Pre-Marital Pensions & Divorce: Can My Spouse Claim Against My Pension’s Growth?

You may have spent twenty years building a pension before meeting your spouse only to discover during divorce negotiations that its value is being discussed as part of the settlement. Your first reaction might be that those savings should be kept separate from financial negotiations as they were acquired before the marriage. However, the other party may have expected to share retirement and may now be facing later life with very little pension of their own.

What does the case of BS v HC tell us?

In the recent case of BS v HC [2026] EWFC 20 (B), the court considered a substantial pension with roots largely preceding the marriage of approximately fifteen years. Its history involved a defined benefit scheme, employer funding and a later transfer into a self-invested personal pension.

The judge broadly treated 55% of the husband’s pensions as matrimonial and 45% as non-matrimonial, resulting in a pension sharing order of 27.5%. The non-pension assets were divided equally. The wife’s needs were then assessed separately, with the judge concluding they did not justify provision exceeding the sharing outcome set out above. This case provides useful guidance rather than a binding formula for every divorce.

What if contributions continued during the marriage?

Payments from earnings during the marriage will generally strengthen the case that part of the pension reflects the couple’s matrimonial partnership. For example, suppose a spouse entered the marriage with an established pension and continued contributing for another twelve years. It would be difficult to assess the whole arrangement fairly by treating it as an untouched pre-marital asset. Equally, identifying those later contributions does not automatically settle how the earlier fund and its growth should be treated.

The nature of the scheme matters, and with a defined contribution pension, the exercise may involve tracing contributions and investment returns. A defined benefit pension promises benefits under the scheme’s rules, so a simple comparison of money paid in can give an incomplete picture.

Can substantial growth still be passive?

A pension may grow significantly during a marriage even if no further contributions are made. This is often described as passive growth, where the increase comes from investment returns rather than additional payments into the pension. However, the fact that its value rose during the marriage does not automatically mean that the increase must be shared equally.

The court will consider what caused the growth, alongside the financial circumstances of both spouses. Where there is enough money to meet their respective needs, there may be a stronger argument for keeping the pre-marital pension and its passive growth outside the assets shared on divorce.

The position can be different if the other spouse has little retirement provision and the remaining assets cannot provide enough income. In those circumstances, the court may need to draw on the pension to achieve a fair settlement, despite its pre-marital origins.

Does a longer marriage change the position?

After a long marriage, the practical consequences of the couple’s arrangements often become more significant. Someone who reduced their working hours many years ago may have limited opportunities to replace the pension savings they missed.

Nevertheless, the passage of time does not automatically turn every pre-marital pension into an equally shared asset. The court must examine the circumstances, including how the couple treated their resources.

Cohabitation that led seamlessly into marriage can be included when assessing the relationship period, so using the marriage certificate as the unquestioned starting point may produce a misleading calculation.

What if my spouse has little or no pension?

A large pension imbalance should prompt a careful assessment of future income. It does not necessarily produce a 50/50 division, but neither can it safely be dismissed because the larger pension started before the marriage.

The Pension Advisory Group’s guidance emphasises that, in needs-based cases, the court can draw on assets acquired outside the marriage. Separating out pre-marital pension rights is therefore rarely appropriate where doing so would prevent needs being met.

What difference do children make?

When exercising its financial remedy powers, the court gives first consideration to the welfare of any child of the family under eighteen. Housing arrangements may therefore have a substantial effect on how the available capital is distributed.

Children can also influence pension provision through the choices their parents made during the relationship. A parent who worked part-time to provide care may have a smaller pension because of an arrangement that benefited the family.

Why do age and retirement plans matter?

The same pension division can have very different consequences for someone aged forty and someone already approaching retirement. The younger person may have years in which to build further provision, although their actual earning capacity must also be considered. The older person may have little realistic opportunity to close a shortfall.

Access to benefits matters too; an age gap can mean one spouse needs income before the other expects to retire, while drawing benefits earlier may reduce the income available.

What evidence should you gather?

Start with statements from around the beginning of cohabitation and the marriage, and ask the pension provider whether it retains historical valuations or records of benefits accrued at those dates; contribution records can also help establish what was paid during the relationship.

In addition, transfer documents can be valuable where an old workplace pension moved into a personal pension because the present account alone may reveal little about its origins.

For a defined benefit scheme, evidence of pensionable service and salary history may help a pensions expert. Any earlier divorce order affecting the pension should also be disclosed so that the calculations reflect what actually remained.

Missing records do not necessarily defeat an argument that a pension should be ring-fenced, but they may require reconstruction. A current cash equivalent valuation is a useful starting point, rather than a complete explanation of the pension’s history.

Ultimately, protecting a pre-marital pension requires more than pointing to the date it began. A fair settlement needs to account for how the benefits developed and what both spouses will reasonably need in retirement.