Shared budget

A shared budget lets money flow to whichever campaign needs it that day, which suits campaigns that are interchangeable.

It also makes each campaign's budget limits unreadable: a campaign can show lost impression share to budget because its neighbour spent first.

1. Open Tools, then Budgets and bidding, then Shared budgets.
2. See each budget's amount and the campaigns that use it.
3. Compare the campaigns' spend to see which takes most.
4. Give a campaign its own budget in its settings if needed.

Three campaigns share €100 a day. One of them takes €80 most days, and the other two show as limited by budget. Giving the big one its own budget makes each campaign's needs visible.

• Sharing a budget between campaigns with very different goals.
• Reading impression share inside a shared budget as a fact about one campaign.
• Raising the shared budget when only one campaign deserves more.

The audit checks Oppy runs on this, each with its own page.

• A shared budget hiding which campaign is capped
• Budget sitting where it is not being used
• Lost impression share that is worth buying

• Limited by budget: A campaign status meaning the daily budget holds the ads back.
• Campaign: The level of a Google Ads account that holds the budget, the bid strategy, the networks, the locations and the languages.
• Portfolio bid strategy: A bid strategy shared by several campaigns, which sets bids across all of them toward one goal.