1. Money received by the business
Revenue
Money received by the business

2. Revenue Streams
The money coming into a business from its various activities and operations, e.g. sales revenues, sponsorship deals, merchandise, membership fees and royalties.

3. Sales Revenue/Turnover
Total sales revenue (TR) = Price x quantity sold
Average revenue = TR / quantity sold. This is effectively the average price paid by customers.
Marginal revenue = the revenue received from selling one more item.

4. Other sources of revenue
Government subsidies.
Grants.
Donations
Fund-raising activities
Sponsorship
Interest
Dividend income
Sale of assets
Royalties

5. How to increase profits
Increase sales (increases total contribution)
Decrease variable costs
Decrease fixed costs