Release notes

22 April 2025

Feature Summary
Qualifying Charitable Donations

Donations to overseas charities will not qualify for tax relief for donations after 1 April 2024.
Research and development (R&D) changes Changes have been made to reflect HMRC guidance to indicate whether a claim is by a large company, or by an R&D intensive SME and also reporting for the PAYE and National Insurance contribution liability cap. We have also added in app guidance for claims for exemption from the PAYE cap under the merged scheme.
Financial Year 2025 We’ve updated FY2025 to include currently known legislative changes and have incorporated the CT600 submission files provided by HMRC, enabling online filing of returns in this Financial Year.

8 January 2025

Feature Summary
RDEC

We've added the ability for companies to claim Research and Development Expenditure Credits for accounting periods commencing on or after 1 April 2023.

Open our Research and Development Relief help article

30 September 2024

Feature Summary
Double Taxation Relief

We’ve added a new navigator item, Double Taxation Relief, for chargeable accounting periods ended after 1 April 2023, to enable you to claim a tax deduction in respect of any eligible foreign tax suffered.

Open our Double Taxation Relief help article

Research and development surrenderable losses We have amended the claim process to give you complete control over the calculation and the allocation of unrelieved trade losses.

23 July 2024

Feature Summary
iXBRL taxonomy We’ve updated to the latest iXBRL taxonomy (FY2024 v1.0.0). This will be applied to all new returns generated following the update.
Research and Development SME relief We've updated the software to reflect the changes to R&D SME relief. This is only available to R&D intensive companies from 1 April 2024, other companies will claim under a new combined scheme which we will consider including in a future release.
Full expensing and 50% FYA disposals In Trade and in UK Property Business, amounts already entered in Disposal of assets subject to full expensing or 50% Special Rate Plant and Machinery Claim prior to applying the update will appear in Disposal of assets subject to full expensing once the update has been applied. Please review and amend as appropriate.
Stability & Performance Includes general performance and stability improvements.

22 April 2024

Feature Summary
Email notifications for HMRC filing issues

We'll send you an email notification to let you know if there was an issue filing to HMRC. Helping you avoid potential late filing penalties.

Access the client directly from the email to swiftly resolve the issue.

18 April 2024

Feature Summary
Financial Year 2024 We’ve updated FY2024 to include currently known legislative changes and have incorporated the CT600 submission files provided by HMRC, enabling online filing of returns in this Financial Year.
Creative Industries

We have introduced the ability to claim Creative Industry tax reliefs for accounting periods beginning on or after 1 April 2022.

Open our Creative Industries help article

16 November 2023

Feature Summary
Capital allowances

We've added functionality to allow a new First Year Allowance (FYA), enabling full expensing on main rate plant and machinery to be claimed. This is applicable for periods ending on or after 1 April 2023.

28 September 2023

Feature Summary
Tax returns for future financial periods

You are now able to create tax returns for any future tax year.

We have removed the date restriction, so you can model a client's tax affairs as far into the future as you require.

The tax rules for future periods are provisional and based on the most recent tax year. There may be exceptions when we confirm and implement a known future change.

We'll apply legislative updates for the latest rules over time. These may affect your data and tax calculation when applied.

These returns cannot be submitted to HMRC.

1 September 2023

Feature Summary
Import Client Management client record data updates directly into Corporation Tax.

Save time with our new Updates feature — no more entering client information in 2 places. Use Updates to bring Client Management client record information directly into Corporation Tax.

We'll notify you in-product about changes to the client record in Client Management. Choose to apply or ignore them.

You can also see a history of ignored and applied updates.

Go to In progress or Finished return > Updates to view client information changes made in Client Management.

Note:

You will only receive notifications for edits made in Client Management, after the Data Updates feature release. Any edits made before this release will not display in your updates.

1 August 2023

Feature Summary
UKI Compliance Ideas Portal

Introducing our in-product customer feedback portal.

Suggest new features or improvements and vote on your favourites.

Ideas with the most votes will be reviewed for product development.

Access the portal from Give Feedback > Share an idea.

You can also access the ideas portal from selected areas in the software.

Go to the UKI Compliance Ideas Portal (opens in a new tab)

28 June 2023

Feature Summary
iXBRL taxonomy We’ve updated to the latest iXBRL taxonomy (FY2023 v1.0.0). This will be applied to all new returns generated following the update.
Research and development

All R&D claims made on or after 1 August 2023 must be supported by a new Additional Information form which is available if you go to GOV.UK (opens in a new tab).

We have included the associated tick box for earlier periods to accommodate this change.
UKI Compliance Ideas Portal

Introducing our in-product customer feedback portal.

