TaxCalc Release Notes 2025

Below are the Release Notes for TaxCalc 2025 releases. Click to see the Release Notes for 2013-2016 > 2017 > 2018 > 2019 > 2020 > 2021 > 2022 > 2023 > 2024

Please note we phase releases out so you may not see this available straight away.

TaxCalc Product Update - version 16.4.660 - Released on 1 July 2025

For Customers who have not already updated to Version 16, this update requires an installer to be run. Please ensure that you have local admin rights before attempting the update.
This release may result in a change to the IR Mark on any existing V3 CT600 returns.
Please check our System Requirements before installing this version of TaxCalc.

Product summary

Tax Return Production
Practice Manager
eSign Centre
Time
Accounts Production
VAT Filer
MTD Quarterly Filer

Tax Return Production

SA100 Individual Tax Returns

WhatIf Planner has been updated for 2025/26 tax year.
- Projected payments on account for 2026/27 will now be based on the tax liability calculated for 2025/26.
- Fixed an issue where a property loss brought forward in the Tax Return was showing in the WhatIf Planner calculation in error.
Dividend database has been updated for 2024/25 tax year.

General Maintenance

Capital Gains Tax
- Improved messaging in SimpleStep^(R) regarding capital gains tax calculations for disposals taking place on or after 30 October 2024.
- Capital losses arising on Cryptoassets are now always being carried forward.
- Crytpoasset gains are now always being reduced by losses brought forward.
- General losses are now being restricted so they are not offset against non-resident capital gains tax disposals.
- Updated display text on capital gains tax final summary to reflect revised Investors' lifetime limit of £1,000,000.
- Updated messaging relating to HMRC Special cases for 2024/25 tax year.
Changed the validation message regarding reduced payments on account to an information message and updated the wording.
Updated SA110 HMRC Tax Calculation Summary deficiency relief calculations.
Updated criteria for displaying validation #tc834 relating to the adjustment required in box 68 of the self-employment pages.
Updated foreign tax credit relief calculations to take into consideration property losses.
Updated text on finance costs summary to stop showing incorrect text for subtotal of reliefs (when present).
Removed incorrect validation relating to end date for premiums for the grant of a lease wizard.
Fixed a calculation issue relating to High Income Child Benefit Charge.

SA800 Partnership Tax Returns

NEW Land and Property summary.

SA900 Trust Tax Returns

Update to forms R185.
Improvements to messaging regarding capital gain disposals, made on or after 30 October 2024.

General maintenance

Improved the presentation of the additional information in box 21.9 so all content is now displayed on the printed tax return.
Improved the calculation of capital gains tax for capital gain disposals, made on or after 30 October 2024

CT600 Corporation Tax Returns

Corporation Tax taxonomy update for 2025.
Ability included to choose the type of charitable donations within the charities wizard, to distinguish between qualifying and non-qualifying payments, and added new CT Computation section showing amounts.
Created a separate wizard for land remediation and removed vaccine research and land remediation from creative tax credits wizard, including updates to the CT Computation.

General maintenance

Amended the logic to ensure box 659 is populated, where relevant, for corporation tax periods starting before 1 April 2024.
Stopped the ability to refresh and import accounts to Corporation tax returns, when the return has been locked.
Updated the calculation for paying by instalments, to ensure that the instalments are calculated using the corporation tax value before tax already paid.
Updated the computation to display appropriate text relating to very large company instalments.
Updated the logic for displaying information messages regarding large company and very large company tick boxes.
Updated creative core expenditure boxes 663 and 665, to ensure they are locked if the wizard has been used.
Updated validations relating to creative tax credits to ensure they are validating the relevant boxes.
Removed an incorrect validation regarding calculation of patent box relief after applying the Nexus formula.
The ‘Close’ button was not working in the Audio Visual Expenditure Credit (AVEC) and Video Games Expenditure Credit (VGEC) wizard - this has been corrected.
Updated the logic for a validation error regarding box 515 (income tax deducted) when a repayment is due.
Minor update regarding CT600F (Tonnage Tax) print preview and SimpleStep^(R) screens.

