Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
This paper derives analytical expressions for aggregate personal income tax revenue obtained from a multi-schedular and multi-regional personal income tax system, with revenue divided among central and regional governments. Aggregate income tax revenue is expressed as a function of characteristics of the distribution of taxable income, making it possible to identify the sources of revenue differences among regions. The approach is applied to the tax structure in Spain, and the effects of income distribution differences among the Spanish regions are examined.