Net Family Property Calculator Ontario

Quick Answer

How is the equalization payment calculated in Ontario? Each married spouse calculates their net family property (NFP): the value of property owned on the valuation date (usually the separation date), minus debts on that date, minus the net value of property owned on the date of marriage. A negative NFP counts as zero. The spouse with the higher NFP pays the other half the difference (Family Law Act s. 5(1)). The matrimonial home is special: if it is the matrimonial home at separation, its date-of-marriage value is not deducted, even if one spouse owned it before the wedding.

Ontario Net Family Property and Equalization Estimator

Free, private and anonymous: the calculation runs in your browser. Nothing you enter is sent to Tailor Law or stored, and no cookies are used.

Spouse A

Property owned on the valuation date, other than the matrimonial home ($)Bank accounts, investments, RRSPs, pensions (family law value), vehicles, business interests, other real estate.

This spouse’s interest in the matrimonial home on the valuation date ($)Enter this spouse’s share of the home’s value. Enter the mortgage under debts.

Debts and liabilities on the valuation date ($)Mortgage, lines of credit, credit cards, loans, taxes owing.

Excluded property included above ($)For example gifts or inheritances received during the marriage from third parties and still traceable (s. 4(2)).

Property owned on the date of marriage, not counting a home that is the matrimonial home at separation ($)

Debts on the date of marriage ($)Leave out debts related directly to acquiring or significantly improving a matrimonial home.

Date-of-marriage value of a home that is now the matrimonial home (for reference only, not deducted) ($)

Spouse B

Property owned on the valuation date, other than the matrimonial home ($)Bank accounts, investments, RRSPs, pensions (family law value), vehicles, business interests, other real estate.

This spouse’s interest in the matrimonial home on the valuation date ($)Enter this spouse’s share of the home’s value. Enter the mortgage under debts.

Debts and liabilities on the valuation date ($)Mortgage, lines of credit, credit cards, loans, taxes owing.

Excluded property included above ($)For example gifts or inheritances received during the marriage from third parties and still traceable (s. 4(2)).

Property owned on the date of marriage, not counting a home that is the matrimonial home at separation ($)

Debts on the date of marriage ($)Leave out debts related directly to acquiring or significantly improving a matrimonial home.

Date-of-marriage value of a home that is now the matrimonial home (for reference only, not deducted) ($)

Enter your figures and select Calculate.

How the calculator works

Net family property = (property on the valuation date − excluded property − debts on the valuation date) − (property on the date of marriage, other than a matrimonial home − debts on the date of marriage).
Zero floor: if the result is below zero, NFP = 0 (s. 4(5)).
Equalization payment = (higher NFP − lower NFP) ÷ 2, paid by the spouse with the higher NFP (s. 5(1)).

Matrimonial home. The home is included at its full value on the valuation date. Its value on the date of marriage is not deducted if it is still the matrimonial home at separation, and debts related directly to acquiring or significantly improving it are not deducted at the date of marriage either.
Excluded property under s. 4(2), such as gifts or inheritances from third parties received after the marriage, is removed from the valuation-date total. It loses that protection if it was put into the matrimonial home.
Negative marriage-date net worth. If a spouse had more debts than assets on the date of marriage, the calculator adds that amount back, increasing NFP. Have a lawyer confirm this treatment for your case.

Worked example

Spouse A owns $500,000 of property on the valuation date and owes $100,000. On the date of marriage A had $50,000 of property and no debts. A’s NFP is $500,000 − $100,000 − $50,000 = $350,000.

Spouse B owns $150,000 and owes $20,000, and had $10,000 on the date of marriage. B’s NFP is $150,000 − $20,000 − $10,000 = $120,000.

The difference is $230,000, so Spouse A would pay Spouse B an equalization payment of $115,000.

Matrimonial home variation: if Spouse A had owned the house before the marriage, worth $400,000 then and $800,000 at separation, and it was the family home at separation, the full $800,000 is included and the $400,000 is not deducted.

Important caveats

Married spouses only. Equalization under the Family Law Act does not apply to common-law partners, who must rely on other claims such as unjust enrichment. See common-law separation.
Valuation is the hard part. Pensions have a special family law value, businesses and professional practices need valuation, and notional disposition costs and taxes are often deducted. The calculator uses the numbers you enter.
Unequal division. A court can award more or less than half the difference if equalizing would be unconscionable, for example after reckless depletion of property or a very short marriage (s. 5(6)).
Deadlines. Equalization claims have strict time limits under s. 7(3). Use our deadline calculator or ask a lawyer.
Learn more about property and asset division in Ontario.

Frequently Asked Questions

What is net family property in Ontario?

Net family property is the value of everything a married spouse owns on the valuation date, minus debts on that date, minus the net value of property they owned on the date of marriage (other than a matrimonial home). Certain excluded property, such as third-party gifts and inheritances received during the marriage, is left out. It cannot be less than zero.

How is the equalization payment calculated?

Each spouse calculates net family property. The spouse with the higher amount pays the other one-half of the difference, under section 5(1) of the Family Law Act. For example, with NFPs of $350,000 and $120,000, the payment is $115,000.

Is the matrimonial home deducted if I owned it before marriage?

No, not if it is still the matrimonial home at separation. The Family Law Act excludes a matrimonial home from the date-of-marriage deduction, so the owner gets no credit for its pre-marriage value. This is one of the most important and surprising rules in Ontario property division.

Can net family property be negative?

No. Section 4(5) of the Family Law Act deems a negative net family property to be zero. A spouse with more debts than assets therefore has an NFP of zero, and the other spouse’s full NFP is used to calculate the difference.

Does equalization apply to common-law couples in Ontario?

No. Equalization of net family property under the Family Law Act applies only to married spouses. Common-law partners may have property claims based on trust or unjust enrichment principles, which are decided differently.

Sources

Related calculators

Legal review: Reviewed by Deepa Tailor, Founder & Managing Director · September 2026. Calculator version: 2026-09-26. Prepared by Tailor Law Professional Corporation from the official sources listed above.

Talk Through Your Numbers With a Lawyer

A calculator gives you a starting point. We can tell you how the rules apply to your facts, where the other side is likely to push back, and what a realistic outcome looks like.

Book Your Free 30-Minute Consultation

Or call (905) 366-0202

This calculator provides general information about Ontario family law and an estimate based only on the figures you enter. It is not legal advice and does not create a lawyer-client relationship. Results can differ from what a court orders or what parties agree. Speak with a lawyer before relying on any figure.

Net Family Property and Equalization Calculator for Ontario