Practice Manager

Technical improvements to the Bulk Service Wizard for better processing time, including a visual % progress bar.
The Work Management page has a new page-by-page view option for easier and quicker navigation within jobs and tasks.

General maintenance

Using Bulk Create with existing templates now links to Non-TC work periods on creation.
Updated the MTD Filing Status widget to show the correct Tax Year.
On occasion, services were being duplicated in services rendered and data mining - this has now been resolved.
On occasion, services were not being displayed in data mining - this has now been resolved.
Completed tasks are now always displayed in Work Management when using the filter “Completed” and closing/reopening TC.
Reinstated the delete warning for Jobs/tasks that were being deleted through Work Management.

eSign Centre

Advanced Electronic Signature (AES) option added to the eSign Centre to allow OTP sent to the nominated mobile number for the client in order to access the document.

Time

The Time Analysis report now allows larger data export.

Accounts Production

As a result of the changes for The Companies (Accounts and Reports) (Amendment and Transitional Provision) Regulations 2024, for periods on or after 6th April 2025:

The existing Check & Finish^(R) message prompts that warn where the accounting standard or size of company selections are appropriated based on the turnover/net assets have been updated to reflect the new company size thresholds:

	Micro-entity	Small	Medium-sized
Turnover	£1 million	£15 million	£54 million
Balance Sheet total	£500,000	£7.5 million	£27 million
Employees	10	50	250

The Director and Strategic reports have been updated and will no longer display the sections which are not required for periods starting on or after 6 April 2025.
Limited companies and LLPs have been updated to apply the new FRS 2025 taxonomy.
Accounting periods will now be locked automatically following successful submission to HMRC for sole traders, partnerships, limited companies and LLPs, so as to prevent accidental changes to the accounts once they have been submitted. The accounts will continue to be locked on successful electronic submission to Companies House for limited companies and LLPs (unless you have previously disabled this option). Both locking options can be amended within Admin centre.
A new ‘Company is a Community Interest Company’ checkbox added to the Quick Client setup within Accounts Production.

General Maintenance

When the value displayed in the Balance Sheet for Deferred Taxation is £Nil, the dash will be correctly aligned to the right.
The existing Check & Finish^(R) message prompt, verifying eligibility criteria for small and medium sized companies, groups and LLPs, has been updated to use “Gross Assets” as the Balance Sheet Total rather than “Net Assets”.
Group Trial Balance and financial statements will now correctly include amounts posted to indirect subsidiaries in the consolidated figures.
Updated the Check & Finish^(R) message regarding “Balance at the end of the period on the provisions for liabilities note for other provisions do not agree to the other provisions balance on the balance sheet.” that occurs when users' entries in the Provisions for Liabilities note correctly match the total postings to account code 6000.
Fixed a spelling error in the Companies House Filing Wizard for Community Interest Companies.

AML Centre

You can create Client Due Diligence and Risk Assessments for Charity clients.

Companies House Forms

Companies House Forms can be created via event triggers for Charity clients.

Companies House Sync

Companies House Sync Wizard will create and sync Charitable Company (Limited by Guarantee).

VAT Filer

Changed a validation message to an information message and updated wording when box 4 has a negative value.

MTD Quarterly Filer

Included a link to to our own template in the import data screen and provided default mappings for the template.
Added the ability to lock the tax year.
Allowed for a single import mapping to be created for all business types for summarised and detailed breakdown options.
Improved the import screen for foreign property businesses to only show countries relevant to the tax year selected.
Reviewed and updated validations regarding naming of PDF accounts attached to a Corporation tax return.
CT600 / Large & Very Large Companies - this now validates when the relevant boxes (630 or 631) haven't been ticked.

