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"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe latest version of the \u003ccode\u003eGoogle.Cloud.Billing.Budgets.V1.ThresholdRule.Types.Basis\u003c/code\u003e 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.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eBasis\u003c/code\u003e is an enum used to determine how spend is compared against a budget threshold, with all versions containing the same namespace, \u003ccode\u003eGoogle.Cloud.Billing.Budgets.V1\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eBasis\u003c/code\u003e enum includes three fields: \u003ccode\u003eCurrentSpend\u003c/code\u003e, which compares against the current spend; \u003ccode\u003eForecastedSpend\u003c/code\u003e, which uses predicted spend and is limited to calendar period budgets; and \u003ccode\u003eUnspecified\u003c/code\u003e, which represents an unspecified threshold basis.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eBasis\u003c/code\u003e enum is contained within the \u003ccode\u003eGoogle.Cloud.Billing.Budgets.V1.dll\u003c/code\u003e assembly.\u003c/p\u003e\n"]]],[],null,[]]
