Spousal Bypass Trust: Pension Death Benefit Planning 2026/27

The problem a spousal bypass trust solves

Under current rules, most defined contribution pension funds sit outside the deceased member's own estate for Inheritance Tax purposes. Many people therefore nominate their spouse or civil partner to receive their pension death benefits directly. But this creates a second-generation problem: once the money is paid to the surviving spouse, it becomes part of their personal estate, potentially pushing their own future estate above the nil rate band and creating an Inheritance Tax liability when they, in turn, die — particularly if the spouse does not need to spend the money and it simply sits in their bank account or investments, visibly part of their estate.

A spousal bypass trust is designed to avoid this by directing pension death benefits into a discretionary trust instead of paying them straight to the surviving spouse, so the money does not automatically become part of the spouse's own estate.

How it works in practice

1. The pension scheme member sets up a discretionary trust (the spousal bypass trust) during their lifetime, or the trust is created at the point death benefits become payable, with a class of potential beneficiaries that typically includes the surviving spouse, children, and sometimes grandchildren.
2. On the member's death, the pension scheme trustees pay the lump sum death benefit into this trust, rather than directly to the spouse, following the member's expression of wishes.
3. The trustees of the spousal bypass trust — who may include the surviving spouse alongside other trusted individuals — then have discretion over how to use the money for the benefit of the beneficiaries, which can include making interest-free loans to the surviving spouse for living expenses, rather than an outright transfer.

Because the money remains within the trust structure rather than being gifted outright to the spouse, it does not form part of the spouse's own estate for Inheritance Tax purposes when they later die — any outstanding loan balance owed to the trust by the spouse is technically a debt reducing their estate, not an asset increasing it.

Why access is not lost

A common concern is that using a trust removes the surviving spouse's practical access to the money. In a typical spousal bypass trust arrangement, this is not the case: the spouse is usually named as one of the discretionary beneficiaries, and the trustees (who often include the spouse themselves, alongside other family members or professional trustees) can choose to lend or distribute funds to them whenever needed. The structure is designed to give practical flexibility of access while achieving the tax-planning goal of keeping the capital outside the spouse's own estate.

Ongoing tax treatment within the trust

Once pension death benefits sit inside a spousal bypass trust, the money is generally subject to the same rules as any other discretionary trust:

• Income tax: income generated within the trust is generally taxed at the trust rate (45% for most income types), though distributions to beneficiaries may allow some of this tax to be reclaimed depending on the beneficiary's own tax position.
• Inheritance Tax: the trust itself can be subject to ten-year anniversary charges and exit charges when capital leaves the trust, in the same way as other discretionary trusts, though these charges are generally far lower than a full 40% estate tax charge would be.

The impact of the incoming pension Inheritance Tax changes

From April 2027, most unused pension funds and death benefits are expected to come within the scope of Inheritance Tax for the first time, a significant departure from the current outside-the-estate treatment that spousal bypass trust planning has traditionally relied on. This does not necessarily make spousal bypass trusts pointless, but it does mean the interaction between the pension scheme's own Inheritance Tax treatment and a receiving trust's tax treatment needs to be carefully reassessed, since the change alters the starting assumption that pension wealth automatically avoids Inheritance Tax exposure before it even reaches a trust or a spouse.

Practical takeaway

Spousal bypass trusts remain a genuine and long-used estate-planning tool for pension death benefits, but they involve real ongoing administrative complexity and cost (trustee duties, tax filings, periodic charge calculations) that need to be weighed against the benefit for any specific family's circumstances. Given the scale of the upcoming April 2027 change to how pensions are treated for Inheritance Tax, anyone with an existing or planned spousal bypass trust arrangement should review it with a professional adviser rather than assuming it will continue to work exactly as originally designed.