06/08/2026
A client asked me last week why we only run one ad set on his Meta Ads account when he is spending $100 a day. Everything he had read said split into three or four and put a different audience in each.
Fair question, and the answer is just a number.
Meta Ads needs about 50 results a week inside an ad set before it stops guessing and starts running steady. Split the budget across three and each one only picks up a third of the results. None of them reach 50. So none of them settle down, and all three sit there jumping around while you swap creative trying to fix something the creative never caused.
Here is the check. Ten seconds, no tools.
Open Ads Manager. Find your cost per result. Multiply by 50, divide by 7. That is the least you can spend per day on one ad set.
His account runs at $3.57 a result, so one ad set needs $26 a day. He is on $100 a day. Enough for three, and it only needs one.
Change the number and the whole thing moves. At $50 a result the same sum says $357 a day. Same $100 budget, and now you cannot properly feed even one.
That is the part worth taking. When someone tells you to run three ad sets, they are describing what their budget can pay for at their cost per result. Not yours.
Do the sum on your own account and tell me what you got.