Getting married changes your RDSP math: what couples miss

Getting engaged is a joyful, busy, slightly chaotic season. You are picking dates, arguing happily about food, and trying to keep everyone informed. Almost nobody, in the middle of all that, asks what the wedding will do to a Registered Disability Savings Plan. I get it. It is not romantic. But if you or your partner has an RDSP, it is one of the most practical questions you can ask, because marriage changes the math behind its grants and bonds.

Your RDSP is personal, but the income test is not

Here is the fact that catches couples off guard. The Canada Disability Savings Grant and the Canada Disability Savings Bond are not based only on the beneficiary's income. They are based on family income. While a beneficiary is single, that usually means their own income. Once there is a spouse or common-law partner in the picture, family income means both incomes combined.

That makes sense from the government's point of view. The extra help is meant to flow most generously to households with lower incomes. But it can still surprise you. A couple can move from one tax year to the next and see a smaller grant land in the account, with no change in how much was contributed. Nothing went wrong. The household simply got measured as a household.

Weddings, moving in, and that 12 month mark

Marriage is the obvious turning point, but it is not the only one. For tax purposes, two people are generally considered common-law partners after living together in a conjugal relationship for 12 continuous months. Other situations, such as having a child together, can create common-law status sooner, but that 12 month mark is the one most couples drift past unnoticed.

The RDSP does not wait for a wedding photo. Once you are spouses or common-law partners for tax purposes, the combined income test applies. So a couple who moved in together last spring may already be on the new math well before any ceremony. If you are sorting out the basics together, my guide to an RDSP for a spouse walks through how couples fit into these accounts.

How a smaller match actually looks

Let me put some numbers to it. For 2026, the top matching tier applies at family income of $117,045 or less. At that level, the grant can match 300 percent on the first $500 contributed each year and 200 percent on the next $1,000. That is up to $3,500 in grant money in a year on a $1,500 contribution, subject to lifetime limits and any carry forward room built up over time.

Above that income line, the matching does not disappear. It steps down to 100 percent, matching dollar for dollar on the first $1,000 contributed, for up to $1,000 in grant in a year. That is still real money, just less than the $3,500 the same contribution could have attracted at the higher tier. The bond works differently again. It is paid to lower income beneficiaries without any contribution at all, and combined family income can reduce it or end entitlement altogether.

It is not just the RDSP

The RDSP is where I see this most often, but it is part of a bigger pattern. Many Canadian disability supports are calculated at the household level once you have a partner. The Canada Disability Benefit is one example. It is also calculated on family income, with a couple threshold of $32,500 used in its calculation. Two incomes together can change the amount, even when each income on its own looks modest.

There is a helpful side to the household picture, too. If a beneficiary cannot use all of their Disability Tax Credit amount, the unused portion can generally be transferred to a spouse or common-law partner. For some couples, that puts a valuable credit to work instead of leaving part of it unused. Some doors narrow, and others open. My overview of the Canada Disability Benefit explains more about how that benefit is calculated.

Please do not call this a reason not to marry

I want to say this part warmly and clearly, because I have heard the worry out loud. None of this is a reason not to marry the person you love. None of it is a reason to put a life you want on hold. The talk online about a so-called marriage penalty can make this sound far scarier than it is. In most households, the full picture includes two incomes, shared costs, new tax opportunities like that credit transfer, and a partner who is now part of the long term plan in every sense. That is not a penalty. That is a life getting bigger.

What this is, simply, is a reason to run the numbers as a household before the numbers surprise you. Look at your combined income together and understand which tier you are likely to be in. Pay attention to timing, because grant and bond amounts look back at income from earlier tax years, and carry forward room from past years does not vanish just because your status changed.

This article is education only, in plain language, so couples can have a better conversation together. It is not financial advice for your specific situation, and it comes with no guarantees about amounts or eligibility, because every household and tax return is different. Rules and thresholds also change over time, so checking the current figures matters.

Marriage is about building a life together, and money is honestly just one part of how you care for each other inside that life. If an RDSP is part of your story, bring it into the wedding planning alongside everything else you value. Run the household numbers, ask good questions early, and then get back to the good stuff: celebrating the person you chose, and the future you are building together. That future is absolutely worth planning for, together.

For the full picture in one place, visit the Disability Finance hub.

Related guides: opening an RDSP for your spouse and who can hold an RDSP.