1. Personal investments
When starting a business, you are usually yourself. This shows investors and bankers that you have a long-term commitment to your project and that you are willing to take risks.

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2. Close circle
This is money borrowed from a spouse, parents, relatives, or friends. Investors and bankers regard this as “patient capital,” which is money that will be paid back later as your business profits have increased. Close circle should note:
Family and friends rarely have much capital.
They may want to have a stake in your business.
A business relationship with family or friends should never be taken lightly.

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3. Venture Capital
From the outset, you should keep in mind that venture capitalists look for technology-driven companies with high growth potential. Venture capitalists take an equity position in the company to help it bear risk. This involves giving away some of the ownership or equity of your business to an outside party. Venture capitalists also expect a healthy return on their investment, which is often generated when the company begins selling shares to the public. 
 

4. Angels
Angels are generally wealthy individuals or retired business executives who invest directly in small businesses owned by others. They are often leaders in their own field who bring not only their experience and network of contacts, but also their technical and/or managerial knowledge. Angels tend to finance the early stages of the business with investments on the order of $25,000 to $100,000.

In return for risking your money, they reserve the right to monitor the company's management practices. In concrete terms, this often means a seat on the board of directors and a guarantee of transparency.

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5. Business incubators
Commonly, incubators will invite future companies and other start-ups to share their facilities, as well as their administrative, logistical, and technical resources. For example, an incubator could share the use of its laboratories so that a new company can develop and test its products more cheaply before starting production.
Generally, the incubation phase can last up to two years. Once the product is ready, the company usually leaves the incubator facilities to enter its industrial production phase and is left alone. Companies that receive this type of support often operate in cutting-edge sectors such as biotechnology, information technology, multimedia or industrial technology.

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6. Government subsidies
Government entities provide financing, such as grants and subsidies, that may be available to your business. Getting grants can be difficult. There can be strong competition and the criteria for prizes are often strict. Generally, you will need to provide:
A detailed description of the project
An explanation of the benefits of your project.
A detailed work plan with all costs
Details of relevant experience and background on key managers
Completed application forms where applicable

7. Bank loans
Bank loans are the most used source of financing by small and medium-sized enterprises (SMEs). Banks offer different advantages, be it a personalized service or a personalized refund. It's a good idea to shop around and find the bank that meets the specific needs of your business. In general, bankers look for companies with strong track records and excellent credit. A good idea is not enough; it has to be backed by a solid business plan. Start-up loans also typically require a personal guarantee from entrepreneurs. So this option can become prohibitive in some situations.