Tax - Overdue debt by debt age 2008–2017

Inland Revenue


Overdue tax debt: The amount of tax that remains unpaid after the due date for payment. Overdue tax debt includes any penalty and interest applied to the debt.
Overdue child support debt: The amount of an employer's or a liable parent's liability which is in arrears (due, but not paid), together with overdue receiving carer overpayments. Child support debt excludes debt Inland Revenue collect on behalf of overseas agencies. This amount includes any penalties applied to the debt. Note that only the overdue penalties component is recognised as a debt from the Crown perspective.

Definitions of terms used in this dataset can be found at

Changes to data collection/processing

The large increase in tax debt over 3 years old in 2012 was due to significant debt coming out of the litigation process and being recognised as debt in the debt book.

Data provided by

Inland Revenue

Dataset name

Tax Statistics: Overdue debt by debt age 2017


How to find the data

At URL provided, download the Excel data for 'Overdue debt by debt age 2008 to 2017'.

Import & extraction details

File as imported: Tax Statistics: Overdue debt by debt age 2017

From the dataset Tax Statistics: Overdue debt by debt age 2017, this data was extracted:

  • Sheet: 7.3-+Overdue-debt-age-csv rearr
  • Range: B5:AO19
  • Provided: 420 data points

Dataset originally released on:

December 07, 2017

About this dataset

This dataset shows the dynamics of overdue debt case age from the 2008 to 2017 financial years. It covers both overdue tax debt and overdue child support debt. The debt age structure is presented both for dollar values and debt cases. The age of each debt case is weighted based on weighted overdue debt case age. Due to rounding, the proportions may not always add to 100%.

Method of collection/Data provider

Tax statistics include only data collected by Inland Revenue.
Some numbers in the tables are rounded, which means the totals are not always consistent with the sums across the corresponding categories.
Tax statistics are dynamic and are continuously updated due to return filing processes. The data is correct as of the date of extraction.