Annulment vs Divorce: What's the Difference?

"Can't we just get an annulment? We've only been married six months."
Unfortunately, an annulment isn't simply a quick-fix alternative to divorce for short marriages.
The confusion makes perfect sense. Both legal processes end marriages, but they operate on completely different principles. After years of guiding clients through these decisions, our legal team has noticed persistent misconceptions about what separates these two paths - so let’s clear things up.
What is Divorce?
Divorce ends a valid marriage. Full stop. The process acknowledges that yes, you were legally married, but now that relationship has broken down beyond repair, and you are no longer a married couple.
It’s worth noting that UK divorce law underwent a seismic shift in April 2022. Before then, couples faced an unpleasant choice: either blame one person for the marriage's failure (citing things like adultery or unreasonable behaviour) or live separately for at least two years before filing.
The new "no-fault" approach changed things - now, either spouse can simply state the marriage has irretrievably broken down. No finger-pointing required, and no airing of dirty laundry in legal documents.
For many couples, this change has been transformative. The relief of avoiding blame games while ending a marriage can't be overstated. That said, divorce still involves complex negotiations around money, property, and children, and the emotional toll remains significant, even when the legal process has been streamlined.
What is Annulment?
Annulment takes a radically different approach. Instead of ending a valid marriage, it declares the marriage was never legally valid in the first place.
Think of it this way: divorce says "this marriage existed but now it's over," while annulment says "legally speaking, this marriage never properly existed at all."
Many associate annulments primarily with religion, particularly Catholicism. While religious annulments certainly exist, civil annulments are entirely separate and follow their own legal criteria.
The grounds for civil annulment are surprisingly limited:
- One party was already married (bigamy)
- The spouses are closely related
- Either spouse was under 16
- Proper consent wasn't given (perhaps due to duress, mental incapacity, or fundamental mistake)
- The marriage wasn't consummated (heterosexual marriages only)
- One spouse had an undisclosed STD when marrying
- The wife was pregnant by another man when the marriage took place
The most common misconception? That short marriages automatically qualify for annulment. They don't. The law doesn't care how briefly you were married – only whether the marriage was legally valid when it happened.
Key Differences Between Annulment and Divorce
Beyond the philosophical distinction, several practical differences separate these processes:
Timing requirements differ dramatically
You can file for divorce 1 year after marrying. For annulments, you typically must act within three years of the wedding if the marriage is "voidable." Miss this window, and annulment may no longer be an option.
Financial matters follow different rules

Divorce courts have broad powers to divide assets fairly. With annulments – especially for marriages deemed completely "void" – financial remedies might be more limited, though courts retain some discretion to ensure fairness.
Religious implications vary enormously
For people whose faith prohibits divorce, annulment might represent the only acceptable option. However, getting a civil annulment doesn't automatically grant a religious one – these are completely separate processes with different requirements.
Personal and social perceptions often differ
Some find annulment less stigmatising than divorce – suggesting the marriage was flawed from the start rather than failed over time. Others feel annulment invalidates a significant life experience, as if erasing a chapter of their history. These reactions are deeply personal and vary tremendously.
How to Choose Between Annulment and Divorce
Circumstances usually dictate which option is available. The strict criteria for annulment mean divorce is the only path for most couples.
Annulment might work when:
- Your situation genuinely fits one of the specific legal grounds
- Religious beliefs make divorce problematic
- You married under duress or without proper consent
- Your marriage falls into a "void" category like bigamy
Divorce becomes necessary when:
- Your marriage was valid but has deteriorated
- You don't meet annulment criteria
- The three-year window for annulment has closed
- You want clearer financial remedies
Since no-fault divorce became available, annulment's practical advantages have diminished considerably. Proving grounds for annulment often requires gathering sensitive evidence and potentially uncomfortable testimony – hurdles many prefer to avoid when a more straightforward option exists.
The Annulment and Divorce Processes Explained
Both processes end with a single status but follow markedly different paths.
The divorce process has been dramatically simplified. Either one or both spouses can apply online, stating the marriage has irretrievably broken down. After a mandatory 20-week reflection period, you can apply for a Conditional Order. Six weeks later, you can obtain the Final Order that legally ends your marriage. For details, check our step-by-step guide to getting a divorce.
Annulment requires filing a nullity petition that clearly states your grounds and provides supporting evidence. If uncontested, the court may grant a Decree of Nullity. For financial matters, you'll likely need additional proceedings similar to those in divorce cases.
Neither process happens overnight. Even straightforward divorces take at least 6-12 months under current legislation. Annulments often take longer, especially when evidence gathering proves complex or the petition faces challenges.
Final Thoughts
For most couples, practical considerations will ultimately determine your path forward. Despite potential religious or personal preferences for annulment, its strict legal criteria make it unavailable to most, and the shift to no-fault divorce in the UK has further simplified the more common route.
That being said, navigating these complex processes often demands expert guidance. For those struggling with these decisions, seeking legal insights for separating couples can prove invaluable. At Skylark Hill, our family law specialists can translate complex legal concepts into practical advice tailored to each unique situation.
And whether through annulment or divorce, ending a marriage marks a profound life transition. With proper support, this challenging period can give way to new beginnings. The legal mechanism matters less than finding the path that offers the most dignity, fairness, and potential for healing.