Knowledge Base - TaxCalc

	Scaling TaxCalc on High resolution (HiDPI) Displays In some cases high resolution (also known as HiDPI) displays may not display as intended. This problem is exacerbated on physically smaller Hi...
	25 Mar, 2026 Views: 2212

	Foreign income and gains (FIG) regime replacing the remittance basis from 6 April 2026 The Foreign Income and Gains (FIG) regime replaces the previous remittance basis from 6 April 2025, although neither an individual’s nationality,...
	24 Mar, 2026 Views: 30

	HMRC Filing Exclusions and Special Cases 2025/26 HMRC Filing Exclusions 2025/26 Exclusions have arisen due to the previous introduction of additional allowances and bands for certain types of...
	19 Mar, 2026 Views: 2198

	How to create a Mailing List in Communications Centre Go to Communications Centre. Select Mailing Lists from the left-hand menu. Click Create mailing list. Enter the Name and Description of the...
	18 Mar, 2026 Views: 30

	How do I create a Mailing List using a Data Mine? Types of Mailing Lists that can be created: Client type (e.g. all individuals) Age (e.g. with a DoB greater than x) Relationship type (e.g. Is a...
	18 Mar, 2026 Views: 994

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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...
	13 Feb, 2026 Views: 208237

	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: 139947

	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: 112230

	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: 107762

	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: 93507

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