The formula M–C–M is how capitalists stay wealthy. This stands for Money – Commodity – More Money, and it basically explains how money grows in a capitalist system.

Capitalists start with money. They don’t use it just to buy things for personal use. Instead, they use it to buy commodities, like buildings, machines, raw materials, and most importantly, labor power. Labor power is the worker’s ability to work. It’s different from machines or materials because it can actually create new value.

When a worker is hired, they are paid a wage. That wage covers what they need to survive – things like food, rent, transportation, and other basic necessities. But during the workday, the worker produces more value than what they are paid. Part of the day goes toward covering their wage, but the rest of the day they are still working and that extra time is called surplus labor. The value created during that unpaid time becomes surplus value, which turns into profit for the capitalist.

After selling the finished products, the capitalist ends up with M, which means more money than they started with. That extra amount is the surplus value created by workers. This is how money becomes capital when it is used not just to buy things, but to generate more money through production.

Capitalists stay wealthy because they repeat this process over and over again. They reinvest their profits, hire more workers, produce more goods and make even more surplus value. Workers, on the other hand, follow a different pattern : C – M – C. They sell their labor power to get money, and then use that money to buy what they need. They don’t end up with more money than they started with.

So, workers work to survive, but capitalists invest to grow their wealth. The key to that growth is surplus labor – the unpaid portion of the worker’s time. That’s what allows capitalists to maintain and increase their wealth as a class.