Knowledge Base Articles

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3023 articles

kba-03853

PCSR – CS01 Rejection 12675 when one or more directors has a middle name

This rejection is occurring on submissions where one or more directors has a middle name. This issue is currently under investigation with the Development team…

kba-03852

PCSR – CS01 Rejection 12677 when date of confirmation statement precedes 18/11/2025

This rejection is occurring on submissions where Date of confirmation statement is before 18/11/2025. This occurs because the tick box Include Officer Verification is missing…

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IAS23043 Business Tax- R&D RDEC CT600 L55/Tax Comp incorrect value of notional tax (19% v 25%)

If you have a CTAP period that starts prior to the start of the RDEC Merged Scheme. Therefore the calculation of notional tax should be…

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Personal Tax- Incorrect/Unknown ‘Tax deduction’ in Tax Comp

When you run the PT Tax comp - you have a Incorrect or Unknown 'Tax deduction' at the very bottom and you cannot find the…

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Companies House ID Verification change issues

Companies House went live with the new ID verification changes at 8am today (18/11/25). However, when we enabled the features in version 25.4 of the…

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Companies House ID Verification

Companies House are launching a new ID verification service for the following individual relationships: –Directors–PSC–LLP Members The relationships require an IDV code for verification purposes.…

automail-troubleshooting

Automail Troubleshooting

This topic looks at general issues with AutoMail and how to resolve them. It is advisable to check that it is not just one template…

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Business Tax- Losses: Box 160 must not be greater then Box 155. Box 165 must equal Box 155 minus Box 160

You get the warning when generating a new BT tax return Load BT and the client and correct period Edit and Losses Review and correct…

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Personal/Elements Tax- AI Anomaly Detection Tax Year Comparison

IRIS Personal Tax and Elements Tax has a new AI tool (AI powered Anomaly Detection) released in IRIS version 25.4/Latest Elements update (Explained on the…

ias22437-personal-tax-25-3-incorrect-taxed-transitional-profits-2024-and-also-the-carried-forward-to-2025

IAS22437 Personal Tax- 25.3 Incorrect taxed Transitional Profits 2024 and carried forward to 2025 (Fixed 25.4)

This is a DEFECT in IRIS version 25.3.0 where the year 2024 Apportioned Profits taxed values (STEP5) are incorrect/reverted which in turn then affects the…