Tax Preparation Checklist for Sault Ste. Marie Small Businesses

March 9, 2026

This checklist covers what you need to gather, when your filings are due, and which deductions Northern Ontario business owners commonly miss.

## Key Deadlines for Canadian Small Businesses

Missing a CRA deadline means penalties and interest. These are the dates that matter:

### Corporate Tax (T2)

- Filing deadline: 6 months after your fiscal year-end - Payment deadline: 2 months after your fiscal year-end (3 months for Canadian-controlled private corporations with taxable income under $500,000 in the prior year) - Example: If your fiscal year ends December 31, your T2 return is due June 30, but any tax owing must be paid by February 28 (or March 31 if you qualify for the 3-month extension)

### Personal Tax (T1) for Sole Proprietors

- Filing deadline: June 15 (if you or your spouse has self-employment income) - Payment deadline: April 30 (regardless of the June 15 filing extension)

This catches many sole proprietors off guard. You get extra time to file, but not extra time to pay. Any balance owing after April 30 accrues interest.

### HST Returns

- Annual filers: 3 months after fiscal year-end - Quarterly filers: 1 month after each quarter ends - Monthly filers: 1 month after each month ends

### Payroll

- T4 slips: Must be filed and issued to employees by the last day of February - Source deductions: Remitted monthly by the 15th of the following month (some employers qualify for quarterly remittance)

## Document Checklist

Gather these documents before your tax preparer starts working on your return. The more complete your package, the faster and cheaper the process.

### Income Records

- Total revenue for the fiscal year - Sales invoices or point-of-sale reports - Bank statements showing all deposits - Records of any grants, subsidies, or government payments received - Investment income (interest, dividends) earned by the business

### Expense Records

- Rent or lease payments for your business premises - Utility bills (hydro, gas, water, internet, phone) - Insurance premiums (business, vehicle, liability) - Vehicle expenses (fuel, maintenance, insurance, lease payments) with a mileage log showing business vs. personal use - Office supplies and equipment purchases - Professional fees (legal, accounting, bookkeeping) - Advertising and marketing expenses - Subcontractor payments (with names, addresses, and amounts for T4A or T5018 reporting) - Meals and entertainment (50% deductible for business purposes) - Travel expenses - Repairs and maintenance

### Payroll Records

- Total wages paid to each employee - CPP contributions (employer and employee portions) - EI premiums (employer and employee portions) - Income tax withheld from employee pay - Records of any taxable benefits provided (health spending accounts, company vehicle, etc.)

### Other Documents

- Prior year's tax return and Notice of Assessment - HST returns filed during the year - Loan and financing agreements (for interest deduction) - Capital asset purchases (for Capital Cost Allowance claims) - Home office expenses if you operate from home (square footage calculation, portion of rent/mortgage interest, utilities, property tax)

## Deductions Sault Ste. Marie Business Owners Commonly Miss

### Northern Ontario Travel

If your business serves clients across Northern Ontario, vehicle expenses add up quickly. Sault Ste. Marie businesses often travel to Sudbury, Timmins, Thunder Bay, or smaller communities. Keep a mileage log. The CRA allows you to deduct the business-use portion of vehicle costs, but only if you can document it.

### Capital Cost Allowance (CCA)

Large equipment purchases, vehicles, and computer hardware are not fully deductible in the year you buy them. Instead, they are depreciated over time through CCA. Your tax preparer should be maximizing your CCA claims each year. Under the Accelerated Investment Incentive, many assets purchased after November 2018 qualify for enhanced first-year depreciation.

### Home Office Expenses

If you run your business from home, you can deduct a proportional share of your housing costs. This includes rent or mortgage interest (not the principal), property tax, utilities, home insurance, and maintenance. Calculate the percentage based on the square footage of your workspace relative to your total home.

### Meals with Clients

Business meals are 50% deductible. Many Sault Ste. Marie business owners forget to track these or assume they are not worth claiming. Over a year, client lunches and dinners add up. Keep the receipt and note who you met with and the business purpose.

### Bad Debts

If a customer has not paid an invoice and you have made reasonable efforts to collect, you can write off the amount as a bad debt. This reduces your taxable income and, if you already remitted HST on the sale, you can recover the HST as well.

## Frequently Asked Questions

### When should I start preparing for tax season?

Start 60 to 90 days before your filing deadline. If your fiscal year ends December 31, begin gathering documents in January. This gives your bookkeeper time to reconcile your year-end and your tax preparer time to file without rushing.

### What happens if I miss a CRA deadline?

Late filing penalties for T2 returns are 5% of the balance owing, plus 1% per month for up to 12 months. Repeat offenders face doubled penalties. Interest is charged daily on unpaid amounts at the CRA's prescribed rate.

### Do I need a bookkeeper and a tax preparer?

They serve different functions. Your bookkeeper keeps your records organized throughout the year. Your tax preparer uses those organized records to file your return and minimize your tax liability. Some firms handle both.

### Can I file my own business tax return?

Sole proprietors file business income as part of their T1 personal return, which is straightforward with good records. Corporate T2 returns are more involved and most business owners use a professional. The cost of professional preparation is itself tax-deductible.

### What records do I need to keep, and for how long?

The CRA requires you to keep all business records for at least 6 years from the end of the tax year they relate to. This includes receipts, invoices, bank statements, and payroll records.

## Start Preparing Now

Tax preparation is easier when your books are clean and your documents are organized. If you are a small business owner in Sault Ste. Marie and want help getting ready for tax season, check out Tax Titan, our tax preparation service, or contact us to book a consultation.

If you need year-end bookkeeping done before filing, learn about our year-end preparation services.

Related Services

• Year-End Preparation
• Monthly Bookkeeping Services