Knowledge Base Articles

personal-trust-tax-property-capital-gain-2024-25-18-24-rate

The new HMRC 18/24% rates is released with version 25.1.0 in April 2025. IRIS Personal Tax and Trust Tax calculates…

business-tax-rdec-corporation-tax-repayable-by-notional-brought-forward-figure-incorrect

R&D RDEC - You have entered Expenditure and have a 'Notional Brought Forward' figure or this was manually entered and…

personal-tax-how-to-create-add-a-new-employment-business-in-pt

This is assuming you have not already added/created this business into AP/BT first and instead adding it into PT directly.…

personal-tax-when-loading-a-specific-client-pt-closes-with-error-no-error

Personal Tax closes with no warning or you get a error message – when you select/load a client and after a few…

business-tax-llp-partnership-land-and-property-the-amount-in-box-n1-19-must-equal-the-box-in-1-39

You have a LLP/Partnership with land and property income but you get error 'The amount in box N1.19 must equal…

personal-tax-incorrect-dates-values-on-trade-and-tax-comp

When generating a Trade computation -there are unknown dates are being applied which are also giving incorrect values (which also…

business-tax-invalid-data-entry-payenicforwhichthecompanyisliableinthisaccountingperiod

This issue creates an incorrect value on the R&D box L168. This is a DEFECT in IRIS Software Version 24.3.2.…

personal-tax-period-reform-sole-trader-changed-to-partnership-get-zero-transitional-profits-why

This was a DEFECT- If you have Sole trader which has changed to a Partnership or a Partnership which has…

personal-tax-farmers-averaging-partnership-partners-values-show-a-difference-compared-to-other-partner

Both partners had exactly the same tax liability and figures entered yet the farmers averaging no longer match between the…

business-tax-capital-allowances-incorrect-if-accounting-periods-longer-than-18-months

BT is not creating 2 capital allowance periods / computations where the period is in excess of 18 months. This…