Divorce vs Marriage Annulment: What’s the Difference?

Divorce vs Marriage Annulment

If you are weighing up a Divorce vs Marriage Annulment, the right route depends on why your marriage is ending and how long ago you married. Some people are surprised to learn that annulment is even an option in England and Wales, and even more surprised to find that the grounds are far narrower than they expected. This guide walks you through what annulment really means, when it applies, how it compares to divorce, and what happens next.

If you have already decided that divorce is the better fit, our step-by-step guide covers the full process from application to final order. For everyone else, read on.

What Does Annulment Mean?

The annulment meaning in English family law is straightforward in principle but precise in practice. An annulment is a court order that declares your marriage to be either void or voidable. The legal term for this is a nullity of marriage, and the process is sometimes called “applying for nullity”.

There are two categories, and the difference matters a lot in law, even though the practical effect can feel similar.

Void Marriage

A void marriage is one that was never legally valid in the first place. In the eyes of the law, it simply did not happen, even if you went through a ceremony. You do not strictly need a court order to confirm this, but most people apply for a nullity decree so they have official paperwork to rely on.

Voidable Marriage

A voidable marriage is one that was legally valid when you married but can be cancelled because of a defect that existed at the time. Unlike a void marriage, a voidable one is treated as valid until a court formally annuls it.

Annulment vs Divorce UK: The Core Differences

When people search for annulment vs divorce UK, they usually want a side-by-side comparison. The two routes lead to broadly the same place, you are free to marry someone else, but the legal mechanics, timing, and reasoning are quite different.

In short, divorce says “this marriage existed and is now over”. An annulment of marriage UK says “this marriage was either never legal or should never have been allowed to stand”.

Grounds for Annulment: Void Marriages

The grounds for annulment are set out in sections 11 and 12 of the Matrimonial Causes Act 1973. A marriage is automatically void if any of the following applied at the time of the wedding:

• Close blood relatives: the parties are within the prohibited degrees of relationship (for example, parent and child, siblings, or certain in-laws).
• Under 18: either party was under the legal age of marriage. Since 27 February 2023, this has been 18 in England and Wales.
• Marriage formalities not met: the parties knowingly disregarded legal requirements (for example, no proper notice, an unauthorised venue, or no authorised officiant).
• Already married or in a civil partnership: one party was lawfully married or in a civil partnership to someone else at the time (this can be bigamy).
• Polygamous marriage: a polygamous marriage entered into outside England and Wales where one party was domiciled here.

If any of these apply, the marriage is treated as never having legally existed, even if you have a marriage certificate and held a ceremony attended by family and friends.

Grounds for Annulment: Voidable Marriages

A voidable marriage is valid until a court annuls it. The grounds are:

• Non-consummation: the marriage was not consummated due to incapacity or wilful refusal by one party. This ground only applies to opposite-sex marriages.
• Lack of valid consent: one party did not properly consent due to duress, mistake (for example, about the identity of the other person or the nature of the ceremony), or mental incapacity.
• Mental disorder: at the time of the marriage, one party was suffering from a mental disorder making them unfit for marriage.
• Sexually transmitted disease: one party had a venereal disease in a communicable form at the time of the marriage and the other did not know.
• Pregnancy by another person: the wife was pregnant by someone other than the husband at the time of the marriage, and the husband did not know.
• Acquired gender: one party had a gender recognition certificate issued after the marriage and the other did not know.

Most voidable grounds, with the exception of non-consummation, have a three-year time limit from the date of the marriage. After that, the right to apply for nullity is usually lost.

When Annulment Might Be the Right Choice

For most couples, divorce is the practical route, especially since the no-fault rules came into force in April 2022. But there are situations where annulment is a better fit, and sometimes the only legally accurate option.

