If you do need to submit a super-deduction and/or 50% first-year allowance (SR allowance) claim or report a balancing charge online before April 2022, it is possible to do this utilising existing capital allowances boxes. For CT600, boxes 725 and 750 can be used for claim amounts, boxes 730 and 755 can be used to report balancing charges and box 775 can be used for qualifying expenditure until the online service has been updated and new boxes are available