Suggest new features or improvements and vote on your favourites.

Ideas with the most votes will be reviewed for product development.

Access the portal from Give Feedback > Share an idea.

You can also access the ideas portal from selected areas in the software.

Go to the UKI Compliance Ideas Portal (opens in a new tab)

19 April 2023

Feature Summary
Financial Year 2023 We’ve updated FY2023 to include currently known legislative changes and have incorporated the CT600 submission files provided by HMRC, enabling online filing of returns in this Financial Year.
Corporation Tax Rate

We have updated the marginal relief functionality previously added, which is applicable from 1 April 2023.
Research and development We have included the new rates and additional reporting requirements for SME Research & Development relief claims.

15 December 2022

Feature Summary
Early Builds for Financial Year 2023 Early builds let you start work on the 2023 financial year. We've partly based early builds on previous years' tax rules and are therefore likely to change once the relevant legislative updates are made available. Until then early builds cannot be submitted online.
New Corporation Tax Rate

From 1 April 2023, the Corporation Tax main rate will increase to 25% applying to profits over £250,000. A small profits rate of 19% will also be introduced for companies with profits of £50,000 or less.

Where profits are between £50,000 and £250,000, tax will be paid at the main rate reduced by marginal relief.

We've included this functionality in the early build.

12 October 2022

Feature Summary
Submission receipts

You are now able to download a PDF submission receipt for all your successful submissions to HMRC. This contains the submission date, status and submission receipt number (IR mark). Making it easier for you to provide evidence of successful submissions to your clients.

It can be found in the individual submission summary page 'Actions' menu.
Submission receipt number (IR mark) We have improved the visibility of the submission receipt number (IR mark) by adding it to the tax computation and other PDF forms.

20 September 2022

Feature Summary
V1.99 CT600 submission files

We've incorporated the latest version of the CT600 submission files as provided by HMRC. Existing returns must be updated before they can be filed online.
Research & Development Improvements to the UI and report output to show a more detailed breakdown of figures in this area.

12 May 2022

Feature Summary
CT600L new UI elements added for small and medium size company Research and Development claims

For periods commencing on or after 1 April 2021, companies may have to complete additional boxes (L166 to L169A) in the CT600L when making small and medium size company (SME) Research and Development claims.

We've added this functionality to the Research and Development data entry.
Removal of the Coronavirus Job Support Scheme and Job Retention Bonus

The UK Government extended the Coronavirus Job Retention Scheme. This means they did not introduce the Job Support Scheme or Job Retention Bonus. We've removed the data entry fields for both.

Please review any amounts received and, if appropriate, re-enter in the correct section.
Super-deduction and 50% First Year Allowance on new plant and machinery investments

For periods commencing after 1 April 2021 up to and including 31 March 2023 companies will be able to claim:

  • A super-deduction providing a first-year allowance of 130% on most new plant and machinery investments. Usually an 18% main rate writing down allowance.
  • A first-year allowance of 50% on most new plant and machinery investments. Usually a 6% special rate writing down allowance.

6 April 2022

Update Summary
Issues affecting the Corporation Tax online service

HMRC's Corporation Tax online service is currently unable to accept certain submissions containing:

  • Research and Development claims.
  • Annual Investment Allowance claims.
  • Loans to Participators.

Read HMRC help on changes and issues affecting the Corporation Tax online service (opens in a new tab)

31 January 2022

Feature Summary
Create returns for financial year 2022

You are now able to create company tax returns for periods ending on or after 1 April 2022 (Financial year 2022).

9 December 2021

Feature Summary
Super-deduction and 50% First Year Allowance asset disposals

For periods commencing after 1 April 2021, you're now able to report on the disposal of assets which have been subject to a super-deduction or 50% First Year Allowance claim.

Open the Trade capital allowances help topic

Open the Property capital allowance help topic

AIA limit extension We have amended the software to take into account the delay until March 2023 of the reduction of the AIA limit from £1,000,000 to £200,000.
R&D tax credit relief changes We have adjusted the calculation of the Research & Development Tax credit cap. The calculation now incorporates the changes included in the 2021 Finance Act.

9 September 2021

Feature Summary
iXBRL taxonomy We’ve applied the latest iXBRL taxonomy (FY2021 v1.0.0) to all new returns generated following this update.
Capital allowances

We’ve updated capital allowances in line with HMRC's latest guidance.

You can now claim:

  • 130% super-deduction first year allowances
  • 50% special rate first year allowances

Open the trade capital allowances help topic

Open the property capital allowances help topic

Tax already paid but not repaid You can now report amounts of Corporation Tax paid by a company and not repaid by HMRC.

