Stax
Stax's cheapest published rate is $99/mo + IC + 8c (card-present). Pricing model: subscription. Monthly fee: $99/mo. Dispute fee: Not published. Cross-border: Passed through interchange. FX: Passed through interchange.
Tier table (vendor-published)
| Tier | Rate | Notes |
|---|---|---|
| Up to $150K/yr | $99/mo + IC + 8c/15c | - |
| $150K-$250K/yr | $139/mo + IC + 8c/15c | - |
| $250K+/yr | $199+/mo + IC + 8c/15c | - |
Source: https://staxpayments.com/pricing/ (verified 2026-06-19).
What Stax is best for
- Mid-market merchants processing $250K+/yr where the subscription cost amortises across many transactions.
- Higher-ticket B2B where per-transaction cents matter more than percentage markup.
Hidden costs and gotchas
Subscription model with 0% markup over interchange plus per-transaction cents. Best for higher-volume merchants where the subscription is amortised across many transactions.
- $99/mo entry rises to $139 and $199/mo as you climb tiers.
- Dispute fees not published.
When this vendor wins, when it loses
FAQ
When does Stax beat Helcim?
Stax has a 0% markup but a fixed monthly. Helcim has 0.15% markup but no monthly. Stax beats Helcim once your annual GMV is high enough that the 0.15% saved exceeds the $1,188-$2,388/yr subscription. Roughly $800K+/yr.
Is the subscription worth it under $150K/yr?
No. Below that, Helcim, Square, or even Stripe's flat rate typically deliver lower all-in cost.
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