Knowledge Base - TaxCalc

	MTD Quarterly Filer - known errors From initial testing we have established the following issues when setting up/submitting quarterly updates: Quarterly Statuses - not all periods...
	11 Nov, 2025 Views: 372

	MTD Quarterly Filer - Collateral We have collated all the information you'll need to start submitting quarterly updates to HMRC using MTD Quarterly Filing, as well as information on...
	11 Nov, 2025 Views: 732

	What happens to the TaxCalc Application when the licence expires and is not renewed? When the TaxCalc licence expires, all of the content in the database becomes read-only. The application will not allow the user to edit, file or...
	05 Nov, 2025 Views: 2364

	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...
	04 Nov, 2025 Views: 45202

	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...
	30 Oct, 2025 Views: 21500

Most Viewed

	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 >...
	29 Oct, 2025 Views: 198951

	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: ...
	13 May, 2025 Views: 135792

	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...
	14 Feb, 2023 Views: 108933

	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...
	28 Jun, 2017 Views: 103051

	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...
	25 Oct, 2022 Views: 86569

Knowledgebase