A government behaves differently when some of the people and activity it governs can credibly leave.
That is the core of the exit argument.
Exit does not guarantee good policy. It does not make every tax cut efficient. It does not mean that a wealthy minority should be able to externalise every social obligation onto people who are less mobile.
It does something more limited: it converts some policy choices from arguments inside a political monopoly into observable costs — lost taxpayers, founders, researchers, investment, business activity or reputation.
The empirical evidence shows that this mechanism is real. It also shows that it is uneven.
Key takeaways
- Exit can change incentives. Research finds that some highly mobile groups — star scientists, inventors and very wealthy taxpayers — respond to tax differentials by changing location.
- The response is not universal. Family, firms, language, property and professional networks make many people much less mobile, and aggregate economic effects can be smaller than headline migration stories suggest.
- Exit works best beside voice, not instead of it. Elections, rights and public institutions remain necessary because the people least able to leave still need protection inside the system.
From Hirschman’s firm to the political jurisdiction
Albert Hirschman’s framework of exit, voice and loyalty was developed for organisations, but its political application is intuitive.
Voice tries to change an institution from within.
Exit selects an alternative.
A voter who dislikes a tax, school system or regulation can campaign and vote. If the policy survives, the voter remains bound by it. A person able to move to another city, canton, state or country has an additional response.
That option matters even when most people do not exercise it. A credible possibility of departure can influence policy before the move occurs.
But credibility is the key word.
What the evidence actually shows
The evidence is strongest for groups with unusually high mobility.
Enrico Moretti and Daniel Wilson found that state personal and business tax differences in the United States affected the geographical location of “star scientists”. Ufuk Akcigit, Salomé Baslandze and Stefanie Stantcheva found that top tax rates influenced the international mobility of inventors, with highly productive and internationally exposed inventors particularly responsive.
Research on Scandinavian wealth taxation also finds migration responses. A 2024 NBER paper estimates that a one-percentage-point increase in the top wealth-tax rate reduces the stock of wealthy taxpayers by about 2%.
Those findings establish a mechanism.
They do not establish that taxation becomes impossible.
The same wealth-tax study finds aggregate effects on employment, investment and value added that are much smaller than the migration response among the affected wealthy population. Earlier research on US estate taxes similarly found mobility or avoidance responses without necessarily making the tax revenue-negative.
The evidence therefore rejects two slogans at once:
“Taxes never affect location” is false.
“Any tax on mobile people destroys the tax base” is also too strong.
The mechanism: from policy to political feedback
Exit discipline has several steps.
A jurisdiction changes a tax, regulation or service package. The change alters its attractiveness relative to credible alternatives. Some people or firms move, threaten to move or redirect future investment. That creates fiscal, employment, innovation or reputational signals. Government then decides whether to reverse, redesign or accept the cost.
Each link can fail.
There may be no credible alternative. The tax difference may be too small. The people affected may be rooted. The government may prefer the revenue or distributional result despite some exit. Or the political constituency of those who leave may be weak.
Exit is therefore a feedback channel, not an automatic veto.
Internal exit can matter more than emigration
The cleanest version of jurisdictional competition may occur inside a country.
Moving between municipalities, cantons or states can preserve language, citizenship, family access and national markets. It lowers the natural cost of exit.
This is one reason federalism can be more important than country size. A large country with meaningful subnational autonomy may create more practical political alternatives than a small unitary state.
The OECD’s work on sub-central tax competition reflects this logic. Competition is stronger for mobile tax bases, but the evidence does not show a universal race to zero. Fiscal equalisation, immobile tax bases and central rules can change the outcome.
The strongest objection: exit can make inequality worse
The strongest normative objection is not that exit never happens. It is that exit is distributed unequally.
A founder with liquid wealth, multiple passports and a remote business can react to policy faster than a nurse with a local licence, children in school and an elderly parent nearby.
If the most mobile taxpayers leave, a jurisdiction can lose revenue while obligations to less-mobile residents remain. Competition can pressure governments to tax immobile bases more heavily or reduce public services. Local governments can also compete through subsidies or preferential deals whose benefits are concentrated and costs socialised.
This is a real limit to the simplistic idea that “voting with your feet” solves politics.
A legitimate institutional model cannot assume that everyone has the same shoes.
Size, decentralisation, openness and exit
Exit is not synonymous with small government.
Size changes the distance to the next political unit but does not by itself create an alternative.
Decentralisation can create internal alternatives when subnational governments possess real powers.
Openness determines whether labour, capital and firms can cross boundaries without prohibitive barriers.
Exit is the actual ability to use the alternative.
A small closed state can have very weak exit. A large federation with open internal mobility can have strong internal exit.
International exit is legally expensive
Moving country is not changing broadband provider.
A person may need a new immigration status, housing, healthcare and school arrangements. Tax residence may not change on the same day as physical departure. Companies can acquire new residence or permanent-establishment questions when founders and directors move. Banks may re-underwrite the relationship. Assets can trigger reporting or exit-tax consequences. Property, pensions and family ties remain where they were.
These frictions explain why empirical mobility is concentrated among some groups.
They also explain why a formal “right to leave” and a practical ability to reorganise life are different things.
Exit and voice are complements
The political case for exit is strongest when it is not asked to carry the whole burden of liberty.
Voice protects people who stay. Courts protect rights even when the majority disagrees. Fiscal equalisation can preserve services in places with weaker tax bases. Common rules can address genuine spillovers. Exit provides an additional discipline by revealing that people or activity have alternatives.
A system with voice but no exit risks monopoly.
A system with exit but weak rights can become a contest in which only the mobile are protected.
The institutional objective is contestability without abandonment.
Governments should be able to choose taxes and public services. Citizens and businesses should be able to compare them. Some should be able to move. And policy should be judged not only by who leaves, but by the welfare of those who remain.
Exit makes bad policy more expensive in some circumstances.
Its discipline is real precisely because it is not costless, universal or absolute.
Sources
- Albert O. Hirschman — Exit, Voice, and Loyalty, Harvard University Press
- Charles M. Tiebout — “A Pure Theory of Local Expenditures”
- Enrico Moretti and Daniel Wilson — “The Effect of State Taxes on the Geographical Location of Top Earners: Evidence from Star Scientists”, NBER Working Paper 21120
- Ufuk Akcigit, Salomé Baslandze and Stefanie Stantcheva — “Taxation and the International Mobility of Inventors”, NBER Working Paper 21024
- Katrine Jakobsen et al. — “Taxing Top Wealth: Migration Responses and their Aggregate Economic Implications”, NBER Working Paper 32153
- OECD — Tax Competition Between Sub-Central Governments
Disclaimer
This article is general political-economy and tax-policy commentary. It does not recommend relocation or a particular tax policy. Individual migration, residence, corporate and exit-tax consequences depend on domestic law, treaties and personal facts. Empirical results for highly mobile groups should not be assumed to apply equally to the general population.
