Canada: Budget 2026 moves the tax filing deadline to May 15 and adds a $15 million capital gains exemption

On 5 November 2026, Finance Minister François-Philippe Champagne tabled Canada's federal Budget 2026, titled "Masters of Our Destiny". General personal and corporate income tax rates stay where they are; what changes are the dates, thresholds and exemptions that shape how Canadians file and pay tax. The two with firm dates are a single May 15 filing deadline from the 2027 tax year and a new $15 million capital gains exemption from Budget Day. These are proposals, and many need legislation before they become law, so the final details or dates may still change.

What happened

The change most people will notice is the deadline. From the 2027 taxation year, every individual would file and pay by May 15, with the first deadline falling on 15 May 2028. Today most people file and pay by April 30, while self-employed people and their spouses or common-law partners can file by June 15, though their payment is still due April 30. The budget estimates the single date would save Canadians about $230 million in interest and penalty payments over five years.

Alongside it comes the Canada Growth Incentive, a capital gains exemption worth up to $15 million per person per business, covering qualifying shares issued on or after Budget Day and before 2037 and held at least 36 months before sale. The shares must be in a Canadian-controlled private corporation running a qualifying active business primarily in Canada, with combined assets under $100 million at issuance, and professional practices, consulting and sectors such as agriculture, mining, financial services, real estate and food and accommodation are excluded. Sheltered gains would still count at a 30 per cent inclusion rate for alternative minimum tax, and claiming the incentive would limit the lifetime capital gains exemption on shares of the same company.

What else changes

The instalment threshold would rise from $3,000 to $7,500 for individuals outside Quebec and for corporations, and from $1,800 to $4,500 for individuals in Quebec, indexed to inflation, for taxation years starting on or after 1 January 2028. Nearly 1.1 million individuals and 185,000 small incorporated businesses would stop paying tax in instalments altogether, the budget says. People whose main income comes from a business could also pay one annual instalment of two thirds of their net tax owing by 31 December, instead of quarterly.

Form T1135, the Foreign Income Verification Statement, would only be needed above $200,000 of specified foreign property at cost, up from $100,000, with simplified reporting up to $500,000 instead of $250,000. Both changes would apply to taxation years or fiscal periods ending after 2026, and about a third of current filers would no longer have to file.

Taxpayers would also have longer to dispute an assessment: one year from the date the Canada Revenue Agency sends a notice of assessment, up from 90 days today, or for individuals and graduated rate estates, the later of that date and two years from their tax return filing due date. The separate application to extend the objection deadline would be removed.

For businesses, the budget confirms the Productivity Mega Deduction announced in September 2026: immediate expensing for a broader range of depreciable property generally acquired on or after 15 September 2026. The small business rollover would also be expanded, with the period to buy replacement shares running to the year of disposition plus the following three calendar years, for dispositions on or after 1 January 2027.

Low and modest income workers see their benefit reshaped: the Advance Canada Workers Benefit falls from 50 per cent to 25 per cent of the 2026 entitlement for the 2027 taxation year, then ends from 2028. The savings partly fund the enhanced benefit, renamed the Build Canada Workers Benefit, with a 2027 maximum of $1,859 for single people without children and $3,143 for families, and the phase-in threshold down to $500.

What is only a consultation

One item is not a measure at all yet: corporate loss transfers, which would let current-year non-capital losses move within a qualifying wholly owned corporate group, are out for consultation only, with submissions open until 8 January 2027 and no commencement date set.

The fiscal picture

The budget projects a deficit of $62.3 billion in 2026-27, falling gradually to $52.9 billion in 2030-31, with day-to-day operating spending balanced against revenue by 2027-28.

What it means in general terms

For most people, the practical change is the calendar: one date, May 15, replaces the split between April 30 and June 15, and the payment date moves with the filing date. The higher instalment and T1135 thresholds mean fewer people pay tax in instalments or report foreign property. None of this changes how much tax anyone owes: the rates are untouched, and the $15 million exemption applies only to shares issued from Budget Day onward. Until Parliament passes the legislation, the current rules still apply, and the April 30 and June 15 deadlines stand for the 2026 tax year.