COM80091 - Interest: how interest is calculated: quarterly instalments - anti-avoidance provisions (Action Guide)
To raise a debit interest (Word 31KB) charge for a quarterly instalment payment (Word 42KB) anti-avoidance case consider steps 1 - 10 below
1. |
Use function DAPD (Display AP Details) to check that the Quarterly Instalment Payment signal is set to ‘Y’. Where it isn’t contact the Inspector and ask them to set the signal |
2. |
Use function RAPP (Revise AP Details) to set the Credit / debit interest indicator (CDII) (Word 29KB) to ‘Y’ |
3. |
Use function DINT (Display Interest Computation) to view the current Credit / Debit Interest calculation. You may wish to take a print of the calculation |
4. |
Locate an accrual where debit interest has been calculated |
5. |
Using a calculator (COTAX is unable to perform this calculation) |
|
|
|
|
Interest accrued |
X |
100 |
X |
366 |
--------------------- |
|
|
|
-------------- |
Rate of Interest |
|
|
|
No of days |
6. |
Use function CINT (Compute Interest) to check that the new ‘Computation amount’ will give the correct answer to include the anti-avoidance charge |
7. |
If the calculation does not give the correct result check the calculation. If the result is still incorrect use another accrual where debit interest has been calculated and do the calculation again |
8. |
Where the correct result still cannot be reached contact the COTAX Business HelpDesk (This text has been withheld because of exemptions in the Freedom of Information Act 2000) for advice |
9. |
Where the calculation gives the correct result use the new ‘computation amount’ in function RMIC (Raise Manual Interest Charge) to amend the debit interest charge |
10. |
Advise the Inspector that the charge has been raised |