4 June 2021

Feature Summary
CT600L Research and Development supplementary pages

From 1 April 2021, companies must complete the CT600L when claiming small and medium size company (SME) Research & Development Relief and SME Payable Tax Credits.

We've added the ability to complete the CT600L supplementary pages for research and development relief or credit claims.
Research and Development Tax Credits Cap

From 1 April 2021, Research and Development Tax Credits are subject to a cap of £20,000 plus three times the PAYE and NICs liability of the company.

New functionality will now calculate when the R&D payable tax credits and PAYE/NIC cap applies.
Capital allowances

We’ve updated the Capital Allowances section in accordance with HMRC's latest reporting requirement guidance.

This includes the ability to claim zero-emission car allowances from within the Trade and UK Property Business pages.
COVID-19 support payments

There's now a Coronavirus Support Payment section for reporting additional information to HMRC. Declare the Amount received, Amount due and Overpayments already assessed.

Open the COVID-19 support payments help topic

7 April 2021

Feature Summary
Create returns for financial year 2021

You are now able to create company tax returns for periods ending on or after 1 April 2021 (Financial year 2021).

16 December 2020

Feature Summary
Annual Investment Allowance (AIA)

We’ve updated the application to reflect the recently announced deferral until 1 January 2022 of the reduction in the AIA limit to £200,000.

You can review and amend any AIA claims already entered, at Trade (or Property) – Capital Allowances.
iXBRL Taxonomy We’ve updated to the latest iXBRL taxonomy (FY2020 v1.0.0). This will be applied to all new returns generated following the update.

9 November 2020

Feature Summary
Corporate capital loss restriction

The amount of chargeable gains realised by companies that can be relieved by carried forward capital losses is limited to 50 percent from 1 April 2020. You are now able to identify and report these restricted losses.
Loss Relief Deductions Allowance We have expanded the functionality on the Loss Relief Deductions Allowance data entry page to allow you to allocate an amount to chargeable gains.
PDF attachments For the submission of long periods of account you are now able to attach PDFs to the second chargeable accounting period.

29 September 2020

Feature Summary
Group relief for losses

For accounting periods commencing on or after 1 April 2019, we've added the ability to claim or surrender group relief losses:

  • New Group relief section for claiming or surrendering current period and brought forward losses.
  • Group relief surrendered now available for Trade losses, Non-Trade Loan Relationship Deficits, UK Property Business losses and Qualifying Donations.

  • New Group Relief report.

  • Group relief updates to the losses reports for Trade, Non-trade, Property and Qualifying Donations in the reports tab.

Learn more about group relief in Sage Corporation Tax.

Capital allowances We’ve updated the Capital Allowances pages for Trade and UK Property Business to allow you to identify proceeds relating to the disposal of Electric charge-points and to report these, and amounts for zero-emission goods vehicles in accordance with HMRC's latest reporting requirement guidance.

29 June 2020

Feature Summary
Tax returns

The CT600 has been updated alongside the appropriate rules for submission.

You can also now submit a return with a tax liability.
Capital allowances From financial year 2020, you can no longer claim first year allowance on environmentally friendly expenditure so these entry boxes have been removed from Trade - Capital allowances page.

31 March 2020

Feature Summary
Create returns for financial year 2020 You are now able to create company tax returns for periods ending on or after 1 April 2020 (Financial year 2020).
Annual Investment Allowance From 1 January 2021, the AIA limit is decreased from £1,000,000 to £200,000. We’ve updated the application to reflect this change. We have also added a new field, Amount claimed elsewhere, to adjust the AIA available where a proportion is allocated to other companies.

11 February 2020

Feature Summary
Capital allowances

We've expanded the capital allowances sections to enable additional allowances to be recorded as Other capital allowances. These are:

  • Structures and buildings
  • Short-life assets
  • Patents
  • R&D
  • Know-how pooled assets
  • Other

The First Year Allowances section now includes electric vehicle charge-points as a separate item.

CT600: Zero-emission goods vehicles

Following updated guidance from HMRC, we’ve changed the way that details of zero-emission goods vehicles are reported in CT600 boxes 705, 710, 724, 749, 750 and 755.

The changes are for reporting purposes only and do not affect the Corporation Tax computation.

4 November 2019

Feature Summary
R&D Enhanced Expenditure for SMEs

We've added the ability for SME companies to make the following R&D expenditure claims:

  • Enhanced Revenue Expenditure
  • Tax Credits

You'll find the new R&D Relief tab within the Trade section.
Chargeable Gains

To enable submission of returns for more of your clients, we have added a chargeable gain disposals section where you can:

  • Enter details of the disposal of a capital asset to calculate the gain or loss.
  • See the indexation allowance for assets acquired before 1 January 2018, and edit this if an alternative calculation method is relevant.
  • Enter claims for relief and losses brought forward.

