A quick note on the screenshots:<\/strong> These screenshots come from a Search campaign in an account that uses Australian dollars. Performance Max shares most of these signals. Google calculates impression share for Performance Max<\/a> from both Search and Shopping impressions, so add the same columns to your PMax view. If a column shows no data for your campaign, lean harder on the other criteria.<\/p>\n\n\n\n Your PMax campaign is ready to scale when it has run long enough to stabilize and it hits your cost per conversion or return on ad spend goal. Scaling a weak campaign only makes you lose money faster.<\/p>\n\n\n\n Check these points first:<\/p>\n\n\n\n If any of these points fail, fix them before you touch the budget. Once they all pass, work through the six criteria below.<\/p>\n\n\n\n The Limited by budget<\/a> status means your average daily budget sits below the amount Google estimates you need to capture all available traffic at your current settings. This is the easiest signal to spot, since it appears right in the Status column.<\/p>\n\n\n\n In this account, the first campaign shows “Eligible,” while the second shows “Limited by budget.” Now look at the budget for each campaign.<\/p>\n\n\n\n The limited campaign runs on A$460 per day. Click the status to see Google’s budget ideas. For campaigns with this status, Google shows budget ideas in a popup<\/a> on the Campaigns page.<\/p>\n\n\n\n Keep one catch in mind. Google notes that campaigns using Maximize conversions count as limited by the budget you set by design. So this status alone does not prove that more money will help. You need the next five signals to confirm it, and to scale before Google flags the issue at all.<\/p>\n\n\n\n Your budget usage tells you how much of your monthly budget you have actually spent. When it stays above about 85% to 90%, your campaign uses nearly all of its money and may need more to enter more auctions.<\/p>\n\n\n\n Google sets a monthly spending limit of 30.4 times your average daily budget<\/a> for most campaigns. You can build a custom column that compares your spend against that limit.<\/p>\n\n\n\n Here, the two campaigns used 90.84% and 84.88% of their monthly budgets. Both sit close to their full spend.<\/p>\n\n\n\n Follow these steps to build the column:<\/p>\n\n\n\n Set your date range to the last 30 days when you read this column, since the formula assumes a full month. Google can also spend up to two times your average daily budget on busy days, so judge the monthly figure, not one day.<\/p>\n\n\n\n The Search lost IS (budget) column shows the share of auctions you missed because your budget ran out. It gives you the clearest guide for how much to add.<\/p>\n\n\n\n The first campaign lost 11.02% of its auctions to budget. The second lost 25.47%, and that gap triggered its “Limited by budget” status.<\/p>\n\n\n\n A simple way to read this number: if you raise the budget by about the same percentage, you may enter up to that many more auctions. That math oversimplifies how the auction works, but it gives you a sensible starting point.<\/p>\n\n\n\n For the second campaign, a 25% increase would take the budget from A$460 to A$575 per day. Then you watch your cost per conversion and average cost per click closely to see what that extra money buys.<\/p>\n\n\n\n Click share shows the portion of all available clicks your ads won. A low click share suggests your competitors win most of the traffic, so you may need to bid or spend more to compete.<\/p>\n\n\n\n Look at click share for each ad group or asset group, not just the campaign total. A campaign total can hide big differences.<\/p>\n\n\n\n In this account, the campaign showed 34.66% overall. Its groups ranged from 26.27% to 53.78%. The group at 53.78% wins more than half the clicks, so it has less room to grow. The group at 26.27% has more room.<\/p>\n\n\n\n Use these rough ranges as a guide:<\/p>\n\n\n\nIs your PMax campaign ready to scale?<\/h2>\n\n\n\n
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Criterion 1: The campaign shows “Limited by budget”<\/h2>\n\n\n\n
![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/1-limited-by-budget-status-1024x563.png\")
<\/figure>\n\n\n\n![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/2-daily-budget-limited-campaign-1024x563.png\")
<\/figure>\n\n\n\nCriterion 2: Your budget usage stays above 85%<\/h2>\n\n\n\n
![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/3-budget-usage-column-1024x569.png\")
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![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/4-budget-usage-formula-1024x293.png\")
<\/figure>\n\n\n\nCriterion 3: You lose auctions because of budget<\/h2>\n\n\n\n
![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/5-search-lost-is-budget-1024x493.png\")
<\/figure>\n\n\n\nCriterion 4: Your click share has room to grow<\/h2>\n\n\n\n
![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/6-click-share-by-ad-group-1-1024x683.png\")
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![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/7-search-lost-is-rank-1024x537.png\"){kind=icon}
<\/figure>\n\n\n\n![\"\"](\"https:\/\/ecomclips.com\/blog\/wp-content\/uploads\/2026\/11\/8-search-lost-top-is-budget-1024x544.png\")
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