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When will TaxCalc 2026 be available?
TaxCalc 2026 will be available in late March 2026. We will let you know when you can update your software and this will depend on which type of...
rating 30 Oct, 2025 Views: 21391
Top Tips and Tricks
Here are a few tips and tricks to help you in TaxCalc! Communications Centre These articles provide you with tips and tricks you can use...
rating 29 Oct, 2025 Views: 12965
Incorrect customer account details - TaxCalc could not recognise...
The Incorrect customer account details screen (pictured) will be shown if you are connecting to TaxCalc using incorrect or out of date account...
rating 29 Oct, 2025 Views: 25031
Where do I store the Companies House personal code on a client?
Please note you will need to be running the Autumn 2025 release of TaxCalc - this is a phased released w/c 27th October. To store the Companies...
rating 29 Oct, 2025 Views: 602
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 >...
rating 29 Oct, 2025 Views: 198251


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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 >...
rating 29 Oct, 2025 Views: 198251
What is a 1046 authentication error?
When you receive a 1046 error message in TaxCalc (as shown above) after attempting to file tax return, it will be due to one of the following: ...
rating 13 May, 2025 Views: 135594
Update to refunds made by HMRC
On 1st April 2015, HMRC updated their system to change the way they allocate repayments of overpaid tax. HMRC will only process the refund using...
rating 14 Feb, 2023 Views: 108741
Useful HMRC links and contact numbers
Personal Tax How to pay HMRC – Different ways to pay your Income Tax or Capital Gains Tax Online Services Helpdesk – Help signing up for...
rating 28 Jun, 2017 Views: 102891
How do I download TaxCalc?
To download and install TaxCalc on a new computer, or update it on a computer that already uses TaxCalc, we recommend viewing our video tutorial...
rating 25 Oct, 2022 Views: 86015