TaxCalc Product Update - version 16.3.403 - Released on 9 June 2025

For Customers who have not already updated to Version 16, this update requires an installer to be run. Please ensure that you have local admin rights before attempting the update.
This release may result in a change to the IR Mark on any existing V3 CT600 returns.
Please check our System Requirements before installing this version of TaxCalc.

Product summary

MTD Quarterly Filer

MTD Quarterly Filer

Added additional fraud transaction header data to API interactions as specified by HMRC.

TaxCalc Product Update - version 16.3.350 - Released on 22 April 2025

Please note:

For Customers who have not already updated to Version 16, this update requires an installer to be run. Please ensure that you have local admin rights before attempting the update.
This release may result in a change to the IR Mark on any existing V3 CT600 returns.
Please check our System Requirements before installing this version of TaxCalc.

Product summary

Tax Return Production
MTD Quarterly Filer
Accounts Production

Tax Return Production

General Maintenance

Help content updated.
Ensured messaging relating to VAT484 is only shown on Check & Finish^(R) screen relating to VAT484.

SA100 Individual Tax Return

Updated SA110 notes for 2025 tax year.
Updated HMRC working help sheets for 2025 tax year.
Unlocked capital gains tax boxes CGT41, CGT42, CGT43, CGT44, CGT46 and CGT52 when SimpleStep^(R) mode is being used.
Improved Memorandum Report Capital Gains Tax and Investors' Relief sections.
Fixed an issue relating to messaging regarding claiming capital allowances under the cash basis.
Fixed an issue where some capital gains tax values were being retained after deleting an asset.

R40 Claim for Repayment

Updated R40 wording in line with HMRC’s updated form.
Added a validation message regarding the requirements for an Advanced Electronic Signature should an election for a nominee to receive a repayment is made.
Ensured that box 10.4 is visible on main R40 screen, as well as in the marriage allowance wizard.
Ensured that box 10.5 is filled where relevant.

SA800 Partnership Tax Return

Updated wording on the Partnership summary for ‘Foreign tax claimed as a deduction’ row and ‘Accounting Period/Tax Year Adjustment’ row.
Fixed an issue relating to messaging regarding claiming capital allowances under the cash basis.

SA900 Trust Tax Return

Updated SA951 notes for 2025 tax year.
Updated annual exemption amounts for capital gains tax.
Fixed an issue where the type of trust was being changed on creation of a 2025 Return where information was brought forward from the previous year.

CT600 Corporation Tax Return

Updated Corporation Tax Return (2025) Version 3.
- Tick box added for R&D Intensive companies.
- New boxes added for Audio-Visual Expenditure Credit (AVEC) & Video Games Expenditure Credit (VGEC) claims.
- Tick box added to confirm additional information forms for creative tax credit claims have been submitted. If these are not submitted before the CT600, the claim will be refused.
- New box added for creative core expenditure.
Updated supplementary pages with new 2025 versions.
- CT600F - Tonnage Tax.
- CT600L - Research & Development.
Update to the calculation for box L75 on R&D supplementary pages where exemption from PAYE exempt cap applies.
Inclusion of Independent Film Tax Credit (IFTC) calculations available for companies with qualifying film productions claiming AVEC from 1 April 2025.
Increased the enhanced rate from 34% to 39% for companies incurring UK visual effects (VFX) costs from 1 April 2025.
Updated creative tax credit relief rates for Theatres, Orchestras and Museum & Galleries.

NEW: MTD Quarterly Filer

MTD Quarterly Filer is initially available by invitation only and is currently in beta testing. General release is expected to follow in May 25. For more information visit TaxCalc.

Suitable for Self-employed, UK and Foreign Property Businesses.
Integration with Practice Manager for existing businesses.
Link existing businesses to HMRC records or create businesses using HMRC’s data.
Fetch quarterly obligations for businesses, together with their statuses.
Submit income and expense data to HMRC using consolidated or detailed methods.
Save import mappings to use across clients.
Trigger and retrieve HMRC calculation of year to date and estimated tax liabilities.

