The amount of money someone starts with when generating $100,000 per year in revenue can vary greatly depending on the business or income source. It is important to note that revenue is not the same as profit, as it represents the total amount of money generated before deducting expenses.

1. Self-Employed Professional: Let's consider a self-employed professional like a freelance writer or consultant. In this case, the initial investment may be minimal. They might start with just a computer, internet connection, and some basic software tools. The revenue generated will primarily depend on their skills, expertise, and ability to attract clients. For example, a freelance writer might charge $100 per article and aim to complete 20 articles per month, resulting in $2,000 in monthly revenue or $24,000 per year.

2. Small Business: If we consider a small business, the initial investment can be higher. For instance, let's consider a small online retail store selling handmade products. The entrepreneur might need to invest in inventory, website development, marketing, packaging, and shipping materials. Assuming they have invested $20,000 in inventory and another $10,000 in website development and marketing, they would need to generate $30,000 in revenue just to cover their initial investment. If they have a profit margin of 30%, they would need to generate approximately $100,000 in revenue to reach their target income of $30,000 profit.

3. Rental Property: Another example could be someone who generates $100,000 per year in revenue from rental properties. In this case, the starting capital would be the amount invested in purchasing the properties. Let's say an individual purchases a rental property for $300,000 and rents it out for $2,500 per month, resulting in $30,000 in annual revenue. To reach $100,000 in revenue, they might need to invest in multiple properties or have a higher rental income from each property.

It is important to note that these examples are simplified and do not consider various factors such as expenses, taxes, and market conditions. The starting capital required to generate $100,000 in revenue can vary significantly depending on the industry, business model, and individual circumstances.