If you separated years ago and never divorced, the divorce itself is usually the easy part. Separation for the required period is one of the six facts that proves irretrievable breakdown: three years apart with your spouse’s consent, four years without it. Once you are past four years, you do not need their agreement and you do not need to prove anyone did anything wrong. Twenty years apart is not harder to prove than four.

The hard part is everything else. A long separation quietly builds up a set of financial and legal problems that a divorce five years in would never have created: assets bought while you were apart, a spouse who still inherits from you, a CPF nomination nobody updated, a new partner with no standing, and contribution evidence from two decades ago that no longer exists.

Long separation as the fact proving breakdown

The six facts that prove irretrievable breakdown include the two separation facts. What counts as separation is not purely about addresses: the courts look at whether the marriage has genuinely ceased as a household, whether you stopped living as a couple, stopped pooling finances, stopped presenting yourselves as married. Two people can be separated while living under the same roof if they run entirely separate lives.

For a long separation, the difficulty is almost never the substance. It is the evidence of the start date. If you left in 2004, you may have nothing to prove it. Useful anchors include a change of address on official records, tenancy agreements, the date one of you moved in with family, school records naming one parent’s address, or a deed of separation if you signed one. Where you are far beyond four years, an approximate date supported by a consistent account is usually enough.

Since July 2024 there is also divorce by mutual agreement. Where you are on speaking terms, that can be a cleaner route than reciting a separation history. The choice between the two, and where judicial separation and a deed fit in, is set out in the guide to separation and its formal alternatives.

Why the ancillary matters get harder, not easier

People assume that a long gap simplifies the money. It does the opposite. Time creates assets, destroys records and multiplies complications.

Assets acquired during the separation

Here is the point that surprises people most: you remained legally married throughout. Assets you acquired during the separation were acquired during the marriage, and are therefore potentially part of the pool of matrimonial assets. The flat you bought alone in 2015, the CPF you accumulated, the business you built after they left, none of it is automatically ring-fenced simply because you were living apart when you got it.

That said, the court’s task under section 112 is a just and equitable division, and a long separation is plainly relevant to what is just. A spouse who contributed nothing for fifteen years is in a weak position to claim an equal share of what was built in that period. The court has tools: how the pool is defined, how contributions are weighed, and what date assets are valued at. The choice of valuation date matters enormously here: valuing an asset at the date of separation rather than the date of the hearing can swing the figures dramatically over a twenty-year gap.

None of that is a formula. Do not assume either that everything is shared or that everything post-separation is yours. This is the single most useful thing to take proper advice on.

Evidence from twenty years ago

The structured approach to division rests on direct and indirect contributions. Proving them means documents, and banks purge records, CPF statements go back only so far, employers close, and the renovation receipts from 2003 are long gone.

Practical responses: pull whatever CPF contribution history and property transaction history you can while you are still at the start of the process; look for HDB and conveyancing files; check old tax records; and be realistic in your affidavit about what you can prove versus what you remember. Overstating a contribution you cannot evidence damages your credibility on the things you can prove. There is more on this in the guide to disclosure mistakes people make in divorce and in the mechanics of discovery and interrogatories, which is how you compel documents the other side holds.

You are still legally married, and it shows

This is the part that catches families out after a death, and it is the strongest argument for not leaving matters as they are.

  • Intestacy. If you die without a will, the Intestate Succession Act distributes your estate, and a separated spouse is still a spouse. Depending on who else survives you, they may take half or all of it. Your children then have to deal with a person who has been absent from the family for decades, through an application for letters of administration in which that spouse has priority to be appointed administrator.
  • CPF nominations. CPF savings do not pass under your will and are not caught by intestacy: they go to whoever you nominated. A nomination made at 25 naming the spouse you last saw in 2006 remains valid until you replace it. Divorce does not revoke it either. Check yours, and read up on the types of CPF nomination before making a new one.
  • Your will. If you made one before separating, your spouse may still be a beneficiary or executor. And note the reverse trap: in Singapore, marriage generally revokes an earlier will, so remarrying after a divorce without making a new will can wipe out your existing arrangements.
  • Insurance and other nominations. Life policies, employer benefits and trust nominations all follow their own documents. Check them individually. See insurance and divorce.
  • Housing. Being married affects HDB eligibility for you and, in some cases, for the person you now live with.

Fixing the nominations and the will is quick and cheap. Fixing them is also not a substitute for the divorce, because a spouse can have claims that go beyond what a nomination controls, but it stops the most avoidable harm immediately, and you can do it this month regardless of what you decide about the divorce.

Finding a spouse you have not seen in years

You cannot serve papers on someone whose whereabouts you do not know, and the court expects you to have tried. Reasonable efforts usually mean: the last known address, their relatives, mutual acquaintances, their last known employer, social media, and any address on documents you still hold.

Where that fails, the court can order substituted service (by newspaper advertisement, email, messaging app or another method it considers likely to bring the papers to their attention) and in some circumstances dispense with service altogether. You will need an affidavit setting out exactly what you did and when. The full picture is in the guide to divorcing a spouse who is missing or refuses to cooperate, and the mechanics are in serving divorce papers.

Where a spouse has been unheard of for a very long time and may have died, a different route exists (an application relating to presumption of death) but that is a separate and evidentially demanding process, not a shortcut.

New relationships and children born during the separation

Most people who separated long ago have moved on. Two consequences follow.

First, a partner you live with but have not married has very limited rights in Singapore. There is no common law marriage. Years of cohabitation do not create a claim on property, do not create maintenance obligations, and do not create inheritance rights. If you have been with someone for fifteen years and own nothing jointly, they get nothing if you die, while your legally separated spouse may get a great deal.

Second, children. A child born to a married woman is presumed in law to be her husband’s child, which means a child born during a long separation may have the wrong man recorded as the legal father. That affects the birth register, maintenance, inheritance and sometimes citizenship. The routes to fix it are covered in establishing paternity and in the guide to children born outside marriage. This is worth sorting out even if the child is now an adult, because it surfaces again at the point of inheritance.

What finally pushes people to file

Almost nobody wakes up wanting to tidy their legal status. The trigger is usually one of three things:

  1. Remarriage. You cannot remarry while still married, and the divorce must reach final judgment first. See remarrying after a divorce.
  2. Housing. An HDB purchase, a decoupling, a resale application, or a scheme that requires a clean marital status.
  3. Estate planning. A diagnosis, a parent’s death that showed what intestacy looks like, or simply reaching an age where you want your affairs to make sense. The estate planning checklist is a good starting point.

The risk of leaving it until someone dies

If you die still married, the divorce dies with you and everything reverts to succession law. Your absent spouse becomes the person with the strongest claim to administer your estate, a potential beneficiary of a large share of it, and possibly the holder of your CPF savings through an old nomination. Your children inherit a dispute with a stranger, at the worst possible moment, with legal costs coming out of the estate.

The reverse case is just as awkward. If your spouse dies first and you never divorced, you are their widow or widower, with the rights and the paperwork that go with it, which can be unwelcome as well as valuable, and can put you in the middle of their new family’s affairs.

None of this needs to be dramatic. A long-separation divorce is often uncontested, is sometimes done largely on paper, and can be paired with a fresh will and updated nominations in one go. If you want advice on your own situation, we can connect you with a licensed Singapore law practice through our contact page. The one thing worth avoiding is another decade of leaving it.

Further reading