Naming a Guardian Who Can't Afford to Say Yes

Naming your sister as the guardian for your children is the easy half. It is a box on a will, a conversation over a cup of tea, a decision that feels like the responsible thing — and it is. But it answers the question "who will love them" while quietly leaving the harder one untouched: if you die, could she actually afford to take your children in? Working out how to pay for a guardian to look after your children is the part almost nobody plans, and it is the part that decides whether the arrangement holds.

Because here is what naming a guardian does not do. It does not give her any money. It does not make the state pay her to raise your children. It does not add a room to her house or make up the income she loses when she cuts her hours. She inherits the responsibility and, unless you have thought about it, none of the means to carry it. A guardian who has to say "I can't, financially" is worse than no plan at all, because it comes as a shock at the exact moment the children need certainty.

This page costs the guardian's side of the arrangement honestly, then shows why a monthly income — rather than a single round lump sum — usually maps better onto the way those costs actually land.

The short answer: naming is the easy half

A guardian is the person who takes on the day-to-day care of your children if you die and there is no surviving parent with parental responsibility to do it. Appointing one in your will is genuinely important — without it, the decision about who raises your children can fall to a court that never met you. But an appointment is an instruction about care, not a transfer of funds. The law hands your sister the children; it does not hand her the money to raise them.

It is also worth being clear about when the appointment even takes effect. A guardian named in your will steps in where there is no other parent holding parental responsibility. If the children's other parent is alive and has parental responsibility, they will usually be the ones the children go to, whatever your will says — so a guardianship appointment is most relevant to sole carers, or to couples planning for the possibility that both of them die. Assuming your appointment is the one that will bite, the question becomes entirely practical: what would it cost her, and where does that come from?

What a guardian actually gets from the state

Less than people expect, and almost none of it as of right for the job itself.

A guardian can usually claim Child Benefit for a child they are responsible for, and depending on their own income and circumstances they may qualify for means-tested support such as Universal Credit. There is also a specific benefit, Guardian's Allowance, paid on top of Child Benefit to someone bringing up a child whose parents have died — but its conditions are narrow. Broadly, both parents must have died, or one must have died with the other unable to be found or to care for the child, so a great many guardians never qualify for it at all.

Source: gov.uk, Guardian's Allowance and Child Benefit eligibility guidance.

The point of listing these is not that they are worthless — they help. It is that none of them is designed to fund the raising of someone else's children, and none replaces the income and space that doing so demands. What sits above that floor has to come from you: from your estate, from a trust, or from a life policy arranged for the purpose.

Costing the guardian's side

Most estimates of "what a child costs" measure it from the parents' point of view, inside a household already built around the child. A guardian's costs are different and larger, because everything has to be added to a household that was not built around your children at all. Set against your sister's existing life, the arrangement can require:

• A bigger home. Two or three extra children rarely fit the house she already has. That can mean moving, extending, or converting — the single largest cost, and the one most likely to force a decision she cannot make.
• Dropped working hours. Someone has to be there for the school run, the illnesses, the settling-in. Reduced hours mean reduced income, on top of the extra mouths to feed — a squeeze from both directions at once.
• Childcare. Where she keeps working, wraparound care, holiday clubs and nursery fees for younger children arrive immediately and do not stop for years.
• The ordinary years. Food, clothes, uniforms, school trips, activities, transport, and the holidays that keep grieving children feeling like children. Multiplied across every year until the youngest finishes education.

Where your children would live is bound up in this. If your own home passes to them, whether the guardian can move in and keep it running turns on how the property was owned and what debt sits on it — the difference between the two forms of joint ownership is set out in joint tenants or tenants in common. If the plan is for the children to move into the guardian's home and she rents from a housing association, whether that tenancy can even accommodate them is its own question, covered in succeeding to a housing association tenancy. And if you are not on the deeds of the home your children live in now, start with not on the deeds, what happens if my partner dies.

A lump sum, or a monthly income?

