Adultery is a recognized ground for divorce in New Brunswick under the federal Divorce Act, R.S.C. 1985, c. 3, s. 8(2)(b), allowing spouses to bypass the standard one-year separation period and file immediately. However, despite its emotional weight, adultery divorce in New Brunswick has minimal impact on property division, spousal support calculations, or parenting arrangements. Approximately 95% of Canadian divorces proceed on no-fault grounds because proving adultery requires substantial evidence that most couples find burdensome to gather. The filing fee for divorce in New Brunswick totals $110, and fault-based divorces typically cost $3,000-$8,000 more in legal fees than uncontested separations due to the evidentiary requirements involved.
| Key Facts | Details |
|---|---|
| Filing Fee | $110 total ($100 petition + $10 Clearance Certificate) |
| Waiting Period | None for adultery-based divorce |
| Residency Requirement | 1 year in New Brunswick |
| Grounds for Divorce | Separation (1 year), Adultery, or Cruelty |
| Property Division | Equal division under Marital Property Act |
| Adultery Impact on Property | Generally none |
| Adultery Impact on Support | Generally none |
| Court | Court of King's Bench, Family Division |
What Is Adultery Under New Brunswick Divorce Law?
Adultery in New Brunswick divorce law means voluntary sexual intercourse between a married person and someone other than their spouse, as defined under Divorce Act, R.S.C. 1985, c. 3, s. 8(2)(b)(i). A single act of adultery is legally sufficient to establish grounds for divorce, regardless of the affair's duration. Emotional affairs, inappropriate texting, or romantic relationships without sexual contact do not meet the legal threshold for adultery, even when they cause significant marital harm. The cheating spouse divorce process requires the petitioning spouse to prove the adultery occurred through admissible evidence such as confessions, witness testimony, photographs, text messages, or other documentation.
The federal Divorce Act governs all divorces in Canada, including those filed in New Brunswick. Under section 8(1), the sole ground for divorce is "breakdown of the marriage," which can be established in three ways: one-year separation, adultery by the respondent spouse, or physical or mental cruelty. Unlike the separation ground, which requires waiting 12 months, adultery allows immediate filing once evidence is secured.
Important distinctions exist between legal adultery and colloquial understandings of infidelity. The law requires proof of actual sexual intercourse, not merely suspicious behavior or romantic attachment. Courts will not grant a divorce on adultery grounds based on speculation, opportunity, or emotional betrayal alone. The standard of proof is the civil standard—a preponderance of evidence—but mere suspicion is insufficient.
Can You Use Adultery to Get a Faster Divorce in New Brunswick?
Yes, proving adultery eliminates the one-year separation waiting period required for no-fault divorce in New Brunswick, potentially reducing the timeline by 8-12 months. When adultery is established, the petitioning spouse can file immediately with the Court of King's Bench, Family Division. However, the practical time savings often diminish because contested adultery claims require court hearings, evidence presentation, and potentially cross-examination of witnesses. Uncontested divorces based on one-year separation typically finalize in 4-6 months, while contested adultery cases can take 12-18 months when the respondent disputes the allegations.
The costs associated with proving adultery often outweigh the time benefits. Legal fees for contested divorces in New Brunswick range from $5,000-$15,000 compared to $1,500-$3,500 for uncontested separations. Private investigation costs, if needed, add $2,000-$5,000. Most family lawyers advise clients that unless adultery can be proven quickly through a confession or unambiguous evidence, proceeding on separation grounds is more practical.
New Brunswick courts require proper service of divorce documents on the respondent spouse. If adultery is alleged, the respondent receives notice and has 20 days to file a response. If they contest the allegations, the matter proceeds to a hearing where the petitioner must present evidence sufficient to satisfy the court that adultery occurred.
How Does Adultery Affect Property Division in New Brunswick?
Adultery has virtually no impact on property division in New Brunswick divorces. The Marital Property Act, R.S.N.B. 2012, c. 107 mandates equal division of marital property regardless of marital misconduct, reflecting Canadian family law's no-fault approach to asset distribution. Each spouse is entitled to 50% of marital property acquired during the marriage, whether or not one spouse committed adultery. Courts focus on financial contributions, not moral culpability, when dividing assets.
