Recent Articles
Full Expensing capital allowances available from 1 April 2023
What are the new capital allowances? From 1 April 2023 (and originally until 31 March 2026 but now permanent), companies, who are subject to...
rating 22 Jun, 2026 Views: 3913
MTD IT for agents - authorising TaxCalc to connect to HMRC
In order to use TaxCalc to submit and retrieve information for MTD income tax for your clients, HMRC require authorisation between the software and...
rating 18 Jun, 2026 Views: 43
Basis Period Transition when more than one accounting period (2023/24)
How should I enter details of multiple accounting periods for a self employment? From tax year 2024-25 onwards, self-employed individuals will be...
rating 17 Jun, 2026 Views: 7910
Basis Period in the transitional year 2023/24 - how to use the basis period calculator
Basis Period Entries in TaxCalc (transitional year 2023/24) This article explains the entries to make for the 2023/24 transitional year. HMRC's...
rating 17 Jun, 2026 Views: 7737
Multi-Factor Authentication for agents being introduced by HMRC.
HMRC is introducing Multi-Factor Authentication (MFA) for all tax agent accounts during 2026. The change is designed to improve security and protect...
rating 16 Jun, 2026 Views: 53


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 20 May, 2026 Views: 220677
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: 145337
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: 114699
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: 110272
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: 100574



Need more help
choosing the right
products?

Please contact our team on 0345 5190 882