Recent Articles
HMRC Simple Assessments - why am I or my client receiving one?
From June 2025, HMRC will begin issuing Simple Assessment letters providing a detailed calculation for any tax owed by customers for income received...
rating 20 May, 2025 Views: 0
Client or Agent not authorised error when filing MTD VAT or Income Tax
If you receive a response stating 'client or agent not authorised' when trying to file a VAT return or an MTD Income Tax (IT) quarterly submission,...
rating 20 May, 2025 Views: 5746
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: 132472
MTD for Income Tax - what to expect
Making Tax Digital for Income Tax Self Assessment (MTD for ITSA) requires businesses and landlords with qualifying income to maintain digital...
rating 06 May, 2025 Views: 1305
TaxCalc bookkeeping spreadsheet transaction templates for MTD
To assist you with complying with digital links for MTD reporting, we have produced spreadsheet templates for recording transactions and summarising...
rating 01 May, 2025 Views: 7071


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 >...
rating 22 Apr, 2025 Views: 184730
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: 132472
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: 105999
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: 90399
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: 79962