In this release, you can enter details to report a single chargeable gain. This area will be expanded in a future release.

 

25 July 2019

Feature Summary
Loss Relief Deductions Allowance We have improved the functionality on the Loss Relief Deductions Allowance data entry page.
Corporate Losses Reform HMRC recently updated their Company Tax Return Guide to bring the reporting requirements for UK Property Business losses in line with Trade Losses and Non-trade Loan Relationships deficits. You can now identify which UK Property Business losses arose before 1 April 2017 and those which arose on or after 1 April 2017. We have included this functionality for accounting periods ending on or after 1 April 2017.

18 June 2019

Feature Summary
Annual Investment Allowance From 1 January 2019, the AIA limit increased from £200,000 to £1,000,000, for a period of two years. We’ve updated the application to reflect this change.
FY2019 iXBRL Taxonomy The new FY19 (v1.0) iXBRL taxonomy is now available and has been applied to all new returns as from this date.

22 May 2019

Feature Summary
Create returns for financial year 2019 Create returns for financial year 2019 You are now able to create company tax returns for periods ending on or after 1 April 2019 (Financial year 2019).
51% Group Companies HMRC recently updated their Company Tax Return Guide to state that the number returned in box 625 – Number of 51% group companies – should include the company itself. This is unless the company has no related 51% group companies, in which case this box should be left blank. In accordance with HMRC’s advice, we’ve included this change in the application for accounting periods ending on or after 1 April 2019.
V1.9 CT600 submission files We’ve incorporated the latest version of the CT600 submission files as provided byHMRC. Existing returns must be updated before they can be filed online.

19 June 2018

Feature Summary
Loss Relief Deductions Allowance We’ve added a Loss Relief Deductions Allowance section. This allowance can now be reported on the company’s corporation tax computation.
FY2017 iXBRL Taxonomy The new FY17 (v1.1.0) iXBRL taxonomy is now available and has been applied to all new returns as from this date. This went live on 18 November 2016 and is mandatory for all returns as from 1 April 2017.
V1.9 CT600 submission files We’ve incorporated the latest version of the CT600 submission files as provided by HMRC. Existing returns must be updated before they can be filed online.

22 May 2018

Feature Summary
Tax Returns Corporation Tax returns can now be deleted.
Delete Period of Accounts You can no longer delete a period of accounts when there are Tax returns associated with that period.
Stability & Performance Includes general performance and stability improvements.

26 April 2018

Feature Summary
Create returns for financial year 2018 You are now able to create company tax returns for periods ending on or after 1 April 2018 (Financial year 2018).

14 December 2017

Feature Summary
Corporate Losses Reform

We’ve made changes to accommodate the requirements of Finance (No. 2) Act 2017. You’ll see changes in the following areas:

  • Trade Losses
  • UK Property Losses
  • Non-trade Loan Relationships
v1.8 CT600 We’ve incorporated the 2017 version of CT600 and associated submission files as provided by HMRC. Existing returns must be updated before they can be filed online.
FY2017 iXBRL Taxonomy The new FY17 iXBRL taxonomy is now available and has been applied to all new returns as from this date. This went live on 18 November 2016 and is mandatory for all returns as from 1 April 2017.

16 August 2017

Feature Summary
App Switcher Ability to navigate between Sage applications increasing the efficiency of workflow from bookkeeping to accounts preparation to tax and then back again.
Stability & Performance Includes general performance and stability improvements.

20 June 2017

Feature Summary
V1.7 CT600 We have incorporated the 2017 version of CT600 and associated submission files as provided by HMRC. In order to keep your compliance up to date, we have applied the new version of this form to all versions of Sage Corporation Tax Online. You may notice some changes to previously run versions of this form as a result of this update, but this is required in order to maintain the correct compliance version.
Zero-emission good vehicles We have included new compliance as a result of changes to HMRC reporting requirements. We have amended the capital allowances sections to allow data to be entered to help meet these new requirements.
Updating to new compliance We have added the ability to allow you to accept new compliance and improvements into existing returns. This allows you to control when and into which clients you add these changes.

1 April 2017

Feature Summary
Entering data for financial year 2017 You are now able to roll forward into financial year 2017 and enter data for this period. The software does not yet contain the March 2017 Budget changes. As soon as they become available, you will be able to update the period to include these. We have provided guidance to help prevent the submission of data which is not yet compliant.
Customer improvements

We have identified improvements and added these for financial year 2017, including:

  • Improvements to labelling and descriptions, to assist with entering data Additional validations added to assist with the submission of correct data.

