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Publication, Part of

Psychological Therapies: reports on the use of IAPT services, England April 2021 Final including reports on the IAPT pilots

Official statistics, Experimental statistics

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Waiting Times

One of the stated targets of the IAPT programme is that for referrals finishing a course of treatment in the month, 75% enter treatment within 6 weeks, and 95% within 18 weeks5. These are based on the waiting time between the referral date and the first attended treatment appointment.

92.4% of referrals waited less than 6 weeks to enter treatment

Calculating Waiting Times

In April 2021, this calculation is performed as follows: 


(Count_FirstTreatment6WeeksFinishedCourseTreatment / Count_FinishedCourseTreatment) * 100


(55,697 / 60,282) * 100 = 92.4%


Sub-national waiting times rates are published in the Monthly Activity Data File as columns ‘Percentage_FirstTreatment6WeeksFinishedCourseTreatment’ and ‘Percentage_FirstTreatment18WeeksFinishedCourseTreatment’.

The chart below shows that, nationally, waiting times measures have consistently been above the target, particularly the proportion seen within 6 weeks.

For an explanation of the terms used and further information about how measures are calculated in IAPT see the 'Guide to IAPT data and publications' at



5See p16-17 of The Mandate: A mandate from the Government to NHS England: April 2015 to March 2016, available at:

Last edited: 20 July 2021 8:36 am