Recent Articles
MTD Quarterly Filer - Getting started
MTD Quarterly Filer provides the functionality to complete in-year submissions (Quarterly Updates) and integrates with TaxCalc modules, as well as...
rating 20 Jul, 2026 Views: 2015
403 Error when attempting to fetch for MTD VAT returns
The 403 error message can appear in two ways: 403 error (Client or Agent not authorised) or 403 (Forbidden) TAX_PERIOD_NOT_ENDED If you are...
rating 20 Jul, 2026 Views: 8188
MTD Quarterly Filer - known errors
From initial testing we have established the following issues when setting up/submitting quarterly updates: HMRC error '403 Client or Agent Not...
rating 20 Jul, 2026 Views: 2557
TaxCalc crashes during installation, updating or running the software (OpenGL)
For security and functionality reasons, TaxCalc have upgraded some of the components used in the program. In a small number of cases the graphics...
rating 14 Jul, 2026 Views: 17521
E-Sign (Getting Started)
TaxCalc eSign Centre dramatically reduces the time spent obtaining client approval for tax returns, VAT returns, sets of accounts and any other...
rating 13 Jul, 2026 Views: 610


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 07 Jul, 2026 Views: 222770
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: 145923
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...
rating 14 Feb, 2023 Views: 115203
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: 110924
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: 102151



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