How to Calculate Prop Firm Software Cost per Trader
Cost per trader can make unlike pricing models easier to compare, but only if the denominator is consistent. “Active trader,” “account” and “funded trader” are not interchangeable.
Basic formula
Illustrative published-tier arithmetic
If Tradaxi Starter's $700 monthly base were fully utilized at its published 500-active-trader limit, base software arithmetic would be $1.40 per active trader for that month. At only 100 active traders, the same fixed fee would be $7.00 per active trader. This is not total operating cost and does not imply either volume is actually achieved.
Similarly, a €740 monthly plan at 500 traders mathematically equals €1.48 per trader before other costs. Keeping currencies separate avoids exchange-rate distortion.
Why utilization matters
Fixed tiers become more efficient as usage approaches the tier limit, then may jump when the next tier is required. Plot cost on both sides of each threshold.
Per account is not per customer
One trader may purchase multiple challenges, retries or funded accounts. If the vendor bills accounts but you divide by customers, your metric will understate marginal technology cost.
Credits require cohort modeling
When credits are consumed by funded traders, the denominator should reflect funded conversion and credit use rather than all active evaluations. A low pass rate and a high pass rate can produce different technology cost under the same challenge-sales volume.
Percentage models do not have stable unit cost
Revenue/profit-share cost per trader depends on the economic contribution of the cohort. Model the percentage directly and use per-trader output only as a secondary diagnostic.
Use two unit metrics
- Cost per active account/trader: infrastructure efficiency.
- Technology cost as % of contribution/revenue: commercial burden.
Together they show whether cost improves with scale and whether the vendor's economics consume more or less of the business margin.
Inputs to request
- Exact billable-unit definition.
- Monthly minimum.
- Included units.
- Overage rate.
- Tier transition rule.
- Funded-account/credit treatment.
- Test/internal account exclusions.
Continue with our active-account pricing guide, 500-trader comparison and break-even framework.
FAQ
What is a good software cost per trader?
There is no universal benchmark because product scope and trader economics differ. Compare vendors at the same definition and your own volume.
Should I divide by registered traders?
Usually not if the vendor bills active traders/accounts. Match the denominator to the vendor's billing definition first.