startCCH Corporation Tax IE: 2026.7.1 Release Notes
Release Notes

CCH Corporation Tax IE: 2026.7.1 Release Notes

CCH Corporation Tax IE
Last update: Reading time 7 minutes
Non CCH Central SuiteLatest Release

    Prerequisites

    Installing CCH Corporation Tax IE 2026.7.1

    Prior to installing this update, you must ensure that you have 2025.8.2 currently installed on your system. Installation of the update is straightforward; however, we recommend that you take a moment to review the Installation Guide

    New Features

    Company Details – Group for Irish Tax Purposes

    As per the CT1-v26 schema changes recommended by ROS, the Group for Irish Tax Purposes panel under the Company Details page has been enhanced to capture additional details for claimed and surrendered losses for Tax Year 2026.

    The following new fields have been introduced:

    ·         Claim to Losses – Name and Tax Reference Number (ClaimToLossesNamePpsn): the name and Irish tax reference number of the company from which the losses are claimed. The name is stored in CTaxDetailsClaimedLoss (up to 40 characters).

    ·         Surrender of Losses – Name and Tax Reference Number (SurrenderOfLossesNamePpsn): the name and Irish tax reference number of the company to which the losses are surrendered, stored in CTaxDetailsSurrenderedLoss.

    ·         Section 403(2)(d)(ii) activity indicator (clause_4_Activity4): confirms the qualifying Section 403(2)(d)(ii) activities on both the Additional Details of Claimed Loss list (claimant) and the Additional Details of Surrendered Loss list (recipient). It is submitted as a boolean (true/false) value in the CT1 v26 schema.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_1.png
    CCH_Corporation_Tax_2026-7-1_Release_Notes_4.png

    Company Details – De Minimis Aid

    A new monetary field, Gross Grant under Living City Initiative section 372AAE (grossGrantLCI372AAE), has been added to the De Minimis Aid panel under Company Details. You can access this panel by clicking the ‘de Minimis Aid’ link from the Company Details menu.

    It sits alongside the existing section 372AAC and section 372AAD gross grant fields and captures the gross grant or aid received under section 372AAE. The value is stored in CTaxCompanyDetails and submitted as a monetary amount (euros16) in the CT1 v26 schema.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_7.png

    IMPORTANT:  Note it is very important that before running any database update you perform a database backup. CCH always advise that your practice takes regular backups to minimise any loss of data.

    Company Details – Country of Residence

    Four new fields have been added to the Company Details panel to capture additional country of residence information.

    ·         Country of Residence Tax ID (countryOfResidenceTaxID) – text up to 50 characters.

    ·         Country of Residence Company Name (countryOfResidenceCompanyName) – text up to 100 characters.

    ·         Country of Residence Address (countryOfResidenceAddress) – text up to 140 characters.

    ·         Relevant Migration Date (relevantMigrationCountry) – an optional date entered in DD/MM/YYYY format. Note: although the attribute name refers to a country, the CT1 v26 schema types this value as a date.

    All four values are stored in CTaxCompanyDetails.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_8.png

    Trading Results – Relevant Trade within Section 291A

    Seven new monetary fields have been added to the Relevant Trade within Section 291A sub-section of Trading Results.

    ·         Amount of balancing allowance claimed – before (amountBalancingAllowanceClaimedBefore).

    ·         Amount of balancing allowance claimed – after (amountBalancingAllowanceClaimedAfter).

    ·         Amount of balancing allowance for the accounting period – before (amountBalancingAllowanceAPBefore).

    ·         Amount of balancing allowance for the accounting period – after (amountBalancingAllowanceAPAfter).

    ·         Amount of unused balancing allowance – before (amountUnusedBalancingAllowanceBefore).

    ·         Amount of unused balancing allowance – after (amountUnusedBalancingAllowanceAfter).

    ·         Amount of relief being claimed (reliefAmtBeingClaimed).

    All seven values are stored in CTaxTradingResults and submitted as monetary amounts (euros16) in the CT1 v26 schema.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_9.png

     

    Trading Results – Section 81E

    New fields have been added to Trading Results to support the section 81E deduction for expenditure on the construction of apartments.

    ·         Confirm deduction made under section 81E (confirmDeductionMadeUnder81E) – monetary amount.

    ·         Confirm eligible expenditure under section 81E (confirmEligibleExpenditureUnder81E) – monetary amount.

    ·         Number of apartments completed under section 81E (numberOfApartmentCompletedUnder81E).

    ·         Relevant beneficial owner under section 81E (relevantBeneficialOwnerUnder81E) – Yes/No indicator.

    ·         Stock exchange expenditure (stockExchangeExpenditure) – monetary amount.

    All values are stored in CTaxTradingResults.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_10.png
    CCH_Corporation_Tax_2026-7-1_Release_Notes_11.png

    Rental Income – Cost Rental Dwellings

    Four new fields have been added to the Rental Income panel for cost rental dwellings.

    ·         Number of qualifying cost rental dwellings (numberOfQualifyingCRD).

    ·         Total dwellings rent (totalDwellingsRent) – monetary amount.

    ·         Total gains against Corporation Tax (totalGainsAgainstCT) – monetary amount.

    ·         Confirmation on Housing Act (confirmationOnHousingAct) – Yes/No indicator.

    All values are stored in CTaxIrishRentalIncome; monetary amounts are submitted as euros16 in the CT1 v26 schema.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_12.png

    Rental Income – Living City Initiative Section 372AAE

    A new Living City Initiative section 372AAE claim has been added to the Rental Income (Living City Trade / Profession) panel, parallel to the existing section 372AAC and section 372AAD claims.

    ·         Claim under section 372AAE (claim372AAE) – monetary amount.