• You married less than 12 months ago: you cannot apply for divorce in the first year of marriage, but you can apply to annul on the right grounds.
• Religious or cultural reasons: some people prefer not to have been “divorced” for personal, religious, or community reasons, and prefer the legal position that the marriage was never valid.
• The marriage was a sham or forced: there was no genuine consent, or the ceremony was not legally valid.
• Bigamy: one party was already married, so the second marriage is void.
• Non-consummation: in an opposite-sex marriage, where the marriage was not consummated and both parties accept this.

If none of these apply, divorce will usually be the simpler and quicker route.

How to Apply for a Marriage Annulment

The process for a marriage annulment in England and Wales is set out by the family court. It runs through several stages, and the practical steps look like this:

Step 1: Check You Have Grounds

This is the most important step. You must be able to point to a specific legal ground listed in the Matrimonial Causes Act 1973. If you are not certain, take legal advice before filing anything.

Step 2: Complete the Nullity Application

The application can be made online or by paper form. You will need your marriage certificate and the relevant details of your spouse. The court fee is £628, the same as for a divorce, with help available through help with court fees if you are on a low income.

Step 3: Serve the Application

Your spouse is sent the application and given the chance to respond. Most annulments are uncontested. If your spouse disputes the application, the case can become more complex and a court hearing may be needed.

Step 4: Conditional Order (Decree Nisi)

If the court is satisfied that the grounds are met, it will issue a conditional order. This is the equivalent of the decree nisi in divorce, although the terminology since 2022 favours “conditional order”.

Step 5: Final Order (Decree Absolute)

At least six weeks and one day after the conditional order, you can apply for the final order. Once this is granted, the marriage is officially annulled and you are free to marry again.

Finances After an Annulment

A common misunderstanding is that an annulment wipes the financial slate clean. In law, both parties can still make financial claims against each other in exactly the same way as on divorce. This includes claims for capital, income, pensions, and property.

If you have been married only a short time, the court is likely to take a different approach to splitting assets than after a long marriage. Short marriages usually mean each party walks away with broadly what they brought in, although this is not a strict rule. The court applies the section 25 factors of the Matrimonial Causes Act 1973, balancing things like contributions, needs, and the welfare of any children.

A financial agreement should be turned into a consent order and approved by the court. Without one, financial claims can remain open for many years after the annulment, even if you have remarried. Our guide to consent orders explains how this works and why it matters.

Children After an Annulment

Children of a void or voidable marriage are still legitimate in law and arrangements for their care are dealt with in the same way as in any other family case. The welfare of any child is the paramount consideration under the Children Act 1989.

Most parents resolve where the children will live, how time will be shared, and how decisions will be made through agreement rather than court. Mediation is usually the recommended first step, and a written parenting plan can be used to record what you both agree.

Is Annulment Cheaper Than Divorce?

In short, no. The court fee is the same. Where annulment can be more expensive is when grounds are disputed, because the court may need evidence (for example, medical evidence on non-consummation or mental capacity, or witnesses on duress). Contested annulments can involve solicitors and barristers in a way that no-fault divorces normally do not.

For most people, the headline cost is not the court process itself but the financial settlement that follows. This is where mediation can make a real difference, with fixed fees and a typical resolution in a fraction of the cost of contested court proceedings. You can see what mediation costs on our fees page.

Religious Annulments and Civil Annulments

It is worth pointing out the difference between a religious annulment and a legal one. A Catholic annulment, for example, is granted by a Church tribunal and recognises the marriage as never valid in the eyes of the Church. It has no legal effect under English law.

If you want the marriage ended in law, you still need either a civil annulment through the family court or a divorce. Many people pursue both for personal and legal reasons, but they are entirely separate processes.

Mediation and Annulment

Mediation does not change whether you get a divorce or an annulment, those are decided by the court based on the law. What mediation does is help you sort out everything that flows from the end of the marriage: finances, property, pensions, debts, and arrangements for any children.

If you do later need to go to court for financial remedy or child arrangements, you would normally need to attend a MIAM first to consider whether mediation could resolve matters without litigation. This applies to both proceedings, so whether you are heading towards annulment or divorce, mediation is often the first practical step.

Frequently Asked Questions