Knowledge Base - TaxCalc

	How to send a Health Check report In order to diagnose certain issues it may be necessary to send TaxCalc a Health Check. This can be completed from inside the program by using the...
	22 Apr, 2026 Views: 8188

	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...
	16 Apr, 2026 Views: 215395

	How do I carry back self employment losses? To carry back a self-employment loss for the current year to a previous year, you need to make a manual adjustment to your tax return for the year...
	16 Apr, 2026 Views: 12467

	How do I complete a return for a foster carer? You need to take certain things into account when completing the return, for example, the qualifying amounts that you can deduct from total care...
	16 Apr, 2026 Views: 46571

	TaxCalcHub.exe – Bad Image C:\WINDOWS\SYSTEM21\VCRUNTIME140.dll & MSVCP140.dll If the following messages appear when trying to run the TaxCalc application for the first time on a new Windows 10 or 11 PC, the below steps can be...
	10 Apr, 2026 Views: 1447

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	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...
	16 Apr, 2026 Views: 215395

	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: 143998

	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: 112750

	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: 108561

	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: 96826

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