Should I keep Stax or compare alternatives?
Stax uses a subscription model: a flat monthly fee plus interchange, with no percentage markup. Whether that pencils out well depends heavily on your volume and average ticket size, so it's worth modeling against your actual numbers.
Last reviewed July 25, 2026 · Trailhead Payments
Higher-volume merchants who can benefit from paying a flat subscription instead of a percentage markup on processing.
Strengths
- No percentage markup on interchange — just a subscription plus per-transaction cents
- Cost stays flat as volume grows, which benefits merchants above the model's natural break-even
- Month-to-month terms on the core subscription
Things to consider
- The monthly subscription is a fixed cost regardless of volume, which affects lower-volume merchants differently
- Per-transaction cents can add up for businesses with many small tickets
- Support leans on a self-serve dashboard rather than a dedicated rep at every tier
Pricing approach
Flat monthly subscription plus interchange and a small per-transaction fee — no percentage markup.
Hardware & POS considerations
Supports a defined set of terminals; compatible with most standard card-present setups.
Your volume comfortably supports the subscription cost and the flat-cost model has been working out favorably.
Your ticket sizes skew small, your volume is modest, or you'd rather work with a named advisor than a dashboard.
The subscription math is genuinely favorable for some merchants and not for others. A review models your actual volume and ticket mix against it rather than relying on a rule of thumb.
Every Trailhead Review™ looks at the same five areas.
Technology helps us pull and organize the numbers, but a person reviews every recommendation before it reaches you. Staying with your current setup is treated as a legitimate outcome, not a failure to find something to sell — sometimes the smartest move is staying put.
- Costs & Fees
- Contract & Terms
- POS & Equipment
- Software & Integrations
- Support & Growth Readiness
Content reviewed and maintained by Trailhead Payments. Have questions about how we evaluate your setup? Start a free Trailhead Review™.
See how your current setup compares.
A free Trailhead Review™ looks at your actual statement next to how Stax (formerly Fattmerchant) is typically priced — including staying put as a valid outcome.