Recent Articles
Known issues in the latest released version of TaxCalc
Below is a list of notable issues that have been reported in recent versions of TaxCalc since their release. Other issues may exist that have not...
rating 11 Nov, 2026 Views: 65143
TaxCalc's approach to GDPR
What is GDPR GDPR stands for General Data Protection Regulation. The GDPR effectively replaced the Data Protection Act (1998) as of 25 May 2018. ...
rating 11 Nov, 2026 Views: 1342
System Requirements for TaxCalc
TaxCalc is either ‘fully supported’, ‘partially supported’ or ‘unsupported’ running on the configurations of operating system as listed...
rating 11 Nov, 2026 Views: 34849
How to backup and restore my VAT or MTD Quarterly Filer information - non-practice user
Unlike the tax return data, VAT and MTD Quarterly Filer information is stored in a database and therefore we need to ensure that you have access to...
rating 06 Nov, 2026 Views: 3146
How do I move to a new computer, including to a different operating system?
There are now Linux and Mac versions of TaxCalc for all customers except Practices running the network version. Of course, our Windows versions...
rating 06 Nov, 2026 Views: 13241


Most Viewed
TaxCalc Release Notes 2026
Below are the Release Notes for TaxCalc 2026 releases. Click to see the Release Notes for 2013-2019 > 2020-2024 > 2025 Please note we phase...
rating 04 Nov, 2026 Views: 231954
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: 148364
How to claim a refund on the SA100
When you file a self assessment return, you have the option of claiming the refund on your tax return or through an HMRC online account. Online...
rating 20 Oct, 2026 Views: 117465
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: 113649
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: 107557



Need more help
choosing the right
products?

Please contact our team on 0345 5190 882