A lifetime budget is the total amount you are willing to spend on a Meta campaign or ad set across its whole run, from a fixed start date to a fixed end date. Meta then decides how to spread that money over the days instead of spending a set amount each day.
How a lifetime budget works
You set a lifetime budget either at campaign level, when Advantage campaign budget shares money across ad sets, or on each ad set. An end date is compulsory. Meta then paces delivery: it may spend more on days with cheaper or better opportunities and less on others, aiming to use the full amount by the end date without going over it.
The alternative is a daily budget, an average Meta aims to spend each day for as long as the campaign runs, with some days above it and some below. A daily budget suits ongoing campaigns. A lifetime budget suits anything with a natural finish.
A lifetime budget also opens up ad scheduling, so ads run only on chosen days and hours. At the time of writing (October 2026), ad scheduling in Ads Manager has generally required a lifetime budget, though Meta changes its budget tools often, so check the options your account shows.
Why it matters
Plenty of UK marketing has fixed dates: a Christmas pop-up shop, a fortnight’s run at a London theatre, a college open evening, a Boxing Day sale, early-bird tickets for a conference. A lifetime budget fits those neatly. You know the most you will spend before you start, which makes signing off the budget and reconciling it with the accounts simple.
The trade-off is less control over when money goes out. Meta’s budget pacing can spend heavily in the first few days if it sees good opportunities, then slow down. That is normal, but it surprises people who expect the spend to be divided evenly by the number of days. Check that your ad account uses the Europe/London time zone too, or the start, end and any schedule will be out by hours.
Common mistakes
- Using lifetime budgets for always-on campaigns and extending the end date every few weeks, which disrupts delivery each time.
- Starting a short promotion on the day it begins, so the ad set is still in its learning phase for most of the run.
- Scheduling ads for office hours only when customers browse in the evening, or restricting the schedule so tightly that delivery struggles.
- Cutting the budget sharply partway through and wondering why delivery stalls.
- Mixing lifetime and daily budgets across similar campaigns, which makes spend reports harder to read.
How to act on it
Decide first whether the campaign has a genuine end. If it does, set a lifetime budget and an end date, and start a few days to a week before the dates that matter so Meta has time to learn. If you want ads to run only at certain hours, base the schedule on when your customers actually convert, which you can see in your analytics or sales data, rather than when your office is open.
Check spend each day for the first few days. A fast start is not a fault, but a campaign that has barely spent after several days points to an audience that is too narrow or a bid control that is too tight. If you raise the budget mid-flight, do it once and decisively rather than in daily nudges.
Choosing the right budget type for each campaign is part of how I plan accounts in Facebook and Instagram ads management.