Year-End Tax Planning for Business Owners: A Step-by-Step Guide

Most business owners only think about tax once the year has already closed - and by then, the best opportunities are gone. Effective tax planning is a set of decisions you make before the last day of your fiscal year. Done well, it can shift tens of thousands of dollars from the CRA back into your business or family.

This guide walks through the seven moves we run with every incorporated client between October and the day before their fiscal year-end.

1. Lock in your compensation mix

Salary and dividends are taxed differently, build different retirement assets, and carry different administrative loads. The right mix usually isn’t 100% of either. The CRA views salary as an expense to the corporation, which reduces its taxable income. Dividends, conversely, are paid out of "after-tax" profits.

Worked Example: $150,000 Corporate Profit Let’s look at the math for 2026 for a business owner needing $100,000 for personal living expenses:

1. 01Option A: 100% Salary

• Corp Deducts $100,000 salary + $9,112 CPP (employer portion).
• Corp Tax: Remaining $40,888 taxed at 12.2% = $4,988.
• Personal Tax: $100,000 salary results in approx. $22,500 tax (Ontario).
• Total Tax Leakage: ~$36,600 (including CPP).

1. 01Option B: 100% Dividends

• Corp pays 12.2% tax on $150,000 = $18,300.
• Owner receives $100,000 dividend.
• Personal Tax: Dividend tax credit applied, owner pays approx. $14,000 tax.
• Total Tax Leakage: ~$32,300.

While Dividends look cheaper on paper, Option A creates $18,000 in RRSP room for 2027 and provides CPP credits. The "cheapest" tax is often not the "best" wealth-building strategy.

2. Time capital purchases before year-end

The Capital Cost Allowance (CCA) clock starts the day an asset is available for use, not the day it’s invoiced. Buying a $20,000 piece of equipment on December 30 and putting it into service can generate a current-year deduction; waiting until January 2 pushes it twelve months out.

3. Clear shareholder loans

If you’ve drawn money from your corporation and it isn’t a salary, dividend, or legitimate reimbursement, it shows up as a shareholder loan. Under subsection 15(2) of the Income Tax Act, if a balance owing isn’t repaid within one year after the end of the corporation’s fiscal year in which it arose, the entire amount is added to your personal income in the year you borrowed it - with interest assessed by the CRA on top.

The CRA’s logic is simple: they want to prevent owners from treating the corporate bank account as a personal ATM without paying personal tax.

Options before the deadline:

• Repay in cash: Transfer personal funds back to the corp.
• Declare a Dividend: Paper the transaction as a dividend to offset the draw.
• Declare a Bonus: Use a year-end bonus (deductible to the corp) to clear the loan.

4. Write off bad debts and dead inventory

Two of the most-missed year-end deductions:

• Bad debts: an invoice you’ve genuinely given up on can be written off if you can show reasonable collection efforts. Send the formal demand letter before year-end so the documentation trail is in the right fiscal period.
• Obsolete inventory: stock that can no longer be sold at cost should be written down to net realizable value (NRV) before the count. If you have $50,000 of stock that is only worth $10,000 on the open market, that $40,000 loss belongs in the current year’s tax return.

5. Top up the right accounts before December 31

1. 01RRSP: contributions for the current calendar year can be made up to 60 days into the next year, but if you’re using a bonus to create earned income, declare it before year-end. (2026 Limit: 18% of earned income, max ~$33,000).
2. 02TFSA: the contribution room is calendar-year based - the 2026 annual room is $7,500 and re-opens January 1.
3. 03FHSA: if eligible, $8,000/year, lifetime $40,000 - deductible like an RRSP and tax-free out like a TFSA. It is a "use it or lose it" annual room (mostly).
4. 04RESP: the $2,500/year contribution that attracts the 20% CESG grant must be in by December 31 to count for that year.

6. Review the passive-income test

If your CCPC and associated corporations earn more than $50,000 of passive investment income (AAII), you start losing the $500,000 Small Business Deduction (SBD) limit at a rate of $5 for every $1 over. At $150,000 of passive income, the SBD is fully ground down and active income jumps from ~12.2% to ~26.5% (the general corporate rate).

7. Charitable giving and CDA dividends

• Charitable donations made by the corporation before year-end reduce taxable income dollar-for-dollar (up to 75% of net income). For a corp at the SBD rate, a $1,000 donation saves $122 in tax.
• If your corporation has a positive Capital Dividend Account (CDA) balance from realized capital gains, declaring a capital dividend before year-end gets tax-free cash into shareholders’ hands.

Year-end planning is the difference between a corporate tax bill that reflects what you actually built this year, and one that reflects what your bookkeeper happened to enter. We typically start this conversation with clients in October so there’s runway to actually execute.