Accounts Production

Where a company is specified as a Community Interest Company (CIC), a new Community Interest Company report will be generated in addition to the accounts. The accounts and Community Interest Company Report can be submitted electronically via the Companies House portal, TaxCalc will create a zip file containing the Accounts and CIC report in the required format to submit via the Companies House portal. Companies House are not yet able to accept these submitted directly via TaxCalc or any other accounting software.

TaxCalc Product Update - version 16.2.850 - Released on 1 April 2025

Please note:

For Customers who have not already updated to Version 16, this update requires an installer to be run. Please ensure that you have local admin rights before attempting the update.
This release may result in a change to the IR Mark on any existing V3 CT600 returns.
Please check our System Requirements before installing this version of TaxCalc.

Product summary

Companies House Filing History
Practice Manager
eSign Centre

Companies House Filing History

Companies House filing history will correctly display the clients with submission status within the Companies House Filing Log.

Practice Manager

General maintenance

Work Item Status Dashboard Widgets now displays all counts as expected.
Task Assigned to me Dashboard Widget can now be filtered by the Portfolio Manager.
Job Automation improvements for the execution of eSign intergration actions.

eSign

General maintenance

All work modules such as Accounts & Tax now support “Add” to eSign functionality.

TaxCalc Product Update - version 16.2.800 - Released on 25 March 2025

Please note:

For Customers who have not already updated to Version 16, this update requires an installer to be run. Please ensure that you have local admin rights before attempting the update.
This release may result in a change to the IR Mark on any existing V3 CT600 returns.
Please check our System Requirements before installing this version of TaxCalc.

Product summary

Tax Return Production
NEW: MTD Quarterly Filer
Accounts Production
Companies House Advanced Integration
Practice Management

