Guidance

Changes and issues affecting the Corporation Tax online service

Find out how changes and issues may affect the way you should file your Company Tax Return.

Super-deductionService andissues

Annual 50%investment first-year allowances

allowance

BetweenThe 1Autumn AprilBudget 2021 andextended 31the Marchannual 2023,investment companiesallowance canprovisional claim£1 themillion newcap capitaluntil allowances31 forMarch qualifying2023. expenditureThe onextension newof plantthe andtemporary machinery.

Find£1 outmillion morecap aboutwas theoriginally newdue temporaryto taxrevert reliefsto £200,000 on capital1 assetJanuary investments2022, frombut this will now happen on 1 April 2021.2023.

The Corporation Tax online service will not be updated to supportreflect thethis newchange allowancesby until30 AprilJune 2022. IfYou can file online before the service is updated if you’re filing a return and you do not need to reportclaim thesethis newadditional reliefs,annual continueinvestment allowance.

Loans to fileparticipators

The onlineAutumn inBudget 2021 raised the normalrate wayof untiltax thecharged serviceunder issection updated.455 on loans to participators from 32.5% to 33.75% from 6 April 2022.

If

The youCorporation needTax online service will be updated to reportreflect athis super-deduction,change 50%by first-year30 allowanceJune or2022. balancingYou chargecan file online before Aprilthe 2022

Youservice canis updated if you’re filing a return and you do thisnot usingneed existingto capitalreport allowancesthis boxes.increase.

For

Research CT600:

and Development claims

  • boxes

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    • boxResearch 775and canDevelopment be used for qualifying expenditure credit

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    Ifform yourand companyjust usesuse thebox HMRC660 freeon filingthe serviceCT600 andto youreport wanttheir claim.

    Due to claima recent update to the newCT600 super-deduction

    Youand mustCT600L waitforms, untilHMRC theare serviceaware isthat updateda beforesmall younumber fileof yourcustomers Companymay Taxhave Return.

    Ifonline youfiling urgentlyissues needdue to filesome beforerestrictions Aprilwithin 2022,the contactrevised HMRC. Corporation Tax online service.

    Freeports:

    Companies enhancedclaiming StructuresResearch and BuildingsDevelopment Allowance

    Companiesenhanced canexpenditure, usebut thisnot enhancedSME ratepayable oftax Structurescredit or Research and BuildingsDevelopment Allowanceexpenditure tocredit

    Customers claimwill foronly capitalbe constructionaffected costs.if Thisboth appliesthe tofollowing certainapply:

    The youservice dowill notbe needupdated toby report30 thisJune new2022 relief,to continuefix tothe fileissue onlineand inaffected thecustomers normalshould waywait until thethen serviceto isfile updated.your return.

    If

    Companies youclaiming needResearch toand submitDevelopment anexpenditure enhancedcredit Structures and Buildingsreporting AllowanceIncome claimTax onlinededucted beforefrom April 2022

    profits

    IfCustomers youwill doonly notbe useaffected theif HMRCyou freeare filingreporting service,both:

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      ForTax CT600:

      • boxesAct 7112009, andfrom 736a canprevious beaccounting usedperiod for(included claimin amountsbox L5)

      • box

        Income 771Tax candeducted befrom usedprofits for(included qualifyingin expenditurebox L35)

      YouThe shouldservice filewill inbe thisupdated wayby until30 theJune service2022 isto updatedfix the issue and newaffected boxescustomers areshould available.wait until then to file your return.

      If you have a deadline or an urgent requirement to file your companyreturn usesbefore the30 June 2022, HMRC freewill filingaccept service

      Youa cannotpaper makereturn claimsfor tothese theexceptional enhancedcases. StructuresIn andthis Buildingsinstance, Allowancea usingpaper thisreturn service.should include:

      Freeports:

      Companies(in canbox use6) thisthat enhancedyour capitalResearch allowanceand toDevelopment claim forincludes qualifyingIncome expenditureTax ondeducted plantfrom andprofits machinery primarilyplace usedthis inform designatedunder Freeportyour taxreturn

    • form sites.

      CT600
    • form CT600L
    • your accounts and computations

    FindSend outyour morepaper aboutreturn enhancedto:

    The

    Companies Corporationclaiming TaxResearch onlineand serviceDevelopment willexpenditure notcredit beand updatedreporting an amount of brought forward step 2 restriction to supportbe carried forward to the newnext allowanceaccounting untilperiod

    This Aprilis 2022.for Ifinformation youonly doas it will not needaffect toyour reportability thisto newsubmit relief,a continueCT600L to filethe onlineHMRC inCorporation theTax normalonline wayservice.

    A untilnew thepre-step service1 issection updated.

    Ifhas youbeen needadded to submitthe anCT600L enhancedfor capitalcustomers allowanceto claimreport beforethe Aprilamount 2022

    Ifof youstep do2 notrestriction usebrought theforward HMRCfrom freeprevious filingaccounting service,periods. youAny shouldbalance usenot existingused boxesand oncarried forward to the returnnext toaccounting submitperiod youris claim.captured in new boxes L8 and L129.

    ForThe CT600:

    • boxesfigure 725in canbox beL129 usedis forcorrectly claimincluded amounts
    • in box 760L140 can bebalance usedcarried forforward qualifyingto expenditure

    Younext shouldaccounting fileperiod, but has been captured twice in thisbox wayL150 until thetotal servicecarried isforward updatedto andnext newaccounting boxesperiod. areThis available.

    Ifmeans that your companysoftware useswill thebe reporting an incorrect figure in box L150, but this is used by HMRC freefor filingstatistical service

    purposes only.

    YouThe cannotfigure makein claimsbox toL129 will be the enhancedone capitalincluded allowancein usingbox thisL5 service.in your next Corporation Tax Self Assessment.

Published 4 March 2022
Last updated 6 April 2022 + show all updates
  1. The page has been updated with the latest changes and issues.

  2. First published.