    ·         Address of the qualifying premises (addrqualifying372AAE) – up to 140 characters.

    ·         Eircode of the qualifying premises (eircode372AAE).

    ·         Identification number (identificationnumber372AAE) – up to 20 characters.

    ·         Reference number (referencenumber372AAE) – up to 20 characters.

    ·         Aggregate qualifying expenditure details (qualifyingexpenditure372AAE) – free text up to 1000 characters.

    All values are stored in CTaxIrishRentalIncome.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_13.png

    Research & Development Credit – Section 766C (Corporation Tax at 35%)

    Two new monetary fields have been added to the section 766C panel of Research & Development Credit & Allowances.

    ·         Amount of R&D corporation tax at 35% (amtRDcorpTaxAt35).

    ·         First instalment credit at 35% (firstInstalmentCredit35).

    Both values are stored in CTaxResearchAndDevelopmentCredit and submitted as monetary amounts (euros16) in the CT1 v26 schema.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_15.png
    CCH_Corporation_Tax_2026-7-1_Release_Notes_16.png

    Research & Development Credit – Section 766C Employee Instalments

    The section 766C employee details have been restructured into three repeating instalment grids: First Instalment (employee1st), Second Instalment (employee2nd) and Third Instalment (employee3rd).

    ·         Each grid captures Employee PPSN (employeePPSN, up to 20 characters) and Employee Amount (employeeAmount, monetary).

    ·         Each grid supports up to 50 employee records per instalment.

    Records are stored in CTAXSecCEmployeeDetails. This replaces the previous flat employee attributes – see the Removed Fields sections below.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_17.png

    Research & Development Credit – Section 766D

    A new monetary field, Amount of R&D corporation tax at 35% (amtRDcorpTaxAt35), has been added to the section 766D panel. The value is stored in CTaxResearchAndDevelopmentCredit and submitted as a monetary amount (euros16) in the CT1 v26 schema.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_19.png

    Digital Games Relief – Interim Claim under Section 481A(19)

    A new Date of Issue field (dateOfIssue) has been added to the interim Digital Games Relief claim under section 481A(19). It sits alongside the existing Certificate Date Issued field and is recorded as a date (DD/MM/YYYY). The value is stored in CTaxDigitalGamesReliefInterim (intm_dateOfIssue).

    CCH_Corporation_Tax_2026-7-1_Release_Notes_20.png

    Irish Investment Income – Film Clawback under Section 487A

    A new Film Clawback under section 487A has been added to the Clawback panel of Irish Investment Income, parallel to the existing Film Clawback.

    ·         Film Certificate Reference (filmCertRef) – up to 20 characters.

    ·         Unauthorised Amount Chargeable (unauthAmountChargeable) – monetary amount.

    ·         The grid supports up to 20 records.

    ·         Total Film Clawback under section 487A (totalFilmClawbackSec487A) is recorded for the panel.

    Detail records are stored in CTAX FilmClawback and the total in CTaxIrishInvestmentIncome.

    CCH_Corporation_Tax_2026-7-1_Release_Notes_21.png
    CCH_Corporation_Tax_2026-7-1_Release_Notes_22.png

     

    Summary Calculation

    Three new monetary attributes have been added to the Summary Calculation for the CT1 v26 schema.

    ·         Unscripted production tax offset (unscriptedProductionTaxOffset).

    ·         Unscripted production tax refund (unscriptedProductionTaxRefund).

    ·         Film clawback under section 487A (filmClawbackSec487A).

    All three are submitted as monetary amounts (euros16).

    Removed Fields

    Trading Results – Farm Buildings and Slurry Storage Removed (Section 658A)

    Edit section

    Three monetary expenditure fields have been removed from the Trade Profits section of Trading Results for Tax Year 2026.

    ·         Amount spent on Farm Buildings (farmBuildings).

    ·         Amount spent on slurry storage under section 658A(2)(a) (slurryStorageA).

    ·         Amount spent on slurry storage under section 658A(2)(b) (slurryStorageB).

    These fields are no longer captured in the application or submitted in the CT1 v26 schema.

    clipboard_ec6be21380cd548d59e29aa03b25bd41a.png

    Company Details – LACL and LAC Lessors Claim Details: Total Claimed Removed

    The Total Claimed attribute (totalClaimed) has been removed for Tax Year 2026. It has been removed from both the LACL Claim Details (LaclClaimDetails) and the LAC Lessors Claim Details (LacLessorsClaimDetails) under Company Details.

    The field is no longer captured in the application or submitted in the CT1 v26 schema.

    clipboard_e5f6c30528df2ec4771aaa3eca4848fca.png
    clipboard_e77c0d3a60751003c85b6c5dc0ef68da7.png

    Research & Development Credit – Legacy Employee Attributes Removed (Section 766C)

    The previous flat employee attributes on section 766C have been removed and replaced by the repeating instalment grids described above. The following attributes have been removed:

    ·         employeePPSN

    ·         employeeAmount

    ·         employeePPSN2ndInstalment

    ·         employeeAmount2ndInstalment

    ·         employeePPSNThird

    ·         employeePPSNThirdAmt

    Employee details are now captured per instalment via the employee1st, employee2nd and employee3rd elements.

    Digital Games Relief – Accounting Period Removed (Sections 481A(19) and 481A(20))

    The Accounting Period Begin and Accounting Period End attributes (accountingPeriodBegin, accountingPeriodEnd) have been removed from Digital Games Relief. They have been removed from both the section 481A(19) and section 481A(20) claims.

    These fields are no longer captured in the application or submitted in the CT1 v26 schema.

    clipboard_e0b2ca9bfd28806fa2fc8f21fbe6e6001.png
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