How did Engels financially support Karl Marx's work?

Friedrich Engels provided essential financial support to Karl Marx throughout their long-standing partnership, enabling Marx to focus on his theoretical work despite periods of extreme poverty.12

Engels’s contributions were primarily funded through his career in the textile industry. In 1850, he returned to work at the firm Ermen & Engels in Manchester, initially serving as a clerk and later becoming a full partner. This position allowed him to send consistent financial aid to Marx, starting with small amounts—often in the form of £5 notes—and increasing to more substantial sums as his own financial situation improved.12

After selling his partnership in the business in 1869, Engels secured enough wealth to live comfortably and committed to providing Marx with an annual grant of £350, with promises of additional funds to cover any contingencies. This sustained support was critical, as Marx lived in significant material hardship for many years, particularly during his early time in London. Engels’s dedication to Marx’s work was absolute, and he never allowed his own criticism of capitalism to interfere with the profitable operations of the firm that funded their collaboration.12