Blended Families

August 13, 2025

What do we mean by “blended families?” blended families are those that include  

spouses with children from previous relationships. Whilst this does bring excitement  

for new beginnings and the ability to share life and experiences as a larger family, it  

can, on occasion, have the ability to cause conflicts that were not intended where  

children can be disinherited. 


What kind of issues can arise? 

You may have the situation where the spouse or partner may have already written  

their will leaving their estate to their children and since being in a new relationship,  

have not considered amending their Will to leave some provision for their new family.  

If they have married their new partner the old Will will have been revoked on  

marriage but without writing a new Will their estate would then pass in accordance  

with the laws of intestacy meaning their own children could end up being  

disinherited. 

Where someone dies without a Will and has a new partner and would have wanted  

to provide for them and their children, this will not in reality happen as their estate will  

pass in accordance with the laws of intestacy which currently does not provide for  

blended families or even unmarried partners. 

One common query we receive is where the spouse has left their assets to their new  

partner or spouse on the basis they trust their new partner or spouse to ultimately  

pass those assets to the children. However, this doesn’t always happen and the  

children can end up being disinherited. 

Here are some useful estate planning tips for blended families: 

Consider the use of a trust 

Life interest trusts can be a useful trust for blended families as they provide  

protection from sideways disinheritance whilst still providing for the spouse or partner  

during the trust period. 

This type of trust allows the life tenant to receive income from the trust and  

sometimes capital at the discretion of the trustees which would enable the life tenant  

to maintain their lifestyle. 

However, when the trust ends, either due to the life tenant’s death, remarriage or  

otherwise, the assets that are in the trust ultimately go to those beneficiaries the  

testator wanted to provide for. This can therefore ensure children from a previous  

marriage are not disinherited. 

The only point to consider with this type of trust is that it will last until the death of the  

life tenant or earlier depending on what the trust period states, which means the  

children’s inheritance will be delayed until then. 

If, however, the testator does not want to make the decision as to how to divide the  

estate but wants the family to receive financial support as and when required,  

another option is a discretionary trust. A discretionary trust enables the trustees to  

decide how and when to distribute income and capital to the beneficiaries which  

makes the trust flexible. If one of the children was doing well financially, for example,  

the trustees may decide that they do not need to provide for that child but instead to  

the other beneficiaries who do require it. The testator can also write a non-binding  

letter of wishes which can provide guidance to the trustees when managing the trust. 

Update all legal documents 

We briefly touched on this point earlier but if someone has a Will in place leaving  

their assets to someone or various people and there is a change of circumstances  

meaning they are no longer in that relationship, it is a good idea for the Will to be  

updated to reflect the testator’s up to date wishes. While divorce does not revoke a  

Will, it does treat the spouse or civil partner as having predeceased the testator.  

However, the testator may have entered into a new relationship with a partner that  

has children and may want to provide for them also. 

If someone were to die without a Will, their estate will pass in accordance with the  

laws of intestacy. If they were separated from their spouse, for example, and had a  

new partner then legally they are still married and the spouse would therefore benefit  

from the testator’s estate as the intestacy rules do not make provision for unmarried  

partners. 

As well as the Will, any LPA’s, pension and life insurance documents should be  

updated accordingly. 

Clarity 

Ensure your Will is clear about who should receive what on death. If the Will refers to  

a gift being made to the children but it was intended to benefit both the children and  

stepchildren, the Will should explicitly say this. 

It may be that the testator chooses to gift one property to the children and then the  

residuary estate to the partner and stepchildren. Again, it is very important the Will  

specifically states this. 

The testator may wish to leave a greater amount to their own children than their  

stepchildren or provide for a child that is younger or has additional needs. As long as  

this is clear in the Will this is fine and a supporting letter of wishes setting out the  

reasons for this may be advisable. 

Own the property as tenants in common 

If the home is owned as joint tenants, on death, the share of the deceased will  

automatically pass to the surviving owner meaning children can be disinherited. 

Contrast this to a property held as tenants in common. Each owner will own a share  

of the property which can gifted to whom they wish in their Will. 

Risks of a Claim 

What are the risks if someone is not financially provided for? If someone is not  

provided for, they can bring a claim under the Inheritance (Provision for Family and  

Dependants) Act 1975. However, this is limited to the following categories of people  

who can claim under the Act: – 

 Spouse/civil partner 

 Former spouse/civil partner 

 Child of his 

 Child treated as a child of his 

 Cohabitant 

 Person who is financially dependent on him. 

