If you have been hearing about tax changes targeting corporate groups, this is one worth paying attention to. Budget 2025 introduced proposed rules that could suspend a tax refund your corporation would otherwise expect to receive — not because your structure was designed for tax deferral, but in many cases simply because your corporate year-ends do not play nicely together. Draft legislative proposals and explanatory notes were released by the Department of Finance in early 2026, and the final form remains uncertain. But for affected structures, this is worth understanding now.
When your corporation earns investment income — interest, rent, or portfolio dividends — it pays a relatively high rate of corporate tax. That is by design. The system is meant to prevent corporations from becoming permanent parking lots for investment income. The good news is that some of that tax is refundable. It sits in a notional account and comes back to the corporation — roughly $38 for every $100 of taxable dividends paid — when the corporation pays dividends to its shareholders. Once the money works its way out and personal tax is paid, the corporation gets its refund. That is the integration idea in a nutshell: tax gets paid once, at roughly the right rate, without giving corporations an indefinite timing advantage.
The complication starts when there is more than one corporation in the structure. Take a simple example. Opco, with a December 31 year-end, is owned by Holdco, with an October 31 year-end. Opco earns investment income and builds up a refundable tax balance. In December 2025, Opco pays a dividend to Holdco and claims its refund. But Holdco’s corresponding tax liability on that dividend does not arise until Holdco’s taxation year ending October 31, 2026. So the government is refunding tax in early 2026 while not collecting the related tax from the next corporation in the chain until early 2027. In a multi-tier structure with deliberately staggered year-ends, that gap can be repeated and stretched. That is the timing mismatch Budget 2025 is targeting, and the policy concern is understandable.
Under the proposed rules, Opco’s refund would be suspended in that situation — held back until the dividend moves further out of the corporate group to an individual shareholder. No more getting the cash back early just because your year-ends happen to fall in a convenient sequence.
Here is where the proposal starts to feel less elegant. The proposed rules do not ask whether the timing mismatch was created deliberately. They ask a much more mechanical question: does the recipient corporation’s tax payment deadline fall after the payer’s? If yes, the refund may be suspended.
This can catch structures that have nothing to do with aggressive tax planning. Year-ends are often chosen at incorporation for practical reasons and may never have been revisited. Acquisitions of control, amalgamations, and other corporate changes can introduce mismatches no one intended. And even two corporations with the same fiscal year-end can have different tax payment deadlines depending on their tax status and the type of income they earn. That is why tax professionals have been pushing back. The concern is not just the policy goal. It is that the current draft appears broad enough to catch many ordinary private-company structures that were never designed to create a timing advantage in the first place..
And then, naturally, the plot thickens. Many private-company structures include a family trust for perfectly legitimate reasons: estate planning, succession planning, and flexibility in ownership. But where a trust sits between Opco and Holdco, the timing issue can become even more awkward.
Family trusts almost always have a December 31 year-end — fixed by tax law, not by choice. When a dividend flows from Opco through the trust to Holdco, the tax rules treat Holdco as having received that dividend on December 31 for tax purposes, regardless of when it was actually paid. That can push the dividend into Holdco’s next fiscal year even where Opco and Holdco otherwise appear aligned.
Here is the part that surprises many people: simply matching Opco and Holdco year-ends may not solve the problem if a trust is in the middle. In many trust-based structures, December 31 may be the only shared year-end that avoids this lag — because it is the only one where the trust’s fixed year-end falls within the same fiscal year of the corporate beneficiary rather than the next one. Any other shared year-end still leaves December 31 landing in Holdco’s following year.
So if your structure includes a trust and your corporations do not have December 31 year-ends, this is worth a closer look. This is not exotic planning. It is a very normal setup that may now come with a timing headache attached.
No one needs to panic, and no one needs to torch their structure. Holding companies and family trusts remain legitimate and useful tools. But this is a good time to ask the right questions.
It is also worth keeping this in perspective. These rules matter most where a corporation has passive investment income and an accumulated refundable tax balance. If that is not the case in your structure, the direct impact may be more limited — although trust timing issues may still be worth reviewing regardless.
Here are the questions to bring to your advisor:
- Do your Opco and Holdco have different fiscal year-ends? If so, which tax payment deadline falls first?
- Is there a family trust in the structure? If yes, how are dividends flowing through it, and does the trust create a timing mismatch?
- Has the structure gone through an acquisition, amalgamation, or ownership change? If so, did that affect the year-end picture?
- Are you planning a sale or reorganization? If a trust is involved, dividend timing may need attention well before closing.
- Do you have significant refundable tax balances? If so, understand how those balances could be affected if the proposed rules are enacted.
Our view is that the policy concern is understandable, but the current draft appears broader than it needs to be. It adds another layer of complexity to an already difficult area and may catch many ordinary private-company structures that were never designed to create a timing advantage in the first place.
Finance has heard these concerns from the professional tax community, and the final rules may yet be refined. In the meantime, if your structure includes staggered year-ends, a family trust, or significant refundable tax balances, this is worth reviewing before your next dividend cycle — and certainly before any transaction.
If any of this sounds like it could apply to your situation, reach out. We are here to help, call us for a consultation.
This article is based on draft legislative proposals released by the Department of Finance in early 2026, including explanatory notes. The measure remains proposed and could be refined before enactment.