One timing rule in the tax annex of Budget 2026 is worth more to a 20-person Canadian firm than anything in its AI chapter. New SR&ED support for patent and software copyright costs starts only in a tax year that begins on or after November 5, 2026. The Budget 2026 AI money a small firm can use sits in two tax lines, and that is where we would spend the reading time.
The AI chapter has big numbers, and most of them belong to someone else: AI companies that need compute, a Montreal research centre, and a program that was already announced in June. Below is our ranking of every AI-related line by how likely a business your size can claim it, with the math on the two that pay.
Key points
Which Budget 2026 AI measures can a 20-person firm actually use?
Two tax measures and three smaller supports. The Productivity Mega Deduction lets a business write off eligible computers and software in the year it buys them. An SR&ED change adds patent and software copyright costs to the claim. Mitacs placements, free AI training through Amii and a Mila and Mozilla open-source effort follow, in that order.
We put the deduction first because almost every firm buys laptops. The SR&ED change is worth more per dollar, but only to firms that build their own software or models. If you are choosing between the training and the placement, our earlier piece on what a Mitacs AI placement really costs in supervision and our ranking of federal AI training routes by start date still hold.
What does the Mega Deduction do to a $49,000 AI hardware bill?
It moves the whole deduction into the year you buy. Finance says the measure now covers more than 65% of business assets, up from roughly 15%, and names software and computer equipment. On our illustrative numbers, a firm spending $49,000 on AI-ready machines deducts all $49,000 at once, worth $5,390 in tax at an illustrative 11% rate.
Labelled illustration: a 20-person survey firm in Red Deer replaces 18 laptops at $2,200 each ($39,600) and adds one $9,400 workstation to run models locally. Total: $49,000.
Two things keep this honest. It is a deduction, so the gain is timing and cash flow. The laptops cost the same. And the measure is still a proposal. The budget says the Canada Revenue Agency will rule on which assets qualify once legislation is tabled, and it excludes very long-lived assets, regulated-rate assets and anything with significant personal use. A laptop that goes home every weekend is the kind of item to ask your accountant about.
When does the SR&ED change for patents and software copyright start?
At the start of your first tax year that begins on or after Budget Day, November 5, 2026. A firm with a calendar year gets it on January 1, 2027. A firm whose year started October 1, 2026 waits until October 1, 2027. Filing fees paid in between earn nothing extra under this change.
The change lets costs to register and maintain patents and copyrighted software count as SR&ED spending, as long as the work came out of a project that already qualifies. Fees paid to foreign IP offices count. Preparation work counts only if it is done in Canada. Lawsuits to enforce a patent do not count, and selling the IP later claws the support back.
Labelled illustration: two Saskatoon software firms each spend $14,000 registering a patent and a software copyright for a model they built. At the 35% enhanced rate some smaller corporations earn, that is $4,900 of credit. The firm on a calendar year that files in February 2027 can claim it. The firm with an October year start that files the same month cannot, unless it waits until October.
That gap is the awkward number in this budget for builders. If you planned to file in the next eleven months, look at your year-end before you send the application.
What in the AI chapter is not for a 20-person firm?
Most of it. The 500 MW of sovereign compute uses backstops and offtake agreements for Canadian AI companies. The Cohere stake is up to $1.6 billion. The new $6.2 million goes to a Montreal centre supporting the Global Partnership on AI. None of these sends money to a firm buying AI.
Two more are easy to misread. The Strategic Response Fund gets $1 billion over six years, but it starts in 2028-29 and targets large-scale projects. The $100 million with the Federation of Canadian Municipalities over three years from 2027-28 is for city e-permitting and AI. If you sell software to municipalities, that one is a market rather than a grant. The same goes for the $2,038 million AI for All row, which the budget itself footnotes as a June announcement. If you missed it in June, our breakdown of why most AI funding in Canada arrives as a loan is the better guide to that pool.
Is the AI chapter really that thin for a small firm?
For a firm with no hardware budget, the chapter matters more than the tax lines. A deduction is worth nothing to a business with no taxable profit this year, and a credit on patent fees helps only firms that patent. Free Amii training and a co-funded Mitacs placement can do more for a profitable-but-small services firm than either tax change.
We still rank the tax lines first, because they apply without an application, a cohort or a selection panel. The training and placement routes depend on intake windows, like the Chamber AI Adoption Program’s limited hands-on cohorts. Our ranking would change if draft legislation narrows the software and computer categories, or moves the SR&ED start rule. Both are worth checking when the bill appears. For more on how Ottawa’s AI rules land on business, browse the rest of our AI Policy in Canada reporting.
FAQ
Is there new AI money for small businesses in Budget 2026?
Very little that is new. The $2,038 million AI for All row is footnoted as announced on June 4, 2026, and the new AI line is $6.2 million for the Global Partnership on AI. The more useful items for a small firm are the Productivity Mega Deduction and an SR&ED change.
Can I write off AI laptops and software under Budget 2026?
Likely, if they qualify. The proposed Productivity Mega Deduction covers eligible assets bought on or after September 15, 2026, and Finance names software and computer equipment. The CRA will rule on specific assets once legislation is tabled, and items with significant personal use are excluded.
When does the SR&ED patent and copyright change apply?
It applies to tax years that begin on or after November 5, 2026. A calendar-year firm gets it from January 1, 2027. A firm whose year began on October 1, 2026 waits until October 1, 2027. The IP must come from a project that already qualifies for SR&ED.
Does the 500 MW of sovereign AI compute help a small firm?
Only indirectly. The budget aims those backstops and offtake agreements at Canadian AI companies that need computing capacity. A business buying AI tools rather than training models will not apply for it. See our note on Alberta’s data centre levy for where that capacity may land.
Before you buy hardware or file an IP application this winter, write one date on the plan: the day your next tax year begins. On the SR&ED change, that date decides whether Budget 2026 pays you anything at all.
Checked on November 5, 2026 against Budget 2026 chapter 5, chapter 1 and the tax measures annex. The tax measures are proposals until passed. This is not tax advice.