As you can see from the above list this does include former spouses or civil partners  

who have not remarried or since entered into a civil partnership therefore advice  

should be sought about possible claims on the estate from them. 

It is good practice, where the intention is not to benefit someone from the estate, to  

specifically exclude them in the Will and have a detailed letter of wishes setting out  

the reasons for the exclusion. This comes back to what we mentioned earlier about  

clarity. It is also worth considering whether there are any financial orders in place in  

the event of a divorce that would prevent a former spouse from claiming any further  

provision. 

Stepchildren would most likely fall within the definition of “child treated as a child of  

his” or “person who is financially dependent on him.” Therefore, specific advice and  

consideration should be sought as how to balance the provision between both the  

biological children and stepchildren to take preventative steps from stepchildren  

claiming against the estate where they aren’t being provided for at all or provided for  

in the same way as the biological children. 

Estate planning for blended families requires careful consideration so it is important  

your wishes are clearly set out to avoid any misunderstandings or conflicts after your  

death. Seek advice from an estate planner or solicitor to ensure your loved ones are  

provided for in accordance with your wishes 

 

 

 Source: SWW

By Julia Newlove January 21, 2026
More couples than ever are choosing to live together without marrying or entering a civil partnership. While this arrangement works well for many, it can create significant inheritance tax and estate planning disadvantages on death. This article explains the main IHT disadvantages unmarried couples face compared with married couples or civil partners, the pitfalls of ‘leaving everything to each other’ (including life interest trusts), and why a nil rate band discretionary trust in a will is often a better planning tool for inheritance tax planning for unmarried couples. Inheritance Tax Planning for Unmarried Couples – Disadvantages Under the Inheritance Tax Act 1984, gifts between spouses and civil partners are generally exempt from IHT (the spousal exemption). Two allowances are central to IHT: · Nil Rate Band (NRB): currently £325,000 per individual. Up to this value, the taxable estate is charged at 0%. · Residence Nil Rate Band (RNRB): an additional allowance (subject to conditions) when a qualifying main residence is inherited by the deceased’s direct descendants. The current value is £175,000. For married couples or civil partners, unused NRB and RNRB can typically be transferred to the survivor, allowing up to two sets of allowances on second death. Unmarried couples do not benefit from these rules. In practice: · Gifts on death to an unmarried partner are potentially chargeable to IHT (subject to available allowances). · There is no automatic transfer of unused IHT allowances between unmarried partners. The transferable nil rate band is designed for spouses or civil partners only. The RNRB also has a practical trap in blended unmarried families. For RNRB purposes, “direct descendants” includes children, grandchildren and certain others; it also includes stepchildren. An unmarried partner’s child is not treated as the deceased’s “direct descendant”, so a gift of part of the home to that child will fail the “closely inherited” condition and the RNRB will be unavailable over that share. This is a key consideration in inheritance tax planning for unmarried couples with children from previous relationships. Leaving Everything to Each Other A common “simple will” choice is to leave everything to the surviving partner outright on first death. For an unmarried couple, that gift is not spouse-exempt. If the estate is above the available allowances, an IHT charge will arise immediately. Even where no IHT is payable on first death (because the estate is under the NRB), the second risk is that by gifting to the partner it will be bunching assets in them and without the benefit of any transferable allowances. Life Interest Trusts and Unmarried Couples Many wills include a life interest trust, either over the whole estate or just over the property (usually referred to as a Property Protection Trust or PPT). In simple terms, the survivor may have a right to occupy a property or receive income for life, with the capital eventually passing to named beneficiaries. These trusts can achieve non-tax objectives (for example, protecting a share of a property for children from a previous relationship). However, where the survivor benefits from a life interest, the trust will be considered as an Immediate Post-Death Interest (IPDI) and the trust capital will be taxed as part of the survivor’s estate for IHT on their death. Using life interest trusts for unmarried couples will therefore suffer the same IHT disadvantages as leaving to the partner outright. Why a Nil Rate Band Discretionary Trust Can Be More Effective A nil rate band discretionary trust is a will trust designed to capture up to the value of the NRB on first death. Instead of leaving everything outright to the partner, or tying up assets in a life interest, the will directs that an amount up to the NRB passes into a discretionary trust. Key features: · As a discretionary trust, the trustees decide who benefits, when, and by how much, from a class of beneficiaries (often including the surviving partner, children