Living together confers no legal status in Singapore. There is no such thing as common-law marriage here, and there is no length of cohabitation that converts a relationship into one. Ten years of shared bills, a shared home and a shared life produce exactly the same legal position as a month: none.

That is not an argument for or against cohabiting. It simply means the protections that marriage supplies by default have to be created deliberately if you want them. Most of that is paperwork, most of it is inexpensive, and almost all of it is easier to do now than after something has gone wrong.

The Women’s Charter gives the Family Justice Courts extensive powers over married couples: dividing matrimonial assets, ordering maintenance, and weighing indirect contributions such as homemaking and childcare. None of those powers exists between people who are not married.

So if a cohabiting relationship ends, there is no division of assets, no spousal maintenance, and no credit for years spent running the household or supporting the other person’s career. What is left is ordinary property law, which asks blunt questions: whose name is on it, who paid, and was there an agreement. The full picture is set out in what rights unmarried couples have in Singapore, and the practical mechanics of separating are covered in ending a cohabiting relationship.

The people most exposed by this are the ones who contributed in ways that leave no paper trail: the partner who paid the groceries while the other paid the mortgage, or who left work to care for a child.

The home: how it is held, and in whose name

This is where the largest sums and the worst disputes sit.

If you are renting

Whoever is named on the tenancy agreement holds it. If only one of you is named, the other has no security and can be required to leave. Being on the tenancy also means being liable for the rent, which cuts both ways. Decide deliberately rather than by default, and if only one name goes on, be clear with each other about what happens if the relationship ends.

If you are buying together

Two decisions matter more than any other. The first is the proportions in which you hold the property. The second is the form of co-ownership: joint tenancy, where the survivor automatically takes the whole on death, or tenancy in common, where each share passes under that owner’s will. The difference is explained in joint tenancy versus tenancy in common, and it is a decision made at purchase that is awkward to change later.

Unmarried buyers face additional issues around financing, stamp duty and what happens if one party wants out. Those are dealt with in buying property with a partner you are not married to.

If you are moving into a home your partner already owns

The most common and most dangerous arrangement. Contributions to the mortgage, to renovation or to the running of the household do not automatically create an interest in the property. They may support a claim in some circumstances, but that claim is expensive, uncertain and evidence-heavy. If you are putting money into someone else’s property, record what it is for and what you expect to happen to it.

Money: contributions, accounts and debt

Keep a record. That is the whole of the advice, and it is the advice people most reliably ignore.

Rent, mortgage instalments, renovation, furniture, a car: note who paid what, and keep the transfers traceable rather than settling up in cash. This is not distrust; it is the only evidence that will exist if the question ever arises, and it protects whichever of you is right.

On joint accounts, understand that either holder can generally withdraw the whole balance, and that the money in the account is not necessarily owned in the proportions in which it was paid in. The issues are the same ones that surface between spouses, set out in how joint bank accounts are treated. Many cohabiting couples do better with separate accounts plus a small joint account for shared bills.

On debt, a partner’s debts are not yours unless you took them on, but joint borrowing, guarantees and being a supplementary cardholder do exactly that, and they survive the relationship. Read anything you are asked to sign as a co-borrower or guarantor, and understand that you remain liable even if you move out. The general principles are set out in how debts are treated when a relationship ends.

A cohabitation agreement

A written agreement recording what you each own, what you are each contributing, and what happens to the home and shared property if you separate. It is not a marriage substitute and it cannot bind a court on children, but it does two useful things: it records the facts while you both agree on them, and it forces a conversation most couples otherwise avoid.

It is most worth having where one of you owns the home, where contributions are unequal, where one of you is giving up income, or where there is a business or family money in the picture. What such an agreement can and cannot cover is set out in cohabitation agreements in Singapore.

Wills, LPAs and nominations: the part that surprises people

If you take nothing else from this page, take this. A cohabiting partner inherits nothing automatically and can make no decisions for you.

  • Intestacy. Die without a will and your estate passes under the Intestate Succession Act to a fixed list of relatives: spouse, children, parents, siblings. A partner is not on that list, at any length of relationship. Only a will can provide for them, and making a will in Singapore is straightforward.
  • Mental capacity. If you lose capacity through accident or illness, your partner has no authority over your treatment, your money or your home. A lasting power of attorney appointing them is the way to grant it, and it must be made while you still have capacity. Without one, someone would have to apply to court to be appointed deputy, and a partner is not the automatic choice.
  • Nominations. CPF monies pass by nomination, not by will, and insurance policies have their own beneficiary arrangements. Check both. A will alone does not redirect CPF.

Cohabiting couples with a home together and no will are the group most exposed by intestacy, because the surviving partner can find themselves living in a property that has passed to the deceased’s parents or siblings.

Children born while cohabiting

A child’s relationship with each parent does not depend on the parents being married to each other, but some things have to be established rather than assumed. Where the parents are unmarried, the father’s legal position is not automatic in the way a married father’s is, and paternity and the father’s name on the birth record need to be dealt with properly.

The practical consequences, covering maintenance, guardianship, custody, inheritance and the child’s own status, are set out in children born outside marriage in Singapore, and the process itself in establishing paternity. Deal with this at birth rather than years later; it is far simpler while both parents agree.

HDB realities

Singapore’s public housing rules are built around defined family nuclei and specific eligibility schemes, and a cohabiting couple does not form a nucleus in the ordinary way. That shapes a great deal of practical planning: which schemes are open, at what age, on what citizenship basis, and what happens to a booking if a relationship ends.

The rules change and the detail matters, so treat HDB as the authority on your own position and ask before committing money. Assumptions about HDB eligibility are among the most expensive mistakes cohabiting couples make.

What changes when you marry

Marriage switches on a large body of default rules at once. Your partner becomes a spouse for intestacy purposes, gains rights to maintenance, and brings the home and other assets within the court’s power to divide as matrimonial assets. Indirect contributions start counting. HDB eligibility changes. Immigration and tax positions change.

One consequence catches almost everyone: marriage revokes an existing will, unless the will was made in contemplation of that marriage. A couple who sensibly made wills for each other while cohabiting can find those wills automatically revoked on the wedding day, leaving them intestate at exactly the point they thought they were protected. The mechanics are set out in how a will is revoked. The fix is simply to make new wills, or to have the existing ones expressly made in contemplation of the marriage.

If marriage is on the horizon, the practical requirements and sequence are in the guide to getting married in Singapore. Sort the wills out in the same month; it is the one item that gets worse rather than better by waiting.