Not sure what a lead should cost? Work it out from your own margins with the break-even calculator. Estimates for planning, not financial advice.
- Daily budget£19.73monthly budget ÷ 30.4 days
- Leads per week9.240 leads ÷ 4.33 weeks
- Weekly spend for 50 leads in one ad set£750Meta says an ad set usually leaves its learning phase after about 50 results in a week
- Learning phase checkLikely to stay in learningBelow 50 a week, Meta may mark it "Learning limited". It can still bring in leads; results just vary more from week to week.
For context: our Meta advertising for a Jersey wealth management firm brought in 200 qualified leads at a £6.33 blended cost per lead (18 January to 12 May 2026). See the case study.
Rather talk it through? Book 20 minutes to sanity-check your budget.
How this is calculated
Your monthly budget is the leads you want multiplied by what you expect each to cost. The daily figure divides that by the average month (30.4 days), and leads per week divide your monthly target by 4.33 weeks. The learning check uses Meta's own guidance that an ad set usually leaves the learning phase after about 50 results in the week after its last significant edit (Meta Business Help Centre, “About the learning phase”, checked 10 November 2026). Nothing else is assumed: no industry averages, because the honest benchmark is your own cost per lead.
What if my budget is too small for 50 leads a week?
Most Jersey businesses are in that position, and it is fine. Keep one campaign with one ad set so every result counts towards the same learning, avoid editing it more than once a week, and judge it on cost per lead over a month rather than day by day. Our guide to how long Facebook ads take to work explains what to expect, and how much Facebook and Instagram ads cost in Jersey covers typical budgets. To see how many people your ads can reach on the island, use the Jersey and Guernsey ad reach tool.