Abstract We provide quasi-experimental evidence on the income tax-induced residential mobility of foreign high-income households living in Switzerland by exploiting the differential tax treatment of UK and US households. While the two groups are similar in terms of non-tax sorting preferences, US households are effectively insulated from Swiss income taxation due to the US world-wide income tax system. Thus, they provide the control group for the UK households, our treatment group. Comparing the residential choices of the two groups within a 45-minutes commuting zone of Zurich, we robustly find a residential location elasticity with respect to the net-of-tax rate of around eight. This estimate captures the ‘pure’ income tax effect on residential choice, not being downward biased by non-tax location incentives (that positively correlate with income taxes) and by coordination costs between job and residential choices, for instance.
Koethenbuerger et al. (2025) studied this question.