The average marriage in England and Wales lasts about 12.2 years before divorce, according to the Office for National Statistics. That's the ones that end. Plenty last a lifetime. But the statistic tells you something useful: a significant number of marriages don't survive the decade, and the legal process of ending them is expensive, adversarial, and emotionally brutal.
So what if we built the off-ramp in from the start?
Every marriage expires after five years. Automatically. Unless both parties sign a renewal, the marriage dissolves. No lawyers, no proceedings, no blame. Just a quiet administrative ending, like a passport lapsing.
The wedding changes
The first effect is cultural. "Till death do us part" becomes "for the next five years, at which point we'll reassess." The vows get more honest and significantly less romantic. Wedding speeches shift tone. Your uncle doesn't cry. The DJ plays the same songs regardless.
But the wedding industry probably doesn't shrink. If anything, renewal ceremonies become a thing. Your fifth anniversary isn't just dinner; it's a conscious re-commitment. Some couples would make it bigger than the original wedding. Others would keep it private. A few would use the occasion to quietly not renew, citing irreconcilable differences with the caterer.
Prenuptial agreements become standard, since every marriage now has a defined endpoint. The financial arrangements at renewal would need to be explicit. What happens to the house, the savings, the pension contributions from the first term? Marriage law would start to resemble contract law, because that's what it would be.
The four-year itch
You know the seven-year itch? This would move it forward and intensify it. Around year four, every married couple would face the Renewal Question. Not "are we happy?" which is vague and answerable in a dozen ways, but "do I want to sign a legal document committing to five more years with this person?" That's specific. That's a decision with a deadline.
Some couples would thrive under the pressure. The approaching expiry forces conversations that many married people avoid for decades. Are we still working? What do we want from the next five years? Is this still the right partnership? Having a structured moment to ask these questions isn't inherently bad. Marriage counsellors essentially try to create these moments artificially. The five-year system builds them into the calendar.
Other couples would be destroyed by it. The anxiety of knowing your partner is deciding whether to renew, the possibility of being the one who wants to stay while the other doesn't, the power imbalance in a relationship where one person cares more. Year four would be tense in a lot of households. Year five would be a minefield.
Children complicate everything
This is where the proposal hits a wall. A child born in year one of a marriage would be four when the first renewal arrives. The decision to renew or dissolve is no longer just about two adults. And the system can't force renewal for the sake of children without defeating the entire purpose.
Under current law, custody arrangements following divorce are already complex, expensive, and often damaging. A five-year cycle doesn't simplify this. It just schedules it. Every five years, children in non-renewed marriages would face a formal restructuring of their family. The normalisation of that might make it less traumatic (children adapt to what's normal), or it might create a generation of kids who never feel settled.
Countries would have to decide whether children extend the marriage term automatically. If they do, the system loses its simplicity. If they don't, the system appears indifferent to children's welfare. There's no clean answer.
Who benefits
People trapped in bad marriages. Currently, leaving a marriage requires one party to initiate proceedings, endure the legal process, and often face social stigma. In the five-year system, leaving is the default. Doing nothing ends the marriage. The person who wants out doesn't have to act; they just have to wait. For people in controlling or abusive relationships, this is a genuine safety mechanism. The expiry date arrives whether the controlling partner agrees or not.
It also benefits people who married young and grew apart. Instead of the guilt and failure narrative around divorce, the non-renewal carries no blame. "We had a good five years and chose not to continue" is a fundamentally different sentence from "we're getting divorced." The social framing matters.
Religious communities would reject this almost universally. Marriage as a sacrament, as a permanent covenant, is doctrinally non-negotiable in most major faiths. The Catholic Church doesn't even recognise divorce, let alone scheduled dissolution. A five-year system would likely exist as a civil framework alongside religious marriages that operate on their own terms, which is already how things work in many countries, but the tension would be louder.
The economics shift
Housing markets change immediately. The assumption that a married couple buys a home and stays in it for 25 years while paying a mortgage falls apart when the marriage has a five-year horizon. Mortgage products would need to account for the possibility of dissolution at each renewal point. Lenders would want clarity on what happens to the property.
Shared assets become rolling negotiations. If you know the marriage might end in year five, you think differently about joint investments. You might keep finances more separate. You might buy a smaller house. You might rent instead.
Insurance, pensions, inheritance law, tax benefits: all of these currently assume marriage is indefinite. A defined-term marriage restructures the financial incentives entirely. Some couples would find this liberating (clearer boundaries, fewer assumptions). Others would find it corrosive (how do you build a life together on a five-year lease?).
What about serial renewal
A couple that renews at year five, ten, fifteen, twenty, eventually looks exactly like a couple in a traditional marriage. They've chosen each other repeatedly, which you could argue is more meaningful than choosing once at twenty-six and then never revisiting the question.
But the repeated choosing changes the psychology. You're never fully settled. There's always another renewal coming. For some people, that ongoing intentionality would strengthen the relationship. For others, it would prevent the deep, unquestioned security that long marriages provide. The knowledge that your partner could simply not renew, without explanation or consequence, is a background hum that never quite fades.
Divorce lawyers, by the way, would not rejoice. They'd lose the adversarial divorce business almost entirely. What they'd gain is a booming contract renewal practice, which is less lucrative and far less dramatic. Family law would become boring, which might actually be an improvement.
The five-year marriage isn't obviously better or worse than permanent marriage. It solves some real problems (trapped spouses, messy divorces, outdated social expectations) and creates new ones (instability, rolling anxiety, complications for children). What it does, more than anything, is force honesty. You can't coast in a marriage that's about to expire. You either want to be there or you don't, and the calendar is going to make you say so out loud.