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 2025-08-04 UTC."],[[["The `ThresholdRule.Types.Basis` enum defines the basis for determining if spending has exceeded a threshold in the Cloud Billing Budget v1 API."],["The available basis options include `CurrentSpend`, which compares against actual spending, and `ForecastedSpend`, which compares against predicted spending."],["`ForecastedSpend` is only applicable when the budget's time period is defined by a calendar period and not a custom period."],["An `Unspecified` option is also available when no specific basis has been set for the threshold rule."],["The latest version of the documentation is 2.6.0, and previous versions of the documentation are also available going back to version 1.1.0."]]],[]]
