Fault explained: What to know about fault-based divorce

Ending a marriage is emotionally draining, especially when one spouse’s actions contribute to the unraveling of the relationship. Many couples choose a no-fault divorce, but Pennsylvania law also allows fault-based divorces in certain situations. Knowing what “fault” means can help you make informed choices and protect your rights.

What is a fault-based divorce in Pennsylvania?

A fault-based divorce happens when one spouse claims the other caused the marriage to fail through specific misconduct. Unlike a no-fault divorce, a fault claim requires proof that one spouse did something wrong. Pennsylvania law (23 Pa. C.S. § 3301) recognizes these grounds for a fault-based divorce:

  • Adultery: Having sexual relations outside the marriage
  • Cruel treatment: Threatening the life or health of the other spouse
  • Desertion (abandonment): Leaving the marital home without justification for at least one year
  • Imprisonment: Serving a sentence of two years or more
  • Bigamy: Entering a second marriage while the first is still valid
  • Indignities: Engaging in a course of conduct that makes life burdensome and intolerable.

To file a fault-based divorce, you must be the “innocent and injured spouse.” If both spouses share fault, a court may deny the claim. Fault usually does not affect how marital property is divided. However, it can influence alimony and sometimes custody decisions.

How to approach a fault-based claim

If you think a fault-based divorce applies to your case, consider these steps:

  • Document misconduct: Keep records, photos and messages showing the spouse’s behavior.

  • Seek legal guidance: Consult a Pennsylvania family law attorney to understand filing rules and required evidence

  • Consider mediation: Use mediation to reduce conflict and focus on children’s best interests, even with fault grounds

  • Prepare for court: Gather testimony and evidence, knowing fault-based claims may take longer to resolve

Careful, deliberate steps can help you manage the process and reduce stress.

Guidance for difficult decisions

Pennsylvania’s fault-based divorce laws give spouses an option when serious misconduct has harmed the marriage. Understanding your rights and getting professional guidance can help you protect your interests and your family. Every situation is different, so consulting an experienced attorney can help you make informed decisions and take the next steps with support.

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