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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 \u003ccode\u003eThresholdRule.Types.Basis\u003c/code\u003e enum in the Cloud Billing Budget v1 API defines the criteria for determining if spending has exceeded a threshold.\u003c/p\u003e\n"],["\u003cp\u003eThe available basis options are \u003ccode\u003eCurrentSpend\u003c/code\u003e, which compares against actual spending, and \u003ccode\u003eForecastedSpend\u003c/code\u003e, which compares against predicted spending for a specified period.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eForecastedSpend\u003c/code\u003e option is only usable with calendar periods, and cannot be used with custom periods.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eUnspecified\u003c/code\u003e represents an undefined threshold basis.\u003c/p\u003e\n"],["\u003cp\u003eThis documentation provides API reference information for versions 1.1.0 up to 2.6.0, with version 2.6.0 being the most recent.\u003c/p\u003e\n"]]],[],null,[]]