The one exception involves dissipation of marital assets. If a cheating spouse spent significant marital funds on an affair—expensive gifts, travel, housing for a paramour—courts may consider those expenditures during property division. For example, if one spouse spent $50,000 on an extramarital partner from joint savings, the court might adjust the division to compensate the innocent spouse. However, this adjustment addresses financial harm, not moral fault.
Marital property in New Brunswick includes the marital home, vehicles, furniture, investments, pensions, and other assets used for family purposes during the marriage. Excluded property typically includes pre-marital assets, inheritances, and gifts received from third parties during the marriage, though appreciation in value may be divisible. The affair divorce settlement process follows the same valuation and division principles regardless of whether adultery was a factor in the marriage's breakdown.
Does Adultery Affect Spousal Support in New Brunswick?
Adultery does not directly affect spousal support entitlement or calculations in New Brunswick. Under the Divorce Act, R.S.C. 1985, c. 3, s. 15.2, courts determine spousal support based on financial need, ability to pay, length of the marriage, roles during the marriage, and economic disadvantage from the marriage or its breakdown—not marital misconduct. An adulterous spouse retains full rights to claim spousal support if they otherwise qualify, and an innocent spouse cannot be ordered to pay more support as punishment for their partner's infidelity.
Canadian courts explicitly reject moral fault as a factor in support determinations. The Federal Spousal Support Advisory Guidelines, which New Brunswick courts follow, calculate support ranges based on income, duration of marriage, and presence of children. A spouse earning $50,000 annually who was married for 15 years would receive the same support calculation whether their marriage ended due to adultery or mutual separation.
There are narrow circumstances where conduct may be relevant. If adultery created circumstances affecting a spouse's economic need—for example, if an innocent spouse developed depression requiring treatment and affecting employability—that economic impact could factor into support calculations. However, the adultery itself remains legally irrelevant; only its economic consequences matter.
How Does Adultery Affect Parenting Arrangements in New Brunswick?
Adultery has no direct effect on parenting arrangements, parenting time, or decision-making responsibility in New Brunswick divorces. Following the 2021 amendments to the Divorce Act, R.S.C. 1985, c. 3, courts determine parenting matters based solely on the best interests of the child, with specific factors enumerated in section 16. Marital infidelity between parents is not among those factors unless it directly harmed the children or created safety concerns.
The 2021 Divorce Act amendments replaced outdated "custody" and "access" terminology with "parenting time" and "decision-making responsibility." Courts now focus on factors including each parent's relationship with the child, the child's physical and emotional needs, stability of proposed arrangements, each parent's willingness to support the child's relationship with the other parent, and any history of family violence. An affair, regardless of how hurtful to the other spouse, typically has no bearing on these considerations.
However, if the adultery exposed children to inappropriate situations—such as a parent involving children in concealing the affair, introducing children to a paramour inappropriately, or neglecting children while pursuing an extramarital relationship—those circumstances could be relevant. Similarly, if the affair led to family instability affecting children's wellbeing, courts might consider those impacts. The adultery itself is not relevant; its effects on children are.
What Evidence Is Needed to Prove Adultery in New Brunswick?
Proving adultery in New Brunswick requires evidence meeting the civil standard of proof—a preponderance of evidence, meaning more likely than not. The petitioning spouse must demonstrate that their partner engaged in voluntary sexual intercourse with another person. Acceptable evidence includes the responding spouse's confession or admission, testimony from the third party, photographs or videos, text messages, emails, or other communications, hotel receipts, credit card statements, or financial records, and witness testimony regarding circumstances indicating adultery.
Courts can infer adultery from circumstantial evidence when the facts lead to a reasonable conclusion that sexual intercourse occurred. However, evidence of mere opportunity—being alone together, sharing accommodation, or demonstrating affection—is insufficient without additional indicators of sexual activity. Courts distinguish between strong circumstantial evidence and mere suspicion.
Obtaining evidence must comply with privacy laws and court rules. Evidence obtained illegally—such as hacking email accounts, unauthorized recording of conversations, or stalking—may be excluded from proceedings. New Brunswick courts follow strict rules about relevance and legality of evidence. Hiring a licensed private investigator to conduct surveillance within legal boundaries is generally acceptable, while accessing a spouse's accounts without authorization typically is not.