and sometimes wider family). · The trust is funded up to the NRB so no IHT is payable on that slice at the first death. · A discretionary trust is relevant property, and the beneficiaries of the trust are not considered as owning the trust capital for IHT. This avoids the trust fund being taxed as part of the surviving partner’s estate on their death. · The first partner’s NRB is used rather than wasted. · Trustees can lend to the survivor, assist with housing, or distribute to children depending on needs and tax position. While discretionary trusts are subject to their own IHT regime (periodic and exit charges under the relevant property rules), a trust funded up to the NRB is commonly structured to minimise or avoid such charges. Incorporating a nil rate band discretionary trust is a therefore a useful strategy in inheritance tax planning for unmarried couples. Example Andy and Betty are an unmarried couple. Andy has an adult child, Chloe, from a previous relationship. Betty has no children. They own a home as tenants in common and have separate savings. They want to provide for each other but also leave assets to Chloe. · Andy’s estate: 50% of the home (£350,000) + savings (£150,000) = £500,000 · Betty’s estate: 50% of the home (£350,000) + savings (£150,000) = £500,000 · Total combined wealth: £1,000,000 If they were married, they could simply leave everything to each other (or in life interests) and no IHT would be due. The spousal exemption will apply on first death. On second death, two sets of NRB and RNRB would be available regardless of who dies first, as Chloe is considered as Betty’s descendant for RNRB purposes as a stepchild. This will not be the case if they die unmarried. Option 1: Everything to partner Andy dies first and leaves his estate of £500,000 outright to Betty. · Andy’s NRB: £325,000. · The gift to Betty is not spouse-exempt. · Immediate taxable amount: £500,000 – £325,000 = £175,000. · IHT at 40%: £70,000 on Andy’s death. · Betty inherits £430,000 Betty now owns £930,000. When Betty later dies, she has only her own NRB (£325,000) because Andy’s unused allowance cannot transfer. · Taxable amount: £930,000 – £325,000 = £605,000. · IHT at 40%: £242,000 Option 2: Nil rate band discretionary trust + remainder to partner Andy’s will leaves the NRB (£325,000) into a nil rate band discretionary trust (beneficiaries include Betty and Chloe), and the balance (£175,000) to Betty outright. · IHT on Andy’s death: no IHT is due on the NRB Discretionary Trust · The remaining £175,000 to Betty is taxable at 40% as before · Betty inherits £105,000 Over time, trustees can support Betty (for example, by letting her live in the property or by lending funds). Crucially, the £325,000 in the trust is not part of Betty’s estate on her death, reducing exposure to IHT on second death. Betty now owns £605,000. Assuming the estate remained that value by the time of her death, her IHT would be calculated as follows: · Taxable amount: £605,000 – £325,000 = £280,000. · IHT at 40%: £112,000. Use of a NRB Discretionary Trust leads to an IHT saving of £130,000 over inheriting outright. Marriage/Civil partnership as an Option For some unmarried couples facing an IHT liability, it may be appropriate to consider marriage or civil partnership as part of their planning. This can significantly improve the IHT outcome because the spouse/civil partner exemption can allow assets to pass to the survivor free of IHT on the first death, and the survivor can benefit from transferred nil rate band and residence nil rate band from the first to die. That said, marriage/civil partnership can have important consequences beyond tax and they may wish to seek advice on creating a prenuptial agreement if they have significant wealth from before the relationship. While nuptial agreements are not automatically binding, the courts can give them significant weight where they are freely entered into, with full appreciation of their implications, and are fair in the circumstances. Conclusion For unmarried couples, the IHT framework is less generous than for spouses and civil partners. The absence of the spouse exemption and non-transferability of allowances means that common planning such as leaving everything to a partner, or relying on a life interest/PPT, can trigger tax when spouses would avoid it. The nil rate band discretionary trust offers a flexible and more tax-friendly alternative, but its implementation requires careful consideration of the client’s circumstances. 
By Julia Newlove September 3, 2025
🛑 IMPORTANT UPDATE: Court Fees for Lasting Power of Attorney Are Rising in November 2025! 🛑 If you’ve been putting off setting up a Lasting Power of Attorney (LPA) — now is the time to act. From November 2025, the government is set to increase the court fees for registering an LPA. That means waiting could end up costing you more. At Paragon Legal Services, we specialise in making the LPA process simple, affordable, and stress-free. Whether it’s for health & welfare or property & financial affairs, we’ll guide you through every step to ensure your wishes are carries out and your loved ones are empowered to act on your behalf if needed. ✅ Secure your LPA now before OPG fees rise ✅ Gain peace of mind for you and your family 📆 Don’t leave it too late. Appointments are filling fast as more people act before the deadline. 📞 Call us today on 01206 544919 or 0800 0747642 to book your free consultation. Act now. Protect your future. Save money. 
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