AIO supplement

If you share a house with one or more co-residents

If you live on your own, you will receive the standard amount for a person living alone. If you live with your partner and no-one else, you will receive the standard amount for a person living with a partner. However, if someone else aged 21 or over is living at your address who is not your partner, your AIO supplement may be reduced.

The co-resident rule: how does it work?

Apart from your income and assets, we also take account of any other persons aged 21 or over living in your house who are not your partner. If so, it is likely that they will contribute towards the household expenses. We refer to such people as co-residents. Your AIO supplement will be reduced for each co-resident living at your address.

  • What do we mean by "co-resident"?
    • Anyone except for a partner can be a co-resident, including your child, father or mother.
    • It makes no difference whether they actually contribute towards the household costs.
    • We only take your own income and, if applicable, your partner's income into account when calculating the amount of your AIO supplement. We do not take account of income received by co-residents.
  • When is a person not regarded as a co-resident?

    You do not have a co-resident if:

    • someone is living at your address but they are studying or training, and they qualify for a student grant or loan
    • you are in a 'commercial relationship'. This means that:
      - you rent a room from someone, or
      - you are a lodger, or
      - someone rents a room in your home, or
      - you have a lodger.
      If you have a commercial relationship with someone, you will have to provide proof in the form of a written agreement, as well as proof that rent has been paid. You cannot have a commercial relationship with your child, grandchild, father, mother, brother or sister. However, it is possible to have a commercial relationship with your cousin, niece or nephew, or your uncle or aunt.
  • Reductions to your AIO supplement under the co-resident rule

    The more people there are living at your address, the lower the AIO supplement you will receive. We calculate the reduction to your supplement as follows:

    (40% + number of co-residents x 30%) divided by number of co-residents x standard amount. The number of co-residents includes you and your partner, if applicable.

    You are a single person living at the same address as two other adults aged 21 or over who are co-residents. The standard amount applicable to you is (40% + 3 x 30%) = 130% divided by 3 = 43.33%.
    Your standard amount is therefore 43.33% x € 1,499.56 = € 649.76.
    The number 3 signifies one single person and 2 other persons who are co-residents living at your address.