There is no fixed deadline in Ontario law for signing a prenup, the Family Law Act (FLA) allows spouses to sign one before, on, or even after the wedding. Timing, however, affects how likely the agreement is to hold up if is ever challenged.

A quick and affordable option to create a Prenup Agreement is to use Legal Line’s prenup drafting template.

Signing before the wedding

Ontario courts have scrutinized agreements signed at the last minute, such as the night before or the morning of the wedding, because rushed timing can support an argument that a party did not understand the agreement or felt pressured into signing it. Many family lawyers recommend starting the process at a few months before the wedding date, to leave time for financial disclosure, drafting, and independent legal advice for each party.

Signing after the wedding – a “Postnuptial” Agreement

An agreement signed after the marriage, sometimes described informally as a “postnuptial agreement” is still a legal a marriage contract under the FLA. The same formal requirements and the same grounds for setting the agreement aside apply regardless of when it is signed.

What might help decide when you should sign an agreement?

• Entering the marriage with significant pre-existing assets, such as a business, real estate, or an inheritance.
• A second or later marriage, particularly where children from a prior relationship are involved.
• A significant income or wealth difference between the two spouses.

Once a couple has made major joint purchases or had a child, negotiating financial terms can become more complicated. Addressing these questions early generally leads to calmer negotiations and a more defensible agreement.

Getting the advice and help you need

Before you say “I do,” protect your future. Contact Prenup.ca for clear, enforceable marriage contracts that safeguard your assets and reduce conflict if things change. Speak with an experienced Ontario family lawyer today at 1-800-837-0460 .

Get your Prenup Agreement

Everyone should consider having a prenup to establish clear expectations, address important financial matters, and help prevent conflicts in the future.

The easiest, fastest, and most affordable way to create a prenuptial agreement in Canada is to use Legal Line’s prenuptial agreement template.

								
You now have 3 options:
								

									
More answers about Family Law
									
Master List: 2,500 Legal Answers
																													
																		
Government Links