Non-Dependent Deduction (NDD) is a UK housing allowance scheme designed to reduce the cost of housing for people who rent or own their homes. It is a form of income-related housing support available to claimants on some benefits, such as Universal Credit, Housing Benefit, and Income Support. NDD is intended to help claimants with the cost of housing by deducting the amount of income they would normally be expected to contribute to household costs from their benefits. The amount of the deduction depends on the number of non-dependents living in the same property and their income, including earned income and benefits, such as Jobseeker’s Allowance or Employment Support Allowance. The NDD is intended to ensure that the claimant’s household is not financially disadvantaged by the presence of another adult who is not a dependent or partner. It is also intended to encourage those living in households with non-dependents to take responsibility for their own housing costs. The scope of