1 Answers
A bachelor tax is a punitive tax imposed on unmarried men. In the modern era, many countries do vary tax rates by marital status, so current references to bachelor taxes are typically implicit rather than explicit; and given the state of tax law is very complicated, as tax accountancy concepts like income splitting can come into play.
Such explicit measures historically would be instituted as part of a moral panic due to the important status given to marriage at various times and places. Frequently, this would be attached to racial or nationalistic reasons.
More recently, bachelor taxes were viewed as part of a general tax on childlessness, which were used frequently by member states of the Warsaw Pact.