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 `ThresholdRule.Types.Basis` is 2.6.0, which is part of the Google Cloud Billing Budgets V1 API."],["This API enum defines the `Basis` for determining if spending has exceeded a threshold, providing options like `CurrentSpend`, `ForecastedSpend`, and `Unspecified`."],["`CurrentSpend` compares current expenses against the threshold, while `ForecastedSpend` projects future spending for the period, though the latter is limited to calendar period budgets."],["There are various previous versions available for the `ThresholdRule.Types.Basis` API, starting from version 1.1.0."]]],[]]