The responding spouse does not need to be "caught in the act." The petitioner must simply present sufficient credible evidence for the court to conclude on a balance of probabilities that adultery occurred. The third party (co-respondent) does not need to be named in the divorce petition, though they may be if the petitioner chooses. If named, the co-respondent must be served with the application and has the right to respond.
Adultery vs. One-Year Separation: Which Is Better?
| Factor | Adultery Ground | One-Year Separation |
|---|---|---|
| Waiting Period | None | 12 months |
| Evidence Required | Substantial proof | Minimal |
| Typical Legal Costs | $5,000-$15,000 | $1,500-$3,500 |
| Timeline if Contested | 12-18 months | 4-6 months |
| Emotional Difficulty | Very high | Lower |
| Impact on Property | None | None |
| Impact on Support | None | None |
| Impact on Parenting | None | None |
| Success Rate | Lower if contested | Very high |
Most family lawyers in New Brunswick recommend proceeding on one-year separation grounds rather than adultery, even when infidelity clearly occurred. The separation ground requires minimal evidence—simply demonstrating that spouses lived separately for 12 months—while adultery requires substantial proof that may be difficult or expensive to obtain. Additionally, 95% of Canadian divorces proceed on no-fault grounds, indicating the practical preference for this approach.
The exception is when adultery can be easily proven, such as when the responding spouse admits to the affair and does not contest the divorce. In those cases, proceeding on adultery grounds can accelerate the process while maintaining an uncontested proceeding. If both spouses agree to use adultery grounds and the respondent provides an affidavit admitting the conduct, the divorce can proceed quickly without the cost and conflict of a contested hearing.
Can You Sue the Third Party for Adultery in New Brunswick?
No, you cannot sue the third party ("alienation of affection" or "criminal conversation") for adultery in New Brunswick or anywhere in Canada. These common law torts were abolished decades ago and have no legal standing in Canadian courts. A spouse cannot recover monetary damages from the person with whom their partner had an affair. Adultery is not a crime in Canada—no one can be arrested, charged, or jailed for having an extramarital affair.
Some spouses seek to name the co-respondent in divorce proceedings to cause embarrassment or obtain closure. While technically permitted, this approach rarely serves any practical purpose and may increase legal costs by requiring service on an additional party. Most family lawyers advise against naming the third party unless there is a specific strategic reason, such as when the third party's testimony is needed to establish the adultery.
How Much Does an Adultery Divorce Cost in New Brunswick?
The basic court filing fees for any divorce in New Brunswick total $110 ($100 for the petition plus $10 for the Clearance Certificate from the Central Registry of Divorce Proceedings). After the divorce is finalized, a Certificate of Divorce costs $7. However, legal fees vary dramatically depending on whether the divorce is contested.
| Cost Category | Uncontested Divorce | Contested Adultery Divorce |
|---|---|---|
| Court Filing Fees | $110 | $110 |
| Legal Fees | $1,500-$3,500 | $5,000-$15,000 |
| Private Investigator | N/A | $2,000-$5,000 |
| Expert Witnesses | N/A | $1,000-$3,000 |
| Total Estimated Cost | $1,610-$3,610 | $8,110-$23,110 |
Fee waivers are available for New Brunswick residents receiving social assistance under the Family Income Security Act or represented by domestic Legal Aid. The Registrar also has discretion to waive fees when legal services are provided pro bono and payment would impose financial hardship.
As of April 2026. Verify current fees with the Court of King's Bench, Family Division.
What Are the Residency Requirements for Filing?
At least one spouse must have been ordinarily resident in New Brunswick for a minimum of one year immediately before filing the divorce petition, as required by Divorce Act, R.S.C. 1985, c. 3, s. 3(1). Canadian citizenship is not required—any legally married couple where one spouse meets the residency requirement can file, regardless of immigration status or country of marriage. There is no county or municipal residency requirement; residence anywhere in New Brunswick for 12 months qualifies.
