If you only have 30 minutes a month to review your network (scheme) fee invoice…
don’t audit it.
Auditing means getting lost in line items.
With 30 minutes, you need one thing: signal.
Use one filter question:
What changed, and is it controllable?
This is the 30-minute review we built into how we think about it at CardTraq.
I wrote up the basics here (what network fees are and why they move): https://www.cardtraq.com/network-fee-explainer
Here’s a practical 30-minute routine that works for issuers and acquirers.
—
Minute 0–5: Start with variance, not detail
Compare this month vs last month.
Flag anything that moved more than 5–10%, or is new.
—
Minute 5–15: Sort changes into three buckets
Bucket 1: Expected (volume or mix)
Bucket 2: Controllable (optional services, best-practice gaps, avoidable penalties)
Bucket 3: Abnormal (errors, one-offs, anything unclear)
If you can’t bucket a change, it’s the priority.
—
Minute 15–25: Run three high-leverage checks
Check 1: Optional services you didn’t explicitly renew
Check 2: Penalties that indicate a process breakdown
Check 3: Charges that showed up last month and are still here
If something repeats two cycles in a row, it’s not an exception anymore.
It needs an owner.
—
Minute 25–30: Write the one-sentence story
Example:
“This month was up 8%: 5% volume and mix, 2% optional services, 1% abnormal items under review.”
This works because it starts with variance, not volume.
If you can’t explain the movement cleanly, control always comes later.
Question:
Can your team explain last month’s network fee movement in one sentence today?