GoodTerms

Ontario Prenup and Marriage Contract Guide

Last reviewed: August 16, 2026

Learn the Ontario rules that matter, gather the right financial details, and create a personalized PDF and Word working draft for separate lawyer review.

Quick Answer

Ontario calls a prenup a marriage contract. It must be in writing, signed by both partners, and witnessed. Complete financial disclosure and separate legal advice help protect the process.

Four Ontario Rules That Matter

Get the process right before anyone debates clause wording. Under section 56 of the Family Law Act, a court may set aside a domestic contract where significant assets or debts were not disclosed, a party did not understand the contract, or ordinary contract-law concerns apply.

Use a written, witnessed agreement

Ontario domestic contracts are unenforceable unless they are made in writing, signed by the parties, and witnessed.

Disclose significant assets and debts

Both partners should exchange clear schedules of assets, liabilities, income, business interests, pensions, and real estate before signing.

Do not ignore the matrimonial home

A marriage contract cannot limit a spouse's rights under Part II of the Family Law Act concerning the matrimonial home.

Leave time for independent legal advice

Separate advice helps each partner understand the agreement and reduces later arguments about pressure, fairness, or misunderstanding.

Prepare a Better First Draft

Focus on the decisions and records that make separate review more useful.

Property and the matrimonial home

Record ownership, down payments, mortgage contributions, and any home that may become the matrimonial home.

Assets, debts, and future growth

List current values and decide how investments, pensions, loans, tax debt, and future growth should be treated.

Businesses, inheritances, and family money

Identify ownership, valuation questions, gifts, trusts, parent loans, and expected inheritances.

Spousal support

Discuss income gaps, career sacrifices, children, disability, and whether support should change after major life events.

Bring These Details

Legal names and dates of birth for both partners

Income, asset, and debt schedules with current values

Business, pension, stock-option, or professional-practice records

Real estate title, mortgage, down-payment, and renovation details

Inheritance, gift, trust, and family-loan information

Open decisions and time for each partner to obtain separate advice

Ontario FAQ

How do you get a prenup in Ontario?

Start early, exchange complete financial information, agree on the main decisions, prepare a written draft, and have each partner review it with a separate Ontario family lawyer. Complete any revisions before signing with a witness.

Can an Ontario prenup protect a house owned before marriage?

A marriage contract can address ownership and division, but Ontario has special matrimonial home rules. Any clause involving a home that may become the matrimonial home needs Ontario-specific legal review.

Can I download an Ontario prenuptial agreement as a PDF or Word file?

Yes. GoodTerms creates a personalized working draft that you can download as a PDF or editable Word document for separate lawyer review. It is not a blank one-size-fits-all form or a substitute for legal advice.

Is a GoodTerms template legally binding by itself?

No. It is a starting draft for lawyer review. The final Ontario marriage contract must meet legal requirements and should be reviewed by independent lawyers before signing.

Official Sources

Related Canadian Prenup Guides

Read the companion guides on enforceability, cost, inheritance, property, and preparing for lawyer review.

Canadian prenup checklist

Organize the timeline, disclosure documents, decisions, and lawyer-review questions before drafting.

Start with a clear working draft.

Create your Ontario template, then review it with separate legal counsel before signing.

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