Year-End Tax Planning Checklist for Small Business (2026)

The gap between a stressful tax season and a smooth one usually comes down to what you did before December 31, not after. Once the calendar turns, most of the levers that reduce a corporation's tax bill are gone for the year. Effective year-end tax planning for a small business is really a series of small, deliberate decisions made in the last quarter, and the good news is that none of them require heroics. This checklist walks through the moves worth reviewing before your fiscal year closes, so you can keep more cash in the business and hand your accountant a clean file.

Start with your fiscal year-end, not December 31

The single most common mistake is assuming every deadline lands on December 31. That date matters for your personal taxes and for anything paid through the corporation to you as an individual, but a corporation is taxed on its own fiscal year. If your company has a June or September year-end, your planning window is different, and some of the moves below need to happen before your year closes rather than before the calendar flips. The first step is simply to confirm your corporate year-end and count backwards from there.

Get the salary and dividend mix right

For an owner-managed corporation, how you pay yourself is the biggest lever you have. Salary is deductible to the corporation, creates RRSP contribution room, and generates Canada Pension Plan contributions. Dividends are not deductible and do not build RRSP room, but they avoid CPP and can be simpler to administer. There is no universal right answer; it depends on how much you need to draw personally, your RRSP goals, and the corporation's income level.

A few things to weigh before year-end:

• Paying a salary or bonus lets the corporation deduct it, but the amount has to be reasonable and the related payroll source deductions remitted on time.
• Salary builds RRSP room for the following year, calculated as 18% of earned income up to the annual dollar limit.
• CPP and the second additional contribution (CPP2) both apply to salary. CPP2 is fully in effect and adds contributions on earnings between the first ceiling (the YMPE) and a higher second ceiling, so more salary means more total contributions from both you and the corporation.
• Keeping the corporation's taxable income at or below the small business deduction limit of $500,000 preserves the low small business tax rate on active income.

Time income and expenses deliberately

Within the rules, you have some control over which side of the year-end a dollar falls. If you expect a similar or lower tax rate next year, deferring income and accelerating deductible expenses shifts tax into the future and keeps cash in the business now. Practical examples include prepaying a business expense that genuinely relates to the coming period, purchasing supplies you will need anyway, or delaying the invoicing of a late-December project into the new year where that reflects when the work is actually done.

A word of caution: revenue has to be recognized when it is earned, and you cannot simply hold invoices to dodge tax. The timing has to reflect economic reality. This is about legitimately sequencing decisions you were going to make regardless, not manufacturing a paper delay.

Year-end planning is not about finding loopholes. It is about making the decisions you were going to make anyway on the side of the calendar that costs you less tax.

Make capital purchases count

If your business needs new equipment, a vehicle, computers, or tools, buying before year-end can accelerate the deduction. To claim capital cost allowance (CCA) for the year, the asset generally needs to be purchased and available for use before your year-end, not just ordered. Several categories of property still qualify for enhanced first-year write-offs, and certain clean-energy and productivity investments carry immediate expensing, so the value of the deduction can be meaningful in the first year.

Do not let the tax tail wag the dog, though. A purchase you did not need is not a saving; a deduction only returns a fraction of what you spend. Buy the equipment because the business needs it, then time it well.

Top up registered accounts and plan personal draws

Year-end is the moment to line up the personal side too, since much of it depends on income the corporation paid you this year.

RRSP, TFSA and FHSA

• RRSP contributions for the 2026 tax year can be made until the deadline in the first 60 days of 2027, but reviewing your available room now avoids a scramble.
• TFSA room is not tied to income and carries forward; confirm your contribution limit through CRA My Account before adding funds.
• If you are saving toward a first home, the First Home Savings Account offers a deduction like an RRSP plus tax-free withdrawals like a TFSA, and the room is worth using before it stacks up unused.

Watch the lower personal rate

For 2026 the lowest federal personal income tax rate was reduced to 14%, which slightly changes the value of some personal deductions and credits. It is a modest shift, but it is one more reason to look at your personal and corporate picture together rather than in isolation.

Clean up the books before they close

A tidy set of books at year-end costs less to prepare and reduces the chance of a missed deduction. Before the year closes, it is worth working through the housekeeping items that are easy to forget once the period is locked:

• Reconcile your bank and credit card accounts and chase down any unexplained differences.
• Review accounts receivable and write off amounts that are genuinely uncollectible so you are not paying tax on income you will never see.
• Count and value inventory if you carry any.
• Record shareholder loan movements and make sure any balance you owe the company is dealt with before it triggers an income inclusion.
• Gather receipts for vehicle use, home-office costs, and meals and entertainment, which are the deductions most often lost to poor records.

Confirm instalments, remittances and payroll ceilings

Finally, check that you are current on what you already owe. Corporate tax instalments, payroll source deductions, and GST/HST remittances all carry interest and penalties when they are late, and that cost is not deductible. Reviewing your instalment account before year-end tells you whether you are ahead, behind, or on track, and lets you make a catch-up payment while it still helps. If you run payroll, confirm you have applied the current CPP, CPP2 and EI ceilings correctly for the year so there are no surprises on the year-end filings.

Every business is a little different, and the right combination of these moves depends on your income, your goals, and your fiscal year. If you would like a second set of eyes on your numbers before the year closes, book a consultation with us or learn more about our corporate tax services. A short conversation now is almost always cheaper than a missed opportunity in the spring.

This article is general information, not tax, legal, or financial advice. Rules and figures are current as of 2026 and can change. Please confirm your own situation with Lewis Partners.