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Accounting and tax are two jobs that overlap. Accounting keeps the record of what came in and went out. Tax work turns that record into a return and a payment. For a sole proprietor filing a 2025 return, the deadline was June 15, 2026, but any tax owing was due April 30, 2026, and the CRA says to keep records for six years.
What is the difference between accounting and tax work?
Bookkeeping is the daily part: recording sales, expenses and payroll, and matching them to the bank. Accounting builds on that with statements and a view of how the business is doing. Tax filing takes the year’s numbers and applies the rules.
The lines blur, and firms bundle them. We can’t tell you who’s best or what any of it costs, because we found no official source for fees or rankings. What you can do is decide which of the three you need and ask about that.
Which records does the CRA expect you to keep?
The CRA describes records as all your accounting and financial documents, kept organized. That covers income and expenses, vehicle logs, property records and, where they apply, GST/HST and payroll records. Paper, electronic or a mix all work.
Six years is the standard period from the end of the last tax year the record relates to. There are exceptions. Records for a late-filed return run six years from the filing date, and records on long-term property or share registers can need to be kept indefinitely. Records normally have to be kept at your business or home in Canada unless the CRA agrees in writing to another place.
| Situation | How long to keep records |
|---|---|
| Ordinary year | 6 years from the end of the last tax year they relate to |
| Late-filed return | 6 years from the filing date |
| Dissolved corporation | 2 years after dissolution |
| Long-term property, share registers | Can be indefinite |
What does the tax side cost you in a year?
Take an Ontario sole proprietor with $80,000 of net income. The self-employed tax calculator shows $8,698.44 of federal tax, $4,535.12 of Ontario tax and $8,892.90 of CPP, for $22,126.47, or 27.7% of income. You leave $57,873.53. It doesn’t include GST/HST, EI or expenses, and its deductions lower income tax without changing CPP, so treat it as a starting point.
Now think about timing. Instalments come due when you expect to owe more than $3,000 (the threshold is $1,800 for Quebec). The dates are March 15, June 15, September 15 and December 15. The tax instalments calculator splits an expected $9,000 of tax into four payments of $2,250. Good books are how you know that $9,000 figure in the first place.
When does an accountant pay for itself?
When the mistakes cost more than the fee. Selling a rental, running payroll, charging GST/HST or setting up a corporation are all cases where a slip is expensive. The corporate tax calculator shows how the rate structure changes once a company is involved. On the small business rate in Ontario, the combined figure is a derived blend of federal and provincial rates, so we’d verify it before planning around it.
For a one-person side job with a few invoices, a spreadsheet and the calculators may be enough. Nobody needs an annual package to track twelve sales.
Mistakes to avoid
Mixing personal and business spending is the big one. Waiting until April to look at the year is the next, because you can’t plan instalments, and you can’t check the GST/HST calculator against your sales if the sales aren’t recorded.
And don’t assume the person doing your books answers for what’s filed, because the return has your name on it, whoever typed the numbers in and however tidy the file looks. Ask for copies of everything, and never sign something blank.
Where the numbers come from
Record-keeping periods and the June 15 and April 30 dates come from Canada Revenue Agency pages read in September 2026. The 2026 due dates aren’t published there yet. Instalment thresholds and dates come from the CRA, and the calculators use this site’s 2026 tax data. This site has no link with any accounting firm or government body.
Frequently asked questions
What is the difference between bookkeeping and accounting?
Bookkeeping records transactions day to day. Accounting builds statements and analysis from those records.
How long should I keep tax records?
Generally six years from the end of the last tax year they relate to. For a late-filed return it is six years from the filing date.
When was the 2025 deadline for self-employed people?
Filing was due June 15, 2026, but any balance owing was due April 30, 2026.
How much does an accountant cost?
We found no official fee source, so we do not quote one. Ask several firms what is included.
Do I need instalments?
Instalments apply when you expect to owe more than $3,000, or $1,800 in Quebec. Due dates are March 15, June 15, September 15 and December 15.
- Self-employed taxes in Canada: income, CPP and GST
How tax works when you are self-employed in Canada: reporting income and expenses, paying both halves of CPP, instalments and when to register for GST
Information only. This page is general information, not tax, legal or accounting advice. Tax-Services.ca is an independent publisher: we don't prepare or file tax returns or offer tax services, and we have no connection with the CRA, Revenu Québec, any government or any company named on this page. Check the figures that matter with an official source or a qualified professional.