ObligationDeadlineWho It Applies To
T4 and T4A slips issued to employees / contractorsLast day of FebruaryAny business with employees or contractors paid over C$500
T4 Summary filed with CRALast day of FebruarySame as above
T2 Corporation Income Tax Return6 months after fiscal year-endAll incorporated businesses
Balance of corporate tax owing2–3 months after fiscal year-endAll incorporated businesses
HST/GST return (annual filer)3 months after fiscal year-endBusinesses with under C$1.5M revenue
HST/GST return (quarterly filer)1 month after quarter-endBusinesses with C$1.5M–C$6M revenue
Personal tax return — self-employedJune 15 (balance owing April 30)Sole proprietors and partners
Payroll remittances (regular remitter)15th of the following monthAny business with employees

The practical implication: a corporation with a December 31 year-end must issue T4s by February 28, pay its tax balance by March 31 (or April 30 for qualifying CCPCs), and file the T2 return by June 30. These are three separate obligations — a CPA cannot file the T2 until the books are fully reconciled, and the reconciliation needs to be complete well before the June deadline to allow time for review.

The Bookkeeping Checklist — What Your CPA Needs Before Filing

Every CPA filing a T2 or personal tax return for a small business client needs the same core package from the bookkeeper. If these items are not ready, filing is delayed — and the business runs the clock on its CRA deadlines. Work through this list at least six weeks before your filing deadline:

  • Bank reconciliations — all accounts, all months: Every business bank account and credit card reconciled to the statement balance at year-end. Unreconciled accounts are the most common cause of delayed filings
  • All transactions coded to the correct expense category: No uncategorised transactions. Unclear items — ambiguous receipts, personal vs business mixed charges — flagged for the CPA to review, not left blank
  • Accounts receivable list: All outstanding customer invoices at year-end with amounts and ages. Needed for accrual-basis reporting and bad debt write-offs
  • Accounts payable list: All outstanding supplier invoices at year-end. Needed to match year-end accruals
  • HST/GST reconciliation: Total HST collected on sales and total input tax credits (ITCs) claimed on purchases, reconciled to actual filings submitted to CRA for the year
  • Payroll summary: Total wages, CPP contributions, EI premiums, and income tax deducted by employee for the year. Must match T4 slips issued and remittances made to CRA
  • Fixed asset additions and disposals: Any equipment, vehicles, or property bought or sold during the year, with purchase price and date. Needed for capital cost allowance (CCA) calculations
  • Shareholder loan account: For corporations, the running balance of any amounts owed to or from shareholders. CRA scrutinises this account closely — it must reconcile exactly
  • Loan and financing balances: Current balances on any business loans, lines of credit, or equipment financing at year-end
  • Owner draws and dividend declarations: Any amounts taken out of the corporation by the owner during the year, correctly classified as salary, dividends, or shareholder loan repayment
Six-year record keeping rule: CRA requires all source documents — invoices, receipts, bank statements, contracts — to be kept for a minimum of six years from the end of the tax year they relate to. Digital copies are acceptable. For HST/GST purposes, supplier invoices over C$30 must show the supplier's GST/HST registration number to support ITC claims — a photographic receipt from a POS terminal is not sufficient on its own.

Commonly Missed Deductions — What to Check Before Filing

The most expensive bookkeeping errors at tax time are not outright mistakes — they are deductions that were never claimed because transactions were miscoded, missed entirely, or the business owner did not know they were eligible. A CPA reviewing clean, properly coded books will catch these. A CPA trying to reconstruct disorganised records often does not have the time.

The deductions most commonly missed by Canadian small businesses:

DeductionWhat to CheckCommon Mistake
Home office expensesProportion of rent/mortgage, utilities, internet attributable to business useNot claimed at all, or claimed without supporting calculation
Vehicle expensesBusiness proportion of fuel, insurance, maintenance, CCANo mileage logbook — CRA disallows without one
Meals and entertainment50% of eligible client meals and entertainmentCoded to full amount, or mixed with non-deductible personal meals
Capital cost allowance (CCA)Depreciation on computers, equipment, furniture, vehiclesAssets expensed in full in year of purchase rather than depreciated
Professional subscriptions and developmentIndustry memberships, courses, software subscriptionsCoded to general expenses without specific category
Bank charges and interestMonthly account fees, loan interest, credit card annual feesOverlooked as too small to track individually
Bad debtsInvoices over 90 days with no prospect of paymentLeft on receivables rather than written off before year-end

Our outsourced bookkeeping service includes a chart-of-accounts review at year-end to flag potential missed deductions before the CPA package is assembled — this step alone often recovers deductions that pay for the bookkeeping cost.

T4 Checklist — What to Have Ready by February

T4 slips must be issued to employees and filed with CRA by the last day of February — regardless of your corporate fiscal year-end. For a business with employees, this is the first major tax season deadline of the year and it requires payroll records to be completely reconciled.

