Proving You Were Their Partner: What Trustees Ask For

If you were living with someone who has died and you were not married to them, a pension scheme will not simply take your word that you were partners. It will ask you to prove it. Understanding what evidence pension trustees need to prove a partner, before you are asked for it, is the difference between a claim that goes through and one that stalls for months at the worst possible time.

The phrase that governs this is "financial interdependence", and it sounds abstract until you realise it has to be shown on paper. Trustees decide these claims on documents — the tenancy, the bills, the bank statements, the letters that arrived at your shared address — not on how much you loved each other. The good news is that the documents they want are ordinary things most couples already have. The hard part is gathering them into a clear picture at a moment when you are grieving and half your paperwork may have been in the other person's name.

This page turns "financial interdependence" into a concrete checklist, drawn from how these death benefit disputes are actually decided when they go wrong. If you assemble the evidence in the way trustees are looking for it, most straightforward cases are paid without a fight.

The short answer: interdependence has to be evidenced

A married spouse or civil partner rarely has to prove anything beyond the marriage or civil partnership certificate. The relationship is a matter of public record, so the scheme accepts it and moves on. A cohabiting partner has no equivalent certificate, so the scheme substitutes evidence for it, and the burden of producing that evidence falls on you.

What the trustees are trying to establish is that your relationship met whatever definition their scheme uses for a qualifying partner. That almost always comes down to two things: that you lived together as if you were married or civil partners, and that your finances were dependent on each other or interdependent. Both of those are proven with paper, and the more of it that covers the same address over the same stretch of time, the stronger the claim.

The tests a scheme usually applies

Before you gather anything, ask the administrator for the scheme's actual rules on partner benefits in writing, because the tests vary and you want to aim your evidence at the right target. That said, most schemes apply some combination of three conditions.

• A minimum period of cohabitation. Commonly two years of living together immediately before the death, though some schemes ask for longer and a few for less. The word "immediately" matters — a gap where you lived apart can break the period even if you got back together.
• Free to marry each other. Many schemes require that neither of you was married to, or in a civil partnership with, someone else during the qualifying period. A partner who never divorced a previous spouse can fail this test even in a long and genuine relationship.
• Financial dependence or interdependence. Either that you relied on the deceased financially, or that your finances were bound up together. This is the condition that the evidence list below is really aimed at.

Some schemes also ask whether a nomination or expression of wish form was completed. Following the Brewster case in the Supreme Court, public service schemes across the UK removed the requirement to have nominated a cohabiting partner as a precondition of entitlement, but a completed form is still useful proof of the relationship, so its absence is a gap to explain rather than a reason to give up.

The evidence list: same period, same address

This is the core of it. Trustees are persuaded by documents that independently confirm you lived together and ran your lives together, and they give most weight to records that overlap in time and place. Gather as many of these as apply, ideally spanning the qualifying period rather than a single month.

• A joint tenancy agreement or a mortgage in both names, showing you were both committed to the same home.
• Council tax bills naming both of you at the address, which are particularly persuasive because they are official and hard to arrange artificially.
• Utility accounts — gas, electricity, water, broadband — in joint names or in each of your names at the same address.
• Joint bank or building society statements, or statements from separate accounts showing shared standing orders and household spending.
• Evidence of shared outgoings: childcare paid between you, household costs split, a joint loan or a car bought together, insurance policies naming each other.
• Correspondence addressed to you both, or to each of you at the shared address, from banks, employers, the NHS, HMRC or the local authority.
• A will naming you, a life policy written for your benefit, or a nomination form, all of which show the deceased treated you as their partner.
• Identity documents and official records showing the same home address for both of you — driving licences, the electoral roll, GP registration.

No single one of these is decisive on its own. What convinces trustees is the weight of several independent documents pointing the same way over the same period. Photographs and letters from friends can add colour, but they carry far less weight than a council tax bill, so lead with the official paper.

What "financial interdependence" actually means

People trip over this phrase because they assume it means one partner was financially dependent on the other, and worry that two working adults with their own incomes will not qualify. Interdependence is the broader idea. It means your finances were genuinely intertwined — you shared the responsibility for running a home, you had joint commitments, you relied on both incomes to meet the outgoings — even if neither of you was dependent on the other in the old-fashioned sense.

So a couple who each earned, kept some separate accounts, but jointly paid a mortgage, split the bills and shared a car are usually interdependent. A lodger and a landlord who happened to share a kitchen are not. The evidence you assemble is really there to place you clearly in the first group. Where one of you did depend on the other — you gave up work to care for children, say — that dependence is simpler still to show and sits comfortably inside the same test.