Tax Return Production

SA100 & R40 – Individual Tax Return
- Incorporation of the 2024/25 R40, SA100 Tax Returns and associated supplementary pages, including updates to calculations, summaries, wizards, HMRC helpsheets and worksheets.
  - Updated self-employment pages and import from the previous year to reflect the change of usage of the previously described ‘cash basis’ box (box 10).
  - Updated wording and calculations to reflect that Class 2 National Insurance does not need to be paid by individuals registered as being self-employed or in a partnership, with profits exceeding £6,725.
- Updated SimpleStep^(R)for the 2025 tax year.
- Added an Adjustment Calculator to assist with the calculation of taxable profits for non-aligned accounting periods.
- Updated the Transition Profits wizard for the new tax year.
- Added functionality to enable payments on account that have been reduced to be highlighted.
  - Created a new validation message if payments on account have been reduced.
- Added a new information message for individuals who have made pension contributions and reached the age of 75 during the year.
- Updated and improved the Memorandum Report.
- Updated the Capital Gains Tax section.
  - Added the ability to include reference numbers for CGT UK Property Disposal Return and Real Time Transaction Returns.
  - Added the ability to choose ‘Employee Ownership Trust’ under the reliefs section of Capital Gains Tax.
  - Added the ability to state that rollover relief is provisional under the reliefs section of Capital Gains Tax.
  - NEW Capital Gains Tax Adjustment Summary detailing the additional tax due for gains arising on or after 30 October 2024.
  - Updated Capital Gains Tax Summaries to account for the increase in Capital Gains Tax rates for gains arising on or after 30 October 2024.
  - Updated functionality relating to Investors' Relief to account for the new lifetime allowance limit of £1 million from 30 October 2024.
- General Maintenance
  - Updated Relevant UK earnings summary to include transition profits.
  - Updated the Transition Profit Tax Calculation to reflect the correct wording and rates when Scottish tax rates have been applied.
  - Locked all boxes on the Capital Gains Tax pages in Forms mode when SimpleStep^(R) has been used (or the data entry method is yet to be decided).
  - Updated box 36 on the Capital Gains Tax pages to include a claim for Employee Shareholder Relief/Exemption when relevant.
  - Tidied the trust income rows on the Student & Postgraduate Loan Summary.
  - Updated the Data Entered Summary to include text from box 30 on the Non-Resident pages relating to split year treatment.
  - Ensured that boxes 34 to 38 on the Non-Resident pages are displayed in SimpleStep^(R) mode when relevant.
SA800 – Partnership Tax Return
- Incorporation of the 2024/25 SA800 Tax Return and associated supplementary pages, including updates to summaries, wizards, HMRC helpsheets and worksheets.
- Updated SimpleStep^(R) for the 2025 tax year.
- Added the ability to import rental income and expenses from Accounts Production to Partnership Property pages.
- Made further improvements to the Partnership Statement area of SimpleStep^(R).
- New and added improvements to Summaries:
  - NEW Partnership Allocation Summary.
  - Renamed Partnership Business Summary to Partnership Trade Summary and improved capital allowances section when forms mode has been used.
- Added a validation message if the ‘traditional accounting scheme’ box has not been ticked for limited liability partnerships.
- Updated logic for displaying partners to ensure that partners with more than one partnership relationship are not shown twice.
SA900 – Trust Tax Return
- Incorporation of the 2024/25 SA900 Tax Return and associated supplementary pages, including updates to summaries, wizards, HMRC helpsheets and worksheets.
CT600 - Corporation Tax Return
- Addressed some issues relating to Research & Development Tax Credits for accounting periods starting on or after 1 April 2024.
  - Updated the computation to reflect the correct PAYE cap.
  - Updated the wording on screen and on the computation to remove reference to ‘R&D workers’ in the PAYE section.
  - Updated the display logic for the validation relating to PAYE to ensure it considers the new PAYE cap.
- Updated logic for completing box L30 (Remaining Corporation Tax liability) to ensure that it is only completed when required.
Tax Return Production General Maintenance
- Fixed an issue where tooltips were not displaying the tax year correctly.
- Added ability to enter some ‘inadmissible’ characters ( for example % ) in text style boxes for printing purposes (these will be removed from HMRC online submissions)
- Updated references to the VAT threshold to reflect the new rate from 1 April 2024.

NEW: MTD Quarterly Filer

MTD Quarterly Filer is initially available by invitation only and is currently in beta testing. General release is expected to follow in May 25.

Integration with Practice Manager for existing businesses.
Link existing businesses to HMRC records or create businesses using HMRC’s data.
Fetch quarterly obligations for businesses, together with their statuses.
Submit income and expense data to HMRC using consolidated or detailed methods.
Save import mappings to use across clients.
Trigger and retrieve HMRC calculation of year to date and estimated tax liabilities.

Accounts Production

When opening Accounts Production for the first time after running an update, if an update to the Accounts Production data is required, an information dialog will display the progress of this.
For Limited Companies and LLPs updates have been made to the signing sections of the reports:
- Where the date of signing has been entered in the report, the dotted lines above the signatures will be removed, indicating more clearly that the report is not awaiting a signature.
- The Accountant’s report and Approval Statement have been updated to remove the word ‘Signed’ above the signature.
General Maintenance
- The statutory and detailed Balance Sheet for FRS 105 will correctly refer to Creditors disclosures as 'Creditors: amounts Falling Due After More Than One Year’.
- The Company/LLP information has been updated to display directors/members at the date the report is run, where the signing date of the report has not yet been entered.
- The default import map for Xero has been updated with the following changes:
  - Account code 805 (Accruals), 810 (Income in advance) will be mapped to 5360 Accruals and deferred income.
  - Account code 947 (Student loan deductions payable) will be mapped to 5320 Other taxes and social security.
  - For LLPs account code 960 Retained earnings will be mapped to 7500 balance b/fwd (Other amounts).
  - For Partnerships account code 960 Retained earnings will be mapped to 7000 capital brought forward.
- The default import map for FreeAgent has been updated with the following changes:
  - Account code 823 (Deferred VAT) will be mapped to 5300 (VAT).
  - Account code 282 (Staff training) will be mapped to 3040 (Staff training).
- The option to apply full disclosure for FRS 102 1A will no longer be been disabled after locking the accounting period.
- Group reference will no longer be omitted from consolidated accounts where notes had been customized for the group and parent company.
- Registrar financial statements will now correctly include the Audit Information note where the accounts have been abridged for FRS 102 1A.
- The following online filling errors have been resolved and will no longer restrict the user from filing successfully with HMRC and Companies House:
  - 9999 – fatal: 2 inconsistent duplicate facts are present for ‘’Total additions including from business combinations, property, plant and equipment’’

