Recent Articles
Auto-Renewal - Frequently Asked Questions
What has changed? From April 2025, TaxCalc licences now work on an auto-renewal basis. This means that there is no change to your renewal process...
rating 28 Oct, 2026 Views: 2998
System Requirements for TaxCalc
TaxCalc is either ‘fully supported’, ‘partially supported’ or ‘unsupported’ running on the configurations of operating system as listed...
rating 28 Oct, 2026 Views: 34291
Retired Operating Systems
From time to time, it becomes necessary for TaxCalc to cease supporting certain versions of computer operating systems. Usually, these are for...
rating 28 Oct, 2026 Views: 6762
MTD Quarterly Filer - Known Errors
From initial testing we have established the following issues when setting up/submitting quarterly updates: NOTE: Please note there are HMRC...
rating 28 Oct, 2026 Views: 9940
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: 117124


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 17 Sep, 2026 Views: 230608
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: 148021
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: 117124
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: 113295
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: 106899



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