Tanzania, July 28 -- Dar es Salaam. Every month, many young Tanzanians carefully plan how to spend their salaries, covering rent, transport, food and savings. But before they can meet those priorities, their phones begin to ring.

A parent needs money for household expenses, a younger sibling requires school fees, a relative needs help with medical bills, another wants capital to start a business, while others seek contributions towards family events.

For many young professionals, these requests have become a monthly reality. Economists and financial experts describe the phenomenon as 'black tax'-a colloquial term referring to the expectation that employed family members will provide financial support to parents, siblings and extended re...