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To future-proof accounting in Canada, plan for two things you can count on: rates will change, and your records must stay readable for six years. Everything else is judgement. In 2026 alone, Nova Scotia, Newfoundland and Labrador, Prince Edward Island and Ontario all moved a rate or limit that a stale spreadsheet would still show wrong.
Will your records still open in six years?
That’s the first test, and it’s more practical than it sounds. The CRA says electronic records have to be kept in an electronically readable form for the whole retention period, even when you also have a paper copy. Its retention rule is six years from the end of the last tax year a record relates to, and the keeping records page is where the details live.
So ask a dull question of every tool you use. If this subscription ended tomorrow, could you export the ledger, the payroll history and the sales data in a format you can open without the vendor? If the answer is no, fix that before you fix anything clever.
The CRA also encourages a backup at a different location within Canada, and it expects records kept at your Canadian home or business unless it agrees otherwise. Put the export on a schedule. Once a year, after the return is filed, is enough for most small businesses.
Which rates should never be typed into a formula?
All of them. Tax rates, limits and thresholds move, and a spreadsheet with 13% hard-coded in forty cells is the classic trap. Here are the ones a small business meets most often.
| Item | Figure we confirmed |
|---|---|
| Federal small business rate | 9% on the first $500,000 of active business income |
| Federal general corporate rate | 15% |
| HST, Ontario | 13% |
| HST, New Brunswick, Newfoundland and Labrador, PEI | 15% |
| HST, Nova Scotia | 14%, down from 15% on 1 April 2025 |
| GST only (Alberta, Yukon, Northwest Territories, Nunavut) | 5% |
Nova Scotia shows why this matters. A system set up before April 2025 was charging the wrong tax unless somebody changed it. Ontario is the next example. The 2026 Ontario budget annex says the small business rate would fall from 3.2% to 2.2% from July 1, 2026, prorated for tax years that straddle that date. We did not confirm that the bill has passed. A corporation with a calendar year end straddles the change, and by days the blend is about 2.7%, which is our own arithmetic and not a published figure. Atlantic provinces moved too: the CRA’s corporation tax rates page shows Newfoundland and Labrador at 2% from January 1, 2026 and Prince Edward Island with a $600,000 limit from July 1, 2025. See small business tax rates in Canada for the full list.
What does a stale rate cost in dollars?
Take a Halifax shop with $10,000 of taxable sales in a month. At the old 15% rate, the system collects $1,500 of HST. At the correct 14%, the tax is $1,400. That’s $100 too much from customers on a single month’s sales, and it’s the shop’s job to fix it. Flip it around in a province where a rate goes up, and the shop is under-collecting while the tax it owes still has to be paid out of its own pocket.
A rates table with a date column fixes this. Update one cell, and every formula that reads it follows.
What does future-proof accounting mean for payroll?
It grows faster than you’d guess, because the employer adds CPP and EI on top of pay. With the payroll remittance calculator, ten employees in Ontario each paid $2,500 every two weeks mean $7,533.38 to remit to the CRA each pay period. The full cost of that payroll is $26,977.90 per period, against $25,000 in gross pay.
The calculator leaves out workers compensation and other levies, so your real figure is higher. Still, the point stands. Model the next hire before you make the offer, and keep a cash cushion for the remittance date.
What should a small business do this year?
A short list beats a strategy document, and most of it is a ballpark afternoon’s work.
- Export your books and payroll history once and open the files to check they work.
- Keep every rate in one settings table, with the date you checked it.
- If you run a corporation, file the T2 electronically. It’s required for tax years starting after 2023, and the CRA charges $1,000 when a required return isn’t filed that way.
- Run the tax instalments calculator after a good quarter, before the bill arrives.
No 2026 filing deadlines are listed here because none had been published when I looked, so read the CRA page for your return before you rely on a date.
Where did we check this?
In November 2026 we read the CRA corporation tax rates page (last modified October 21, 2026) and the Ontario budget annex for the Ontario small business rate. The small business limit, the sales tax rates and the T2 rule come from CRA pages we read earlier, and the Ontario rate of 2.2% from July 1, 2026 is listed on the CRA corporation tax rates page. Record rules are from CRA guide RC188 and its electronic records guidance, covered in our pages on record keeping requirements and digital transformation in accounting. To hear about changes as they happen, see how to stay updated with accounting changes. We are an independent site, and no government body is behind it.
Frequently asked questions
How long should I keep accounting records in Canada?
Six years from the end of the last tax year a record relates to, unless the CRA has agreed to earlier destruction. Some records, such as share registers, are kept longer. Electronic records must stay readable for the whole period, so test that you can still open your exports before the subscription that made them ends.
Do electronic records need to stay readable?
Yes. The CRA says electronic records must be kept in an electronically readable form for the retention period, even if a paper copy exists. Ask whether you could export the ledger, payroll history and sales data without the vendor if the subscription ended tomorrow, and fix that gap first.
Where should backups be kept?
The CRA encourages a backup at another location in Canada, in case of fire, flood, theft or other loss, and expects records at your Canadian home or business unless it agrees otherwise. A yearly export after the return is filed, saved in two places, is enough for most small businesses.
Which tax rates changed recently?
Nova Scotia HST fell to 14% on April 1, 2025. The CRA shows Newfoundland and Labrador’s small business rate at 2% from January 1, 2026 and Prince Edward Island’s limit at $600,000 from July 1, 2025. Ontario cut its small business rate from 3.2% to 2.2% from July 1, 2026, as the CRA corporation tax rates page shows. Keep every rate in one dated table.
Must a corporation file its T2 online?
For tax years starting after 2023 it must, apart from listed exceptions such as insurance corporations and non-residents. A required return filed another way brings a $1,000 CRA penalty. Run the tax instalments calculator after a good quarter so the bill does not surprise you.
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