Prudential capital controls

Prudential capital controls are ways of financial regulation that aim to mitigate risk to the financial system as a whole, usually taking the form of residency-based measures such as transaction taxes, other limits, or outright prohibitions that a nation's government can use to regulate flows from capital markets into and out of the country's capital account. Prudential capital controls aim to mitigate systemic risk, reduce business cycle volatility, increase macroeconomic stability, and enhance social welfare.

Source: Wikipedia — Prudential capital controls (CC BY-SA 4.0)