CalculatedSpend
class CalculatedSpend
The spend objects that are associated with this budget. The actualSpend tracks how much you've used, cost, usage, RI units, or Savings Plans units and the forecastedSpend tracks how much that you're predicted to spend based on your historical usage profile.
For example, if it's the 20th of the month and you have spent 50 dollars on Amazon EC2, your actualSpend is 50 USD, and your forecastedSpend is 75 USD.