We investigate bunching at personal tax thresholds over a 40-year period. At kinks, where the marginal tax rate rises, we find bunching among company owner-managers and the self-employed, but not those with only employment income. Notches, where the average rate rises, provide compelling...

We exploit variation in National Insurance contributions (NICs) – the UK's system of social security contributions – and a large panel dataset to examine the effects of 35 years of employee and employer NICs reforms on labour cost (gross earnings plus employer NICs), hours of work and labour...

We investigate bunching at personal tax thresholds over a 40-year period. At kinks, where the marginal tax rate rises, we find bunching among company owner-managers and the self-employed, but not those with only employment income. Notches, where the average rate rises, provide compelling...

We exploit variation in National Insurance contributions (NICs) - the UK's system of social security contributions - and a large panel dataset to examine the effects of 35 years of employee and employer NICs reforms on labour cost (gross earnings plus employer NICs), hours of work and labour...

The UK is part-way through almost unprecedented real-terms reductions in government expenditure as the government attempts to deal with the large hole in the public finances. As part of this, the UK government has announced and is in the process of implementing £18 billion of cuts to welfare...