Companies House Advanced Integration

The Companies House sync will set companies as Community Interest Companies where they are registered as such at Companies House.

Companies House Forms

Changing the registered office address or single alternative inspection location will now correctly display the prompt in Practice Manager.
The presenter details will be populated correctly on the SH01 and CS01 where share allotments have been updated within the period.

Company Incorporator

Clicking on ‘view certificate’ will now correctly open up Certification of Incorporation for LLPs.

Practice Management

A new Community Interest Company option has been added to the client record for Limited Companies (Limited by shares and Limited by guarantee). This will be synced when using the Companies House Advanced Integration.
Save time creating VAT Return work and non-TaxCalc work in bulk, using our enhanced Bulk Service Wizard.
You can now include clients' VAT return period information within your client import CSV file.
Restrict users' access to specific offices more easily, with our office dedicated option within users' client restriction page.
Track your MTD Quarterly Updates work using jobs and tasks. You can also set and change your MTD Quarterly Updates work item status.
- An overview of MTD Quarterly Updates work is available using the Filing Status - MTD Quarterly Updates widget.
General Maintenance
- Dashboards views can now be duplicated unlimited times.
- Widgets on dashboard views are now always displayed regardless of changes made in Admin Centre >Activity Types.
- Job automation successfully triggered by eSign actions now works as expected.
- Task Reports now display completed tasks and the completion date where all tasks in a Job have been completed in bulk.
- VAT period conditions in Data Mine now handle filtering multiple businesses.

TaxCalc Product Update - version 16.1.451 - Released on 14 March 2025

Please note:

With the imminent release of TaxCalc 2025, towards the end of March, this release (16.1.451) is available on request.
For Customers who have not already updated to Version 16, this update requires an installer to be run. Please ensure that you have local admin rights before attempting the update.
This release may result in a change to the IR Mark on any existing V3 CT600 returns.
Please check our System Requirements before installing this version of TaxCalc.

Product summary

Companies House Forms
Practice Manager

Companies House Forms

CS01 will display or print correctly on MAC machines.

Practice manager

Saving a newly created client in some scenarios was causing a crash, this is now successful for all scenarios.

TaxCalc Product Update - version 16.1.300 - Released on 9 January 2025

Please note:

For Customers who have not already updated to Version 16, this update requires an installer to be run. Please ensure that you have local admin rights before attempting the update.
This release may result in a change to the IR Mark on any existing V3 CT600 returns.
Please check our System Requirements before installing this version of TaxCalc.

Product summary

General
Accounts Production

General

A message ‘Error Upgrading Database’ will no longer be received when updating to this release.

Accounts Production

FRS 105 accounts for new accounting periods will now correctly display ‘Accruals and Deferred Income’ as a separate line item under the Total Assets Less Current Liabilities.
FRS 105 accounts will no longer display a blank line in the Detailed Balance Sheet for Accruals and Deferred Income, when there are no postings to account codes 5360 and 5760, for limited companies and LLPs.