Tax-benefit microsimulation model for the UK

With over 90 users across academia, government, the devolved assemblies, and the third sector, UKMOD is a tax-benefit microsimulation model based on the UK component of EUROMOD, enhanced and extended as part of a 3-year project funded by the Nuffield Foundation.

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Key features

UKMOD permits analysis of the effects of taxes and social benefits on household incomes and work incentives for the population of each nation in the UK. It is unique as it features great flexibility in the scope of its simulations and ensures cross-country consistency of the modelling approach and comparability of the results with the EU models.

UKMOD is currently the only tax-benefit model for the UK entirely open and accessible to policy makers, researchers and the interested public, with regional disaggregation and timely updates.

One model: Four countries

Separate policy systems for each of the UK’s constituent nations allow the user to focus on Scotland, Wales, Northern Ireland or England, as well as the UK as a whole. The latest public version of the model – A1.5+ – contains systems for the Scotland, Wales and the UK. The next release – in October 2020 – will also include systems for Northern Ireland and England.

Since 2016 new powers on the regulation of income tax and some benefits have been devolved to the Scottish Parliament and Government. This has led to the regular use of UKMOD by the Scottish Parliament Information Centre (SPICe) and also by NHS Health Scotland.

In Wales, the Welsh Government has modelled policies using EUROMOD. Interest has increased since the partial devolution of income tax powers to Wales since 2019.

Map of the Uk in the colours of the union flag

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