Use current spend as the basis for comparison against the threshold.
ForecastedSpend
Use forecasted spend for the period as the basis for comparison against
the threshold.
FORECASTED_SPEND can only be set when the budget's time period is a
[Filter.calendar_period][google.cloud.billing.budgets.v1.Filter.calendar_period].
It cannot be set in combination with
[Filter.custom_period][google.cloud.billing.budgets.v1.Filter.custom_period].
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["The latest version of the `Google.Cloud.Billing.Budgets.V1.ThresholdRule.Types.Basis` is 2.6.0, with several previous versions available, including 2.5.0, 2.4.0, 2.3.0, 2.2.0, 2.1.0, 2.0.0, 1.2.0, and 1.1.0."],["`Basis` is an enum used to determine how spend is compared against a budget threshold, with all versions containing the same namespace, `Google.Cloud.Billing.Budgets.V1`."],["The `Basis` enum includes three fields: `CurrentSpend`, which compares against the current spend; `ForecastedSpend`, which uses predicted spend and is limited to calendar period budgets; and `Unspecified`, which represents an unspecified threshold basis."],["The `Basis` enum is contained within the `Google.Cloud.Billing.Budgets.V1.dll` assembly."]]],[]]
