Business Tax: Payable RDEC Box L125 must equal Box L105 minus the sum of Boxes L120 and L123
Article ID
business-tax-payable-rdec-box-l125-must-equal-box-l105-minus-the-sum-of-boxes-l120-and-l123
Article Name
Business Tax: Payable RDEC Box L125 must equal Box L105 minus the sum of Boxes L120 and L123
Created Date
25th May 2022
Product
Problem
IRIS Business Tax: Payable RDEC Box L125 must equal Box L105 minus the sum of Boxes L120 and L123
Resolution
If you have a RDEC Expenditure claim and it gives a payable tax credit then you generate a CT600 you get a validation: Payable RDEC Box L125 must equal Box L105 minus the sum of Boxes L120 and L123. If you try and submit and you get error 9766.
This is a defect affecting IRIS versions 22.1.0 and 22.1.2 and 22.1.4.3 and we have released a fix on August 2022 with IRIS version 22.2.0.
Once you have updated to 22.2.0 then regenerate and submit.
If you still get the L125 error on version 22.2.0, then update to 22.3 and then 23.1. If you are still getting the issue then check the CT600L form – if there are any incorrect value entries on L125, L105, L120 and L123 then it will be caused by a defect. If you need to submit it urgently then correct the values on a paper copy and then post it to HMRC. If you do need to submit it online, please email ‘support@iris.co.uk’ stating you are on 23.1 and still getting the L125 error.
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