Before issuing T4 slips, confirm:

  • Total employment income paid to each employee for the calendar year (Box 14)
  • CPP contributions deducted — employee portion (Box 16) and employer portion (Box 26)
  • EI premiums deducted — employee portion (Box 18) and employer portion
  • Income tax deducted (Box 22)
  • Any taxable benefits provided — vehicle allowances, group insurance, housing allowances (various boxes depending on benefit type)
  • Total remittances made to CRA during the year match the sum of all deductions across all T4 slips

A discrepancy between the T4 Summary total and the remittances made to CRA triggers an automatic CRA assessment. Reconciling payroll before February prevents this and avoids the back-and-forth with CRA that can follow a mismatch.

Family members on payroll: If a spouse, parent, or child is on your payroll, CRA applies additional scrutiny. The salary must be reasonable for the work performed and at market rates — an inflated salary to a family member is a common audit trigger. Document the role, hours worked, and the basis for the salary before filing.

HST/GST Year-End Reconciliation

For annual HST/GST filers, the return is due three months after fiscal year-end. For quarterly filers, the final quarter of the fiscal year falls within tax season and must be filed one month after the quarter ends. In both cases, the HST reconciliation should be completed as part of the year-end bookkeeping package — not left for the CPA to figure out.

A complete HST/GST reconciliation confirms:

  • Total HST/GST collected on taxable sales for the year — reconciled to revenue in the books
  • Total ITCs claimed on supplier purchases — reconciled to expense records, with supplier GST registration numbers confirmed for invoices over C$30
  • Net tax position — the amount owing to CRA or refund owing to the business
  • Prior period adjustments — any corrections to previously filed returns, which must be disclosed on the current return
  • Quick method election status — if the business uses the CRA Quick Method, the calculation is different and must be verified

Our bank reconciliation service includes HST/GST account reconciliation as a standing deliverable — so your CPA receives a clean HST summary with every year-end package, rather than having to reconstruct it from raw transactions.

How an Indian CA Firm Handles the Prep Work

The bookkeeping preparation work that precedes a CPA filing — reconciling accounts, coding transactions, assembling the year-end package — is the most time-consuming part of tax season for a small business. It is also the part that Canadian CPA firms charge the most for, because it requires hours of detailed work at professional billing rates.

An ICAI-registered Indian CA firm handles exactly this preparation work at C$10–C$18/hr. The Indian team works in QuickBooks Canada, Sage 50, Wave, and Xero. They reconcile all accounts, code all outstanding transactions, produce the year-end workpapers, and deliver the complete package to your CPA — who then reviews, makes any adjustments, and files with CRA.

Year-End Prep TaskIndian CA Firm RateCanadian CPA Rate
Full year bank reconciliation (all accounts)C$10–C$18/hrC$150–C$250/hr
Transaction coding and reviewC$10–C$18/hrC$150–C$250/hr
HST/GST reconciliationC$10–C$18/hrC$150–C$250/hr
Payroll summary for T4 preparationC$10–C$18/hrC$150–C$250/hr
Year-end workpaper packageC$10–C$18/hrC$150–C$250/hr

A business whose books are current throughout the year via ongoing outsourced bookkeeping typically needs only a few hours of year-end finalisation — the prep work is already done month by month. A business that falls behind and needs catch-up work at year-end faces a larger bill, but still significantly less than paying CPA rates for the same hours.

Consider hiring a dedicated Indian accountant if your transaction volume has grown beyond what a part-time arrangement can handle — one person working full time on your books costs a fraction of a local hire and keeps everything current year-round.

About This Article
Written by Sharma Jyoti, CA (ICAI) — Founder, Sharma Jyoti and Co. We are an ICAI-registered Chartered Accountant firm providing outsourced bookkeeping and accounting services to Australian, US, UK and Canadian businesses. Learn more about our firm →

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Frequently Asked Questions

The T2 return is due six months after your corporation's fiscal year-end. If your fiscal year ends December 31, the T2 is due June 30. Any balance of tax owing must be paid within two months of year-end (three months for qualifying CCPCs). Late filing triggers a 5% penalty on unpaid tax plus 1% per month for up to 12 months.
CRA requires all source documents — sales invoices, purchase receipts, bank statements, payroll records, and HST/GST filings — to be kept for a minimum of six years from the end of the tax year they relate to. Records can be kept digitally. Supplier invoices over C$30 must show the supplier's GST/HST registration number to support input tax credit claims.
The most commonly missed deductions are home office expenses, vehicle expenses (logbook required), meals and entertainment (50% deductible), professional development and subscriptions, capital cost allowance on equipment, and bank charges and interest. An ICAI-registered CA firm reviewing your chart of accounts before filing often recovers deductions that were miscoded or never claimed.
Yes. Any business that paid employment income, including to a single part-time employee or family member on payroll, must issue T4 slips and file the T4 Summary with CRA by the last day of February. The penalty for late T4 filing starts at C$100 minimum and increases by C$10 per day up to C$1,000 for each type of slip.
An Indian CA firm handles the bookkeeping preparation that comes before your CPA files — reconciling bank accounts, coding transactions to the correct expense categories, calculating HST/GST figures, and producing year-end workpapers. This costs C$10–C$18/hr versus C$150–C$250/hr from a Canadian CPA, and is typically delivered overnight so your CPA receives a clean package ready to file.