Why Mums Should Care About Family Agreements
Being a mum means balancing a lot — raising children, managing finances, and making decisions that affect your family’s future. One of the most important steps you can take to protect yourself and your kids understands your legal rights when it comes to family agreements.
Ontario’s Family Law Act and Divorce Act set out clear rules for property division, child support, and spousal support. But waiting until a dispute happens can be stressful and costly. Family agreements — such as separation agreements, cohabitation agreements, prenuptial agreements, and marriage contracts — allow you to make those decisions ahead of time, on your own terms.
For mums, this isn’t just about paperwork. It’s about stability and security. Having a well-written agreement ensures your children’s routines are protected, your financial contributions are recognized, and your future is not left in the hands of a judge who doesn’t know your family.
Separation Agreements – Protecting Your Children and Finances
If you’re a mum going through a separation, a separation agreement is one of the most powerful tools you have. In Ontario, separation agreements are enforceable as long as they meet the requirements of the Family Law Act, are signed by both parties, and witnessed. Mums often use separation agreements to:
- Create a parenting schedule that works for the children’s school and activities.
- Secure child support that follows the Federal Child Support Guidelines.
- Clarify property division so there are no surprises later.
It’s recommended that each parent receive independent legal advice (ILA) before signing. If legal fees are a concern, Ontario mums can explore family mediation services such as those offered by OAFM-accredited mediators or local Family Court-connected mediation programs. Mediation is often more affordable and less adversarial than going to court, making it easier for children to adjust to the changes in family life.
Cohabitation Agreements – Security for Common-Law Mums
Many mums in Ontario are in common-law relationships, where you live with your partner but are not legally married. It’s important to know that under Ontario law, common-law partners do not have the same property rights as married spouses. This means if the relationship ends, you may not have an automatic claim to the home, even if you contributed to household expenses or raised children there.
A cohabitation agreement can protect your financial security and outline a plan for parenting arrangements if the relationship breaks down. For mums, this agreement can:
- Define each partner’s financial contributions during the relationship.
- Clarify who will stay in the home if the relationship ends.
- Set out parenting schedules and child support expectations to avoid conflict.
Legal resources like Community Legal Education Ontario (CLEO) offer helpful guides on common-law rights, and OAFM-accredited mediators can help you and your partner create a cohabitation agreement that reflects your unique family needs. Investing in one now can prevent expensive disputes later — and give you peace of mind that your children’s stability comes first.
Prenuptial Agreements – Planning Ahead Before Marriage
If you are a mum preparing for marriage — perhaps after a divorce or when blending families — a prenuptial agreement (or “prenup”) is worth considering. In Ontario, prenups fall under the category of marriage contracts and are governed by the Family Law Act.
Prenuptial agreements are not about mistrust; they are about clarity and planning. For mums, a prenup can be especially valuable to:
- Protect property or inheritance you want to pass on to your children.
- Shield your business or investments from being divided if the marriage ends.
- Clarify responsibilities for debts brought into the marriage.
Because prenups must be fair and in line with Ontario law, it’s essential to get independent legal advice before signing. This ensures the contract will hold up in court if challenged. If cost is a concern, many Ontario lawyers offer flat-fee packages for marriage contracts, and legal clinics can provide guidance for those who qualify for financial assistance.
Marriage Contracts – Updating Agreements After Marriage
Life changes after you get married — you might buy a new home, have more children, or start a business. A marriage contract (sometimes called a postnuptial agreement) allows you to update your legal arrangements to reflect these changes.
For Ontario mums, a marriage contract can:
- Protect a home you purchased before marriage or property you inherited.
- Clarify how family debts and assets will be divided if the marriage ends.
- Secure financial arrangements that prioritise the children’s needs.
Marriage contracts are legally binding under Ontario’s Family Law Act, but like prenups, they must be signed voluntarily, with full financial disclosure and independent legal advice for both parties. Taking the time to update or create a marriage contract can reduce stress later — especially if you are balancing parenting and financial responsibilities.
Choosing the Right Agreement – a Mum’s Checklist
With so many options, it can feel overwhelming to know which agreement is right for you. Here’s a simple checklist for Ontario mums:
- Cohabitation Agreement: If you’re living with a partner but not married, and you want to protect property or set out parenting expectations.
- Prenuptial Agreement: If you’re getting married and want clarity on property, debts, or inheritance rights.
- Marriage Contract: If you’re already married and want to update or create an agreement for new circumstances.
- Separation Agreement: If your relationship has ended and you need to formalise parenting, support, and property division.
When in doubt, speak with a family lawyer or OAFM-accredited mediator. Many Ontario mediators offer free 15-minute consultations to help you understand your options before making a decision.






