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Find a Lawyer » Canada Legal Guides » Ontario Legal Guides » Family Law & Divorce Ontario » Marriage Contracts & Prenups Ontario » Protecting an RESP for a Child from a Previous Relationship in an Ontario Prenup

Protecting an RESP for a Child from a Previous Relationship in an Ontario Prenup

27 Jun 2026 4 min read No comments Marriage Contracts & Prenups Ontario
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Under Ontario family law, a Registered Education Savings Plan (RESP) is generally considered the property of the subscriber, meaning your new spouse could legally claim half its value in a divorce. Excluding it explicitly in a marriage contract protects your stepchild’s education funds, with legal drafting costing around $2,000 to $4,000 CAD.

Navigating finances in a blended family is notoriously complicated. When you remarry, your primary goal is often ensuring that the wealth you built previously is preserved for your biological children. Many parents in Ontario diligently contribute to a Registered Education Savings Plan (RESP) for years, assuming this money legally belongs to the child. This is a massive legal misconception that can lead to devastating consequences during a divorce.

In Canada, the child (beneficiary) does not own the RESP. The parent who opened the account (the subscriber) owns the funds. 📋 If you enter a new marriage in Ontario without a domestic contract, the value of that RESP is folded into your Net Family Property (NFP). If the relationship breaks down, your new spouse might be legally entitled to half of your child’s tuition money. Explicitly excluding the RESP in a marriage contract is the only guaranteed way to protect those education funds.

Step-by-Step Process in Ontario

Protecting an RESP from the equalization process requires highly specific legal drafting. Whether you live in Hamilton, Toronto, or London, a family lawyer will guide you through these crucial steps to insulate your child’s future.

Step 1: Valuing the RESP on the Date of Marriage

Before you get married, you must obtain official bank statements proving the exact balance of the RESP. 📖 In Ontario, you are generally allowed to deduct the pre-marriage value of assets from your net worth upon separation. However, any growth in the RESP’s value during the marriage, and any new contributions, are normally split 50/50 unless a contract says otherwise.

Step 2: Drafting the Complete Exclusion Clause

Your family lawyer will draft a specific clause in your marriage contract entirely excluding the RESP from your Net Family Property calculations. This means the original balance, any government Canada Education Savings Grants (CESG), all future investment growth, and all future contributions will be legally untouchable by your new spouse.

Step 3: Handling Future Contributions

The contract must clearly dictate what happens when you continue contributing to the RESP during the new marriage. 💰 Will you use joint household funds, or only your sole income? If joint funds are used, your new spouse might claim an “unjust enrichment” right to the account later. The contract should mandate that only your separate funds will fund the child’s RESP.

Step 4: Naming a Successor Subscriber

If you pass away unexpectedly, what happens to the RESP? Your marriage contract and your Last Will and Testament must align. You should explicitly name a “successor subscriber” (such as your child’s other biological parent or a trusted sibling) to take over the RESP, rather than having it fall into your general estate where your new spouse could inherit it.

Step 5: Full Financial Disclosure

To make the prenup legally watertight, both you and your new partner must exchange full financial disclosure. 🔍 You will provide Form 13.1, officially declaring the RESP as an asset, while your partner declares all of their own assets and debts. Transparency prevents the contract from being overturned in the future.

Step 6: Executing with Independent Legal Advice (ILA)

Your new spouse must review the contract with their own independent family lawyer. ⚔️ Their lawyer will explain that by signing the contract, they are forever waiving their statutory right to claim a portion of the RESP’s value. Both lawyers sign a Certificate of ILA, finalizing the agreement.

How Much Does it Cost in Ontario?

Drafting a marriage contract for a blended family is a vital investment in your child’s future. 💵 Free online templates rarely cover the specific intricacies of RESP successor subscribers and NFP exclusions.

Custom Marriage Contract Drafting$2,000 – $4,000+
Independent Legal Advice (For Partner)$800 – $1,500
Updating Last Will & Testament$500 – $1,200

How Long Does the Process Take?

Protecting specific assets like an RESP through a marriage contract typically takes 4 to 6 weeks. ⏳ It involves retrieving official statements from your financial institution and allowing enough time for your new partner’s lawyer to review the exclusionary clauses without feeling rushed or pressured before the wedding.

Frequently Asked Questions (FAQ)

Does my child own the RESP?

No. A massive misconception in family law is that the beneficiary owns the account. Legally, the subscriber (the parent who opened it) owns the funds and can theoretically withdraw the money for personal use, which is why it forms part of your net family property.

What happens to the RESP if I don’t have a prenup?

Without a contract, any increase in the RESP’s value from the date of your marriage to the date of your separation is divided equally with your new spouse under Ontario’s equalization laws.

Can my new spouse be a joint subscriber?

Yes, you can add a spouse as a joint subscriber. However, if your goal is to protect the money exclusively for your biological child, doing so is highly discouraged, as it gives your new spouse direct legal control over the funds.

What if my ex-spouse is already a joint subscriber?

If you and your child’s other biological parent are joint subscribers, the RESP is generally handled by your previous separation agreement. However, your 50% interest in the account still needs to be excluded in your new marriage contract.

Can a judge override the marriage contract?

It is very rare for an Ontario judge to override an RESP exclusion clause if both parties provided full financial disclosure and received Independent Legal Advice before signing the agreement.

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