What weakens a claim, and how to answer it

It helps to know in advance where these claims run into trouble, because most weaknesses can be addressed if you see them coming. Entirely separate finances, with nothing held or paid jointly, is the commonest problem — answer it by pulling together whatever shared spending did exist, even standing orders between two solo accounts. A short or broken period of living together is another — be honest about the dates and provide address evidence for as much of the period as you can. Still being legally married to a previous spouse can defeat a claim outright under some rules, so raise it early rather than letting it surface later.

Timing is a practical enemy too. Bereavement benefits and pension death benefits both often turn on proving a relationship after the person is gone, when the easiest witness is no longer there — a difficulty that runs right through this territory, as in proving you were pregnant when a partner died, months after the event. The lesson is the same in every case: gather and keep the ordinary paperwork while it is easy, because it is extraordinarily hard to reconstruct later.

If you have also been asked to prove the relationship to the DWP for a means-tested claim, the evidence overlaps almost entirely, and it is worth preparing one bundle that serves both. We set out that parallel exercise in the evidence that wins a cohabitation reconsideration, and much of it is exactly what a pension scheme will accept.

If the scheme refuses your claim

A refusal is not the end. Every occupational scheme has an internal dispute resolution procedure, and that is the first formal step. Use it to set out your evidence point by point against the exact wording of the scheme rules — not "we were clearly partners", but "the rule requires two years of cohabitation and these council tax bills, this tenancy and these joint statements cover that period". Precision against the rule is what wins at this stage.

If the internal procedure fails, you can complain to the Pensions Ombudsman, which is free to use and decides cases on the documents rather than at a hearing. Its published determinations are, in effect, a library of how these partner disputes are resolved, and they repay reading before you frame your own case. For a plain-English guide to the steps, the government-backed MoneyHelper service explains the pensions complaints route, and Citizens Advice can help you organise the evidence. None of them charges you.

It is also worth understanding what is actually at stake, because that shapes how hard the claim is worth fighting. Depending on the scheme it might be a survivor's income for life, a lump sum, or a share of an unused pot — and after April 2027 an unused pot carries its own inheritance tax questions, which we cover in whether to spend a pension before the April 2027 change. Where the benefit was an annuity rather than a pot, there may be less to claim than you expect, as we explain in a single-life annuity that pays nothing on an early death. Knowing the prize helps you judge the effort.

If proving a partnership after the event looks daunting, it is also a reason to make sure the people who depend on you now would not face the same fight. You can get life insurance quotes and have an FCA-authorised broker arrange cover written in trust for a named partner, which pays them directly and sidesteps the whole question of proving the relationship to a scheme.

Scotland and Northern Ireland

The approach is broadly the same across the UK. Cohabiting partners can qualify for survivor benefits in the major public service schemes throughout Great Britain and Northern Ireland, and the evidence trustees look for — shared address, shared finances, a qualifying period — does not change from one nation to the next. The Pensions Ombudsman covers the whole of the UK.

It is worth remembering that the case which forced schemes to drop the nomination requirement for cohabiting partners, brought by Denise Brewster, came out of the local government scheme in Northern Ireland, and its effect was felt in public service schemes across the UK. Individual scheme rules still differ in their detail, so the constant advice holds: ask for your particular scheme's rules in writing and aim your evidence at what they actually require.

Frequently asked questions

What counts as proof that we lived together as partners?

Trustees look for documents covering the same period and the same address: a joint tenancy or mortgage, council tax bills, utility accounts, joint bank statements, and letters sent to you both. They also weigh a will, a nomination form and evidence of shared outgoings such as childcare or household costs. No single document is decisive, but several independent records pointing the same way over the qualifying period usually are.

How long do we have to have lived together?

Many schemes set a minimum period, commonly two years of cohabitation immediately before the death, and some also require that neither of you was married to anybody else during that time. The exact test sits in the scheme rules, so ask for those in writing rather than relying on a general figure, and be ready to show address evidence spanning the whole period rather than a single month.

What can I do if the scheme refuses my claim?

Use the scheme's internal dispute resolution procedure first, setting out your evidence point by point against the wording of the rules. If that fails you can complain to the Pensions Ombudsman, which is free to use and decides cases on the documents. MoneyHelper can explain the steps involved, and Citizens Advice can help you organise the paperwork, neither of which will cost you anything.