When people think about a will, they often start with individual belongings: a ring for a daughter, a car for a friend or a fixed sum for a charity. Those gifts may be meaningful, but they do not necessarily account for everything you will own when you die.
The residue is broadly the estate left after the relevant debts, expenses, taxes and particular gifts have been dealt with. A residuary clause identifies who should receive that remaining balance. It is often one of the most important provisions in a will.
Why a list of gifts is not enough
Your assets are likely to change. You may sell a property, open a new savings account or acquire something that was not in mind when the will was written. A clear residuary gift can deal with the remaining estate without requiring you to name every account individually.
If the will leaves part of the estate undisposed of, intestacy rules may govern that part. This is known as partial intestacy. The result may differ from what you intended, even though you took the trouble to make a will.
Shares and alternatives
The residue can be left to one beneficiary or divided between several. Where shares are used, they should be clear and add up correctly. Also consider what should happen if a beneficiary dies before you. The answer should fit your family and be expressed in suitable wording.
For example, leaving the residue equally to two people raises a further question if one does not survive you. Should the other receive everything, should the deceased person's children benefit, or should someone else take that share? Do not assume that all forms answer this in the same way.
Keep the whole estate in view
Large cash gifts can reduce the residue significantly, particularly if your estate later falls in value. Think about the relationship between specific gifts and the people relying on the balance.
A residuary clause also cannot dispose of property that does not form part of your estate. Joint ownership, pensions and certain insurance arrangements need separate consideration.
Review the clause whenever your family or finances change substantially. It should express a durable plan for what remains, rather than serve as an afterthought to the more personal gifts.
Sources and further reading
General information, not advice on your individual circumstances. Laws and tax rules can change; check the linked official guidance and obtain professional advice where needed.