Lifetime budget

A lifetime budget gives the platform one number for the full flight and lets it decide how to spread spend across the days. It suits campaigns with a fixed start and end, such as a launch or a seasonal sale, where the total matters more than the daily rhythm.

Each channel attaches its own conditions. ChatGPT ads treat the lifetime budget as the maximum spend across the campaign; you can switch a campaign from lifetime to daily, but not back. Google offers a campaign total budget for Search campaigns with specific start and end dates, lasting 3 to 90 days. It is available only on new campaigns, the budget type can’t be changed afterward, there are no daily spending limits, and Google never charges more than the total.

Gravity supports a total budget only with an end time and OpenAI-only delivery; otherwise campaigns use a daily budget.

Pick a lifetime budget when the end date is fixed and you want certainty about the total, and pick a daily budget for always-on campaigns. Because Google and ChatGPT lock the budget type in different ways, decide before you create the campaign. Admux campaigns already work on a total: you set the budget and end date in the draft, Admux reserves the full amount from your prepaid balance at submission, and the channel paces delivery within it. Increasing the budget of a live campaign reserves only the difference, and unused funds come back after the channel settles final spend.