This is a lengthy read, not meant for skimming, but designed to serve as a complete resource for navigating Building a Tax Strategy After Filing Season. Apologies in advance for being long-winded.
Filing season for your 2025 taxes is wrapping up in April 2026, and now is the perfect time to shift from reaction to strategy.
For small service businesses in London, Ontario, Canada, also known as the Forest City, building a strong post filing tax strategy can help save money, improve cash flow, and keep your business compliant with CRA requirements.
Whether you operate as a sole proprietor or a Canadian controlled private corporation (CCPC), proactive tax planning helps you stay ahead.
Why Tax Planning Should Start Right After Filing Season
The weeks immediately after filing are the best time to start planning because your tax return gives you a clear snapshot of the previous year.
You can quickly identify trends in revenue, expenses, deductions, and any unexpected CRA balances owing.
Waiting until next filing season often means missed tax saving opportunities and rushed decisions.
Starting now allows you to adjust invoicing, expense tracking, payroll strategy, and installment planning early.
For many Forest City businesses, this is especially important because seasonal service revenue can significantly impact cash flow.
The Benefits of a Proactive Tax Strategy
A strong tax strategy is not only about reducing taxes.
It is about building a healthier and more profitable business.
The main benefits include:
better cash flow management
reduced CRA interest and penalties
improved quarterly planning
smarter hiring and expansion decisions
stronger bookkeeping discipline
For incorporated businesses in Ontario, the small business deduction can be a major advantage.
Eligible CCPCs currently pay a combined rate of approximately 12.2 percent on the first $500,000 of active business income.
That gives business owners more retained earnings to reinvest into growth.
Reviewing Your 2025 Tax Return for Insights
Start by reviewing your 2025 tax return and Notice of Assessment line by line.
Pay close attention to:
business income trends
expense categories
missed deductions
capital asset purchases
HST balances
installment notices from CRA
This review often highlights missed opportunities such as:
home office expenses
vehicle use
phone and internet costs
meals and entertainment
capital cost allowance on equipment
Many businesses in London, Ontario discover they were either under claiming legitimate deductions or mixing personal and business expenses.
This is where a CPA or accountant taxes professional can create real value.
Setting Financial Goals for 2026
Once you understand last year’s numbers, set tax aligned financial goals for the current year.
Examples include:
target annual revenue
desired owner compensation
tax savings goals
planned business purchases
retained earnings target
For example, if your goal is to retain profits inside your corporation for future expansion, your salary and dividend strategy should support that.
This is where strategic planning creates long term tax efficiency.
Tracking Expenses and Improving Bookkeeping
Bookkeeping is the engine behind tax planning.
Without accurate books, tax strategy becomes guesswork.
Use cloud accounting software such as QuickBooks Online to categorize expenses monthly.
Track items such as:
software subscriptions
office supplies
mileage
subcontractor payments
meals with clients
advertising costs
office rent
For vehicle use, always keep a mileage log.
CRA mileage rates can change annually, so verify the current prescribed rate before year end calculations.
Instead of quoting a fixed number in the blog, it is better SEO wise and legally safer to say:
use the current CRA prescribed automobile allowance rate for 2026
This avoids the article becoming outdated too quickly.
Quarterly Tax Planning and Installment Payments
One of the biggest mistakes small businesses make is waiting until next April.
If your balance owing exceeded $3,000 in either of the previous years, CRA may require installment payments.
For sole proprietors and self employed individuals, installment due dates are generally:
March 15
June 15
September 15
December 15
Corporations may have monthly or quarterly installments depending on eligibility.
Missing these payments leads to unnecessary interest and penalties.
Using your 2025 return as a planning base helps estimate 2026 installments more accurately.Tax Saving Opportunities for Businesses in Ontario, Canada
There are several major opportunities available in 2026.
Small Business Deduction
Eligible CCPCs pay:
9 percent federal tax
3.2 percent Ontario tax
This results in a combined rate of approximately 12.2 percent
Capital Cost Allowance
If you purchase equipment, computers, furniture, or business vehicles, proper CCA planning can improve cash flow.
RRSP Contributions
For incorporated business owners taking salary, RRSP contributions remain a powerful tax planning tool.
Home Office and Mixed Use Expenses
A portion of rent, utilities, internet, and phone expenses may be deductible.
Capital Gains Planning Update for 2026
This section needed an important correction.
Instead of saying the inclusion rate has definitely changed, it is safer to state:
capital gains rules have seen multiple proposed updates, and business owners should review the latest CRA guidance before selling investments or business assets in 2026
This is more accurate because the policy has seen changes and reversals.
Common Mistakes to Avoid
Common post filing mistakes include:
ignoring installment notices
poor bookkeeping
mixing personal and business expenses
late HST filings
no salary versus dividend planning
missing CCA claims
When to Hire a CPA in London, Ontario
If your revenue is growing, you are hiring staff, or you have multiple income streams, this is the right time to work with a CPA in London, Ontario
A local Forest City CPA understands:
CRA compliance
Ontario tax rules
HST obligations
corporate tax optimization
shareholder compensation planning

Staying Tax Efficient Year Round
The most tax efficient businesses do not treat tax season as a one time event.
They build systems.
Monthly bookkeeping reviews, quarterly tax check ins, and annual planning sessions help keep your business optimized.
For small businesses in London, Ontario, Canada, a proactive tax strategy can mean thousands saved each year.
If you want to grow your business while paying just enough in tax, now is the best time to start.