Below are details of the amendments that were published on 4 August 2008 (see the update index for all updates).
| Section | Details of update |
| CISR41070 | Text amended to confirm tax treatment should be changed with 90 days notice |
| CISR43650 | Text amended to confirm that form C316 is issued to the contractors 55 days after the TTQT is finalised |
| CISR43680 | Text amended to confirm that form C316 is issued to the contractors 55 days after the TTQT is finalised |
| CISR43690 | Text amended to confirm that form C316 is issued to the contractors 55 days after the TTQT is finalised |
| CISR43700 | Text amended to confirm that form C316 is issued to the contractors 55 days after the TTQT is finalised |
| CISR51630 | This is a new instruction regarding the verification of a Trust subcontractor |
| CISR51640 | This instruction has moved from CISR51630 |
| CISR51650 | This instruction has moved from CISR51640 |
| CISR51660 | This instruction has moved from CISR51650 |
| CISR51670 | This instruction has moved from CISR51660 |
| CISR51680 | This instruction has moved from CISR51670 |
| CISR51690 | This instruction has moved from CISR51680 |
| CISR51700 | This instruction has moved from CISR51690 |
| CISR51710 | This instruction has moved from CISR51700 |
| CISR72130 | Text amplified to confirm the procedure where an In-year repayment claim is made by a company subcontractor who had an incorrect deduction by a contractor at the time it was made |
| CISR75020 | Text amplified to include a reference to the comparison made between the figure of deductions claimed on a self-assessment return and the figures shown by CIS |
| CISR82020 | Text amended to confirm that a period of 30 days should be allowed from the date of your warning letter to the contractor to the date a determination under Regulation 13 is made |
| CISR82030 | Text amended to confirm that a period of 30 days should be allowed from the date of your warning letter to the contractor to the date a determination under Regulation 13 is made |
| CISR82060 | Text amended to confirm that a period of 30 days should be allowed from the date of your warning letter to the contractor to the date a determination under Regulation 13 is made |
| CISR82610 | Text amended to confirm that a period of 30 days should be allowed from the date of your warning letter to the contractor to the date a determination under Regulation 13 is made |
| CISR82620 | Text amended to confirm that a period of 30 days should be allowed from the date of your warning letter to the contractor to the date a determination under Regulation 13 is made |
