UKMOD B2025.08 released

UKMOD version B2025.08 is now available, with model updated to reflect policy changes announced in the Government’s Autumn Statement and related OBR Fiscal and Economic Forecast, as well as updated input data and regular code amendments and corrections. More in details, the model has been amended in the following ways:

    Budget Statement 2025

    • Fuel Duty: Cancel uprating for 2026-27; extend the 5p cut in rates to 31 August 2026, then increase by 1p from 1 September 2026, 2p from 1 December 2026, and 2p from 1 March 2027
    • Universal Credit Child Element: Remove the two child limit from April 2026
    • Maintain the personal income tax and equivalent national insurance thresholds at current levels for a further three years until April 2031
    • Maintain the secondary threshold for employer contributions at current level for a further three years until April 2031.
    • Introduce separate tax rates for property income at 22% for the property basic rate, 42% for the property higher rate and 47% for the property additional rate, from 6 April 2027
    • Increase tax rates on dividend income by 2ppts at the ordinary and upper rate from 6 April 2026.
    • Increase tax rates on savings income by 2ppts at the basic, higher and additional rate from 6 April 2027 and maintain the Starting Rate of Savings limit at £5000 from April 2026 to April 2031.

    Statistics Presenter

    • Documentation now included to facilitate access to template files used by Statistics Presenter (/Documentation/Statistics Presenter Templates.pdf)
    • England included as separate category in all regional breakdowns.
    • All templates updated to reflect property income taxes as introduced in the 2025 Budget Statement.

    Data Revisions

    • Update all uprating indices, especially those reported by the OBR in their November Fiscal and Economic Forecast.
    • UK_2023_a2
    • UK_2023_b2
    • UK_2023_d2

    Policy Additions

    • A new system has been added to the model for 2030/31, aligning the model with OBR projections.
    • A new property tax has been added to the model from 2027/28 (see Budget Statement).

    See the model change-log for further details.

     

    The model is available for download from the CeMPA website at https://www.microsimulation.ac.uk/ukmod/access.