Is zakat obligatory on a commercial project that began in October 2014 with a capital of 50,000 Egyptian pounds, and how is it calculated with the fluctuating increase and decrease of the capital?

The type of commercial project has not been specified, which makes it difficult to determine how its zakat should be calculated. For some projects, zakat is due only on their income or profit (such as rented properties), while for other projects (such as trade goods), it is due on both the profit and the value. In any case, if zakat was not paid after it became due, you have erred and are required to repent. The duty was to inquire about its rulings from the beginning of the project.