Child Disability Payment decision making guide

Ignorance of a material fact

What is ignorance of a material fact?

Ignorance of a material fact is not an error.

This guidance only applies where:

  • there has been a determination that has been incorrect
  • this has led to an underpayment
  • but was not caused by official error.

A determination made in ignorance of a material fact covers instances where all of the following apply:

  • a determination was made correctly at the time based on the information held
  • the information held at the time was accurate
  • other information comes to light later which would have resulted in an alternative outcome.

An alternative outcome is one that:

  • results an alteration to the component or rate of CDP the individual is entitled to, or
  • means individual is no longer entitled to CDP (CDP Regs, reg. 31(a)).

A material fact is therefore one that would make a difference to the level of CDP that the individual is entitled to(CIS/3655/2007 at para. 40).

The fact must exist at the time the original determination is made.

Opinions should be distinguished from facts. There is a difference between a decision made on an incorrect factual basis (which would trigger a determination without application) and one which someone else looking at the same factual basis thinks should have led to a different outcome (which would not trigger a determination without application) (CDLA/2160/03 at para. 11).

Correcting a determination made in ignorance of a material fact

A case manager must carry out an unscheduled review (legally known as a determination without application) when both:

  • a previous determination was made in ignorance of a material fact
  • the material fact being known either:
    • may result in an alteration to the component or rate of Child Disability Payment the individual is entitled to, or
    • is likely to mean that the individual is no longer entitled to Child Disability Payment (CDP Regs, reg. 31(a)).

Completing a determination without application involves correcting previous determinations in order to work out the individual’s correct entitlement to CDP. This involves both:

  • consideration of all entitlement criteria, including applying the backwards and forwards test
  • working out when the change in entitlement should begin.

This should be approached as if making a determination for the first time with full consideration given to the relevant chapters of the DMG.

When increase in entitlement begins

The increase in entitlement begins on the date of the new determination (CDP Regs, reg. 28(1)(b)(ii)) where all of the following apply:

  • the original determination was made in ignorance of a material fact
  • the individual is now entitled to a higher award as a result of the new determination
  • the individual has been underpaid as a result.

A case manager may fix an earlier date for entitlement to begin from if, in all the circumstances, it would be unjust not to do so (CDP Regs, reg. 28(2)). In other words, the case manager may fix an earlier date if fairness requires it.

Case managers should seek advice if they think there are special circumstances that justify fixing an earlier start date.

The individual will be paid the difference between any CDP already paid under the original determination and any CDP due under the new determination (if both determinations relate to the same period of time) (CDP Regs, reg. 28(2A))

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