Field notes

Scaling FX ads from $50 to $500/day

The exact spend ramp that survives Meta's behavioral cap, with the warming math operators actually use.

The short version: Scale too fast and the account dies. Scale too slow and you leave money on the table. The window between is narrower than most agencies admit, and the right ramp depends on what the account has already done.

Why $500/day is the meaningful threshold

Below $500/day, you're in the safe behavioral range for any warmed Meta account. Above it, you're approaching the ceiling and need either a fresh account or a Performance+ qualification.

The 14-day warming protocol

Days 1-3: $100/day, single ad set, broad audience. Days 4-7: $200/day, two ad sets, layered interests. Days 8-14: $300-400/day, full audience map, three creatives rotating.

When to add a second account

Triggers: CPL drift above 1.5× baseline, frequency above 4.0, ban risk score elevated. Add the second account before the first one dies, not after. Pre-warming is non-negotiable.

The €8K monthly ceiling

Meta's behavioral cap on a warmed account sits at roughly €8K of monthly spend. Above that, conversion costs climb non-linearly. The fix is account count, not account spend.

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