Business owners have been the fastest-growing part of the UK labour force since at least 2000. Between 2000-01 and 2015-16, the number of employees grew by 15%, while selfemployment (including those operating as a sole trader or as a partner in a partnership) grew by 25% and the number of...

The IFS Green Budget 2018, in association with Citi, ICAEW and the Nuffield Foundation, is edited by Carl Emmerson, Christine Farquharson and Paul Johnson, and copy-edited by Judith Payne. The report looks at the issues and challenges facing Chancellor Philip Hammond as he prepares for his...

Firm-level investment paths are commonly characterised by periods of low or zero investment punctuated by large investment 'spikes'. We document that such spikes are important for understanding firm and aggregate level investment in the UK. We show that annual variation in aggregate investment...

Owner-managed businesses are a fast growing group; how they respond to tax is central to the challenge of how to tax labour relative to capital incomes. We use newly linked UK tax records to estimate how personal taxes affect the real economic activity and tax avoidance of company...

We use newly linked tax records to show that the large responses of UK company owner-managers to personal taxes are due to intertemporal income shifting and not to reductions in real business activity. Around half of this shifting is short-term and helps prevent volatile incomes being taxed more...