18 November 2016

Feature Summary
FY16 iXBRL Taxonomy The new FY16 iXBRL taxonomy is now available and has been applied to all new returns as from this date. This went live on 18 November 2016 and is mandatory for all returns as from 1 April 2017.

31 August 2016

Feature Summary
Compliance for financial year 2016 Submissions for new compliance areas impacted by the budget will be turned on.HMRC live server is now available and will accept submission packages with new compliance areas introduced as part of the 2016 budget announcements. This includes updates to XMLschema.
ComputationPDF

Improvements to look and feel of final report including:

  • Fixing of page breaking and blank pages
  • Fixing of logic around appearance of UK property supporting schedule
  • Styling of report

16 August 2016

Feature Summary
Compliance for financial year 2016 We’ve added compliance to support the new financial year 2016. Submissions are available for any new tax returns not impacted by budget changes, and messaging is available to support you in understanding which areas are not yet available. Submissions for new compliance areas impacted by the budget will be turned on post ‘Royal Assent’ at the beginning of September.
Create a new return We’ve improved this to support you in moving from one financial year to the next. This will take you through the process of linking your tax return to a set of accounts from Sage Final Accounts, or in creating a new blank tax return for the next financial year.
ComputationPDF We’ve improved the appearance of the computation PDF and have also improved aspects including the splitting of tables and page breaks.
Usability

We’ve made the following improvements to the usability of data entry:

  • Dates can now scroll back for more than 10 years.
  • Post code validations have been improved on integration with Sage Final Accounts.
  • UK property schedules have been improved including the presentation of data.

29 March 2016

Feature Summary
Visual Enhancements Sage’s new brand has come to Corporation Tax, with an improved user interface and navigation style. By applying colour, contrast, fonts, spacing and more, we hope you’ll find the new look both beautiful and more usable.
Changes to the navigator

We have reorganised the navigator into nine sections to make it easier for you to locate specific data entry pages. The nine sections are:

  • Non-financial Information(which includes Company Information and Information for the Return)
  • Trade(which includes Turnover and Adjustment, Capital Allowances and Losses)
  • UK Property Business(see below)
  • Non-trade Loan Relationships(which includes Relationships and Deficits)
  • Qualifying Charitable Donations
  • Loans to Participators
  • Payments and Repayments
  • Tax Avoidance
  • Attachments for Online Filing
UK Property Business

We have added three UK Property Business pages:

  • Adjustments
  • Capital Allowances
  • Losses

You can access these from UK Property Business on the navigator. Information entered on these pages will populate Computation preview and, if relevant, Non-trade Loan relationships and Qualifying Charitable Donations.
Feedback tool The feedback tool has moved. You can provide us with feedback by clicking the new megaphone icon in the global navigation in the top right corner. We’ll continue to review each comment and are constantly adjusting our development work based on customer feedback.

1st December 2015

Feature Summary
Create return Returns are the basic container for the work you’ll be undertaking for your clients. Once you’ve opened a client, in the Corporation Tax section, click Create New Return.
Periods of account Your ‘accounting period’ for Corporation Tax is the time covered by your Company Tax Return. It can’t be longer than 12 months and is normally the same as the financial year covered by your company’s annual accounts. Sage Corporation Tax Online supports periods starting on or after 1 April 2014.
Company information Enter the company information. These details will be used to populate the company tax return.
Information for the return Enter information for the return. The information you include here will appear on the Company Tax return and will assist with the tagging process.
Adjustments to Trade Profit/(Loss) Enter any adjustments to Trade Profit/(Loss)
Payments and repayments On the Payments and Repayments page you can choose how your client will receive any repayments.
Tax avoidance You should complete the Tax Avoidance page if the company is party to a disclosable tax avoidance scheme. Completing this page will complete the CT600J when you generate the return.
iXBRL online filing

Attach any documents needed for online filing. Typically this will be:

  • an iXBRL set of accounts saved on your computer.
  • the computation generated within Corporation Tax and automatically attached.
  • any additional PDF documents.
Computation Preview When you’ve filled in all of the pages, click the Computation Preview tab. This provides details of the company’s Corporation tax position.
Check computation If everything looks correct, click Check Computation and Return. This will perform a validation of the information you’ve entered, against what is required for the CT600.
Generate reports

Click Generate Reports to create any of the following:

  • Computation PDF
  • Computation iXBRL
  • CT600 PDF
  • CT6000 XML
Generate submission files When everything seems to be ready, click Generate Submission Files. You will need to enter your HMRC User ID and password for the files to be created and saved in your online submission area.