PaymentSpring vs Fattmerchant Comparison
PaymentSpring
Starting at Contact for pricing
- Large Enterprises
- Medium Business
PaymentSpring is a leading provider of Payments Solutions that enable merchants to accept credit & debit payments with ease. With its robust Feature-Rich Software, industry-applicable Support, competitive Pricing and a p…
Fattmerchant
Starting at $49 /Month
- Large Enterprises
- Medium Business
Fattmerchant, now branded as Stax, is a payment processing platform for small and mid-sized US businesses that charges a flat monthly subscription plus interchange cost rather than a per-transaction markup, which lowers…
PaymentSpring leads on user satisfaction with a 4.5-star rating across 2 reviews.
PaymentSpring vs Fattmerchant — at a glance
| Feature | PaymentSpring | Fattmerchant |
|---|---|---|
| Rating | 4.5 / 5 | 3.9 / 5 |
| Reviews | 2 | 122 |
| Starting price | Contact for pricing | $49 /Month |
| Free trial | No | No |
| Free version | No | No |
| Best for | Large Enterprises, Medium Business, Small Business | Large Enterprises, Medium Business, Small Business |
| Category | Payment Processing Software | Payment Processing Software |
| Platforms | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS | SaaS/Web/Cloud, Mobile - Android, Mobile - iOS |
| API | — | Available |
| Support modes | Business Hours, Online | 24/7 (Live rep), Online |
| Certifications | SOC 2, GDPR | SOC 2, GDPR |
| Data residency | Global | US |
Key differences between PaymentSpring and Fattmerchant
- Pricing: Fattmerchant starts at $49 /Month. PaymentSpring pricing is not publicly listed.
- User satisfaction: PaymentSpring scores higher with a 4.5-star average.
- Deployment: PaymentSpring supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS; Fattmerchant supports SaaS/Web/Cloud, Mobile - Android, Mobile - iOS.
PaymentSpring vs Fattmerchant — find the better fit before you commit.
Which tool fits your team best
Which is actually cheaper for your team size
Where each product wins, per real buyers
Most Payment Processing Software tools look identical on paper. This comparison cuts to the differences that matter — pricing structure, team fit, and what real buyers found after signing up.
Biggest differences
Features
Pricing
Buying details
Security
Buyer feedback
Integrations
Product tour
Other options
Talk to an expert Talk to an expert | Talk to an expert Talk to an expert |
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PaymentSpring vs Fattmerchant: Biggest differences
Start here before you go deeper into features.
Best for small to medium merchants needing robust, easy credit and debit payment processing.
- You are a retail or e-commerce business seeking streamlined payment acceptance.
- Your finance or operations team values strong customer support tailored to your industry.
- You prefer competitive pricing and a feature-rich platform with ongoing product development.
- You require transparent, self-serve pricing to simplify budgeting and procurement.
- Your business demands extensive customization or complex integrations without sales involvement.
Large Enterprises, Medium Business, Small Business
PaymentSpring typically suits Large Enterprises and Medium Business. Fattmerchant tends to fit Large Enterprises and Medium Business better. The right choice depends on your team size, workflow, and whether a free trial matters.
Description | PaymentSpring is a leading provider of Payments Solutions that enable merchants to accept credit & debit payments with ease. With its robust Feature-Rich Software, industry-applicable ... Read More about PaymentSpring | Fattmerchant, now branded as Stax, is a payment processing platform for small and mid-sized US businesses that charges a flat monthly subscription plus interchange cost rather than a ... Read More about Fattmerchant |
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Entry Level Pricing |
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Free Trial Availability |
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User RatingsBased on verified Spotsaas reviews | ||
Best Company Size | Small BusinessMedium Business | — |
Get pricing help | Get pricing help |
Software Demo
Demo |
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How do PaymentSpring and Fattmerchant Compare on Features?
Total Features | 7 Features | 8 Features |
|---|---|---|
Unique Features | No unique features | No unique features |
Get Quote | Get Quote |
Compare PaymentSpring and Fattmerchant on pricing
Review starting price, plan structure, and free-trial access side by side so you can see which option fits your budget and buying process.
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Pricing Page | Pricing information not available |  |
PaymentSpring vs Fattmerchant: Other Details
Organization Types supported |
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Platforms Supported |
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Modes of support |
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API Support |
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Get help choosing | Get help choosing |
PaymentSpring vs Fattmerchant Security & Compliance
Certifications, data handling, and security controls for IT and compliance evaluators.
SOC 2 | ✓ Yes | ✓ Yes |
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HIPAA | ✗ No | ✗ No |
GDPR | ✓ Yes | ✓ Yes |
Data Encryption | ✓ Yes | ✓ Yes |
Data Residency | 🌐 Global | 🇺🇸 US |
PaymentSpring User Reviews & Rating Comparison
User Ratings | ||
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Rating Distribution | ||
Spotsaas Editor’s POV generated by AI | Buyer sentiment Buyers generally express satisfaction with PaymentSpring's feature set and support, though pricing opacity is a common concern. What buyers like
Common complaints
| Buyer sentiment Buyer sentiment is mixed to positive across 183 reviews, with clear strengths and a few common watchouts. What buyers like
Common complaints
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Pros and Cons |
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Positive Reviews | No reviews available for the product | No reviews available for the product |
| Negative Reviews | No reviews available for the product | No reviews available for the product |
Media and Screenshots
Screenshots |  2 Screenshots | No screenshots available. |
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Videos |  2 Videos |  3 Videos |
Top Alternatives to PaymentSpring and Fattmerchant in 2026
Alternatives |
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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].
Frequently asked questions
- Which is better, PaymentSpring or Fattmerