# Stax (by Fattmerchant) pricing (2026): plans, cost, and compliance

**Entry price:** $99/mo (Subscription (up to $150K/yr)).
**Domain:** staxpayments.com
**Free tier:** No
**Compliance:** HIPAA No · SOC 2 Not published · GDPR Not published
**Integrations:** QuickBooks, Xero, WooCommerce, Shopify, Authorize.net, Salesforce, Zapier
**Best for:** Established SMBs processing $120K+/year wanting to eliminate percentage markups; Businesses with predictable high transaction volumes benefiting from flat-fee subscriptions; Merchants who want an all-in-one payments platform with CRM and invoicing tools
**Price tracked since:** June 2026

## Plans

| Plan | Monthly | Annual | Billing | Notes | Source |
| --- | --- | --- | --- | --- | --- |
| Subscription (up to $150K/yr) | $99 | — | flat | Membership pricing at 0% markup over direct-cost interchange. For annual processing up to $150K: $99/month subscription plus per-transaction interchange + $0.08 in-person (EMV terminal) or interchange + $0.15 online/keyed. No percentage markup. monthlyUsd corroborated via review since the official page returned 403. | staxpayments.com |
| Subscription ($150K-$250K/yr) | $139 | — | flat | Membership pricing at 0% markup over interchange. For annual processing $150K-$250K: $139/month subscription plus interchange + $0.08 in-person or interchange + $0.15 online/keyed. monthlyUsd corroborated via review since the official page returned 403. | staxpayments.com |
| Subscription ($250K+/yr) | $199 | — | flat | Membership pricing at 0% markup over interchange. For annual processing $250K+: from $199/month subscription plus interchange + $0.08 in-person or interchange + $0.15 online/keyed. monthlyUsd corroborated via review since the official page returned 403. | staxpayments.com |

**Key features:** 0% interchange markup — flat per-transaction cents only above direct interchange cost; Subscription model saves high-volume merchants vs. percentage-based processors; All-in-one: invoicing, recurring billing, virtual terminal, and reporting included; PCI DSS compliant platform; Dedicated account manager on higher tiers.

**Plan limits:** Minimum $99/month subscription regardless of processing volume; Designed for businesses processing at least $5K–$10K/month to break even vs. flat-rate processors; No percentage markup over interchange on any plan.

## Cheaper payment processors alternatives

- [Authorize.net](https://frontdeskreview.com/software/payment-processors/authorize-net/) — from $25/mo

Sources: 1 · Last verified 2026-06-13
Provenance: https://staxpayments.com/pricing/ (official; membership/subscription model at 0% interchange markup. The official page returned HTTP 403 on fetch, so per-tier subscription $/mo and per-transaction cents were corroborated via a 2026 pricing review)
Canonical: https://frontdeskreview.com/software/payment-processors/stax/
Cite: Per The Front Desk Review, Stax (by Fattmerchant)'s entry plan was $99/mo as of 2026-06-13 — https://frontdeskreview.com/software/payment-processors/stax/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl