Conclusion:
[160] The Court should adopt the following guideline applicable to offences against State laws:
(i) A sentencing judge should explicitly state that a plea of guilty has been taken into account. Failure to do so will generally be taken to indicate that the plea was not given weight.
(ii) Sentencing judges are encouraged to quantify the effect of the plea on the sentence in so far as they believe it appropriate to do so. This effect can encompass any or all of the matters to which the plea may be relevant - contrition, witness vulnerability and utilitarian value - but particular encouragement is given to the quantification of the last-mentioned matter. Where other matters are regarded as appropriate to be quantified in a particular case, for example, assistance to authorities, a single combined quantification will often be appropriate.
(iii) The utilitarian value of a plea to the criminal justice system should generally be assessed in the range of 10-25 per cent discount on sentence. The primary consideration determining where in the range a particular case should fall, is the timing of the plea. What is to be regarded as an early plea will vary according to the circumstances of the case and is a matter for determination by the sentencing judge.
(iv) In some cases the plea, in combination with other relevant factors, will change the nature of the sentence imposed. In some cases a plea will not lead to any discount.
51 In Environmental Protection Authority v Hochtief AG [2006] NSWLEC 200 at [83] I said:
Generally, the timing of a plea of guilty is the primary consideration determining the utilitarian benefit of a guilty plea and, therefore, where in the discount range a particular case should fall. But it is not the only consideration. Other considerations are complexity of issues; difficulty in assembling evidence; and the potential length and complexity of a fully contested trial. In the present case these other considerations do not seem to be as weighty as in some other criminal cases, including criminal cases outside the jurisdiction of this Court.
52 The last comment also applies, I think, to the present case. However, since the prosecutor and the defendant both submitted that there should be a full 25 percent discount for the early plea of guilty and as the matter has not been fully argued, I am prepared to accede to that submission.