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 webpage provides documentation for the `ThresholdRule.Types.Basis` enum within the Google Cloud Billing Budget v1 API."],["This enum defines the basis for determining if spending has exceeded a threshold, with options including `CurrentSpend`, `ForecastedSpend`, and `Unspecified`."],["`CurrentSpend` is used when comparing the actual spend against the threshold while `ForecastedSpend` utilizes projected spending, and it can only be used with calendar-based budget periods."],["The `Unspecified` option represents a threshold basis that has not been defined."],["The documentation is available in multiple versions, with version 2.6.0 being the latest release."]]],[]]