The instinct is to leave a big round number — a lump sum that feels generous and final. It can work, but it carries two weaknesses. A lump sum has to be managed and made to last across a decade or more, which is a real skill and a real risk; and it can be spent early, unwisely, or absorbed by the wrong pressures, leaving nothing for the later years when teenagers are at their most expensive.

Family income benefit is the shape built for exactly this. Instead of paying a single sum on death, it pays a set amount every month for the rest of the policy term — so if you died five years into a twenty-year policy, it would pay a monthly income for the remaining fifteen. That maps directly onto how the costs of raising children actually arrive: not as one enormous bill, but as rent, food, uniforms and childcare, term after term, month after month. It hands the guardian a predictable income to run a household on, rather than a large sum to steward. Because the need naturally shortens as the children grow, income cover of this kind is designed to run down alongside it.

There is a further reason the monthly shape helps a guardian specifically. Your sister is not starting a blank household on your children's behalf; she is folding them into a life that already has its own bills, and quite possibly her own children, to run. A predictable income that lands every month sits alongside her existing budget in a way she can plan around — topping up the rent, covering the larger food shop, paying the childminder — without her having to become the manager of a large capital sum on top of everything else she has just taken on. In the raw first year after a death, that simplicity is worth more than it looks, and it is the difference between a guardian who copes and one who is quietly overwhelmed.

The chance of a parent of young children dying before they are grown is small in any single year but far from negligible across the fifteen or twenty years a family income policy is meant to span — which is precisely the period it covers.

Source: Office for National Statistics, National life tables, UK: 1980–1982 to 2022–2024, published under the Open Government Licence v3.0.

How to work out the amount

The most useful thing you can do is replace the round number with a real one, built from the ground up. The method is simple:

1. Start with what your children cost you now — a monthly figure for their share of housing, food, clothing, childcare and activities.
2. Add what changes for the guardian: the larger home, the working hours she would give up, the childcare she would have to buy that you provide for free, the travel and the holidays.
3. Subtract what the state genuinely provides in her hands — Child Benefit, and any support she would qualify for — rather than assuming either extreme.
4. Set the result against the number of years until your youngest finishes education. That span is the term; the monthly figure is the income to insure.

That resulting figure — specific to your children, your sister and your years — is a far better basis than a headline sum plucked from an advert. It is also honest about its own limits: if the arrangement depends on your sister herself, it is worth remembering she is now a carer too, and what happens if she were to die is the subject of the carer who dies first.

Putting the cover in place

Once you have the monthly figure and the term, the cover itself is the straightforward part. A family income benefit policy can be written to pay that income, and writing it in trust means the money reaches the guardian — or trustees acting for the children — directly and quickly, without being held up by probate or falling into the estate to be fought over.

What such a policy would cost, and whether an insurer will offer it, depends on your age, your health and an insurer's underwriting, so it is not something to guess at. An FCA-authorised broker can price it against the figure you have worked out and explain how the trust is set up; you can get life insurance quotes as a starting point. We do not publish premiums here, because the only meaningful number is the one calculated for you. For the wider set of decisions a single parent or an unusual family shape has to make, our guide to dependants and unusual family shapes gathers them in one place.

Frequently asked questions

Does a guardian get any money to raise my children?

Not from the state as of right. A guardian may claim Child Benefit and may qualify for means-tested support, and Guardian's Allowance exists but only where a child's parents have died and its narrow conditions are met. Nothing arrives simply because someone was named in a will. Anything beyond that floor has to come from your estate, from a trust, or from a life policy arranged for the purpose.

Should I leave a lump sum or a monthly income?

A lump sum has to last and be managed, and it can be spent early or badly. Family income benefit pays a set amount each month for the rest of the policy term, which maps onto how the costs actually arrive: rent, food, uniforms and childcare, term after term. For many families that predictability suits a guardian better than a single large sum to steward.

How do I work out the amount?

Add what your children cost you now, then add what changes for the guardian: a larger home, reduced working hours, childcare, travel and holidays. Subtract what the state genuinely provides, and set the result against the years until your youngest finishes education. The resulting figure, rather than a round number, is the sum to insure.