"Ordinarily resident" means having a settled intention to reside in New Brunswick, not merely temporary presence. Evidence of residency includes utility bills, lease agreements, employment records, bank statements, or testimony from witnesses who can confirm residence. If neither spouse meets New Brunswick's residency requirement, the divorce must be filed in whichever Canadian province where one spouse qualifies.
Key Takeaways: Infidelity and Divorce in New Brunswick
While infidelity divorce in New Brunswick provides an alternative to waiting one year for separation grounds, its practical benefits are limited. Adultery requires proof that may be difficult or expensive to obtain, and even when established, it has no impact on property division, spousal support, or parenting arrangements. The cheating and custody connection that many spouses expect does not exist under Canadian family law unless the affair directly harmed children.
For most couples, the better approach is proceeding on one-year separation grounds, which requires minimal evidence and typically results in faster, less expensive resolutions. However, when adultery can be easily proven through confession or clear evidence, it offers a path to immediate filing without the 12-month waiting period.
Consulting with a New Brunswick family lawyer is essential for understanding how these principles apply to your specific situation. Many offer initial consultations at reduced rates or no charge to discuss options and develop appropriate strategies for your circumstances.
Frequently Asked Questions
Does adultery affect how property is divided in New Brunswick?
No, adultery does not affect property division in New Brunswick. Under the Marital Property Act, R.S.N.B. 2012, c. 107, each spouse receives an equal 50% share of marital property regardless of marital misconduct. Courts may only adjust division if affair-related spending dissipated marital assets, addressing financial harm rather than moral fault.
Can I file for divorce immediately if my spouse cheated?
Yes, proving adultery under Divorce Act, s. 8(2)(b)(i) eliminates the one-year separation waiting period in New Brunswick. You can file immediately with the Court of King's Bench, Family Division, once you have evidence sufficient to prove the adultery occurred. Filing fees total $110.
Will adultery affect my spouse's parenting time with our children?
No, adultery does not directly affect parenting arrangements in New Brunswick. Courts determine parenting time and decision-making responsibility based solely on the child's best interests under Divorce Act, s. 16. Marital infidelity is not among the statutory factors unless it directly harmed the children.
What evidence do I need to prove adultery in New Brunswick?
Acceptable evidence includes the spouse's confession, testimony from the third party, text messages, emails, photographs, hotel or financial records, and witness testimony. Courts require proof on a balance of probabilities—more likely than not. Mere suspicion or opportunity alone is insufficient; evidence must indicate actual sexual intercourse occurred.
Does adultery affect spousal support payments?
No, adultery does not affect spousal support calculations in New Brunswick. Under Divorce Act, s. 15.2, support is based on financial need, ability to pay, marriage duration, and economic disadvantage—not marital misconduct. An adulterous spouse retains full support rights if they otherwise qualify.
Can I sue the person my spouse had an affair with?
No, "alienation of affection" and "criminal conversation" lawsuits against third parties were abolished in Canada. You cannot recover damages from the person involved in your spouse's affair. Adultery is not a crime in Canada—no criminal charges or civil lawsuits against the third party are available.
How much does a divorce based on adultery cost?
Court filing fees total $110 in New Brunswick. Legal fees for contested adultery divorces typically range from $5,000-$15,000, compared to $1,500-$3,500 for uncontested separations. Private investigation costs add $2,000-$5,000 if needed. Total costs for contested adultery cases may reach $8,000-$23,000.
Is adultery a crime in New Brunswick or Canada?
No, adultery is not a crime anywhere in Canada. You cannot be arrested, charged, fined, or jailed for having an extramarital affair. Adultery is only relevant as grounds for divorce under civil family law, not criminal law.
What if I committed adultery—can I still file for divorce?
Yes, but you cannot use your own adultery as grounds. Under the Divorce Act, only the "innocent" spouse can cite adultery as grounds against the other spouse. However, you can file based on one-year separation regardless of who committed adultery, and your adultery will not affect your property, support, or parenting rights.
How long does an adultery-based divorce take in New Brunswick?
If uncontested (spouse admits adultery), 3-6 months. If contested, 12-18 months or longer. By comparison, uncontested divorces based on one-year separation typically finalize in 4-6 months. The evidentiary requirements of adultery cases often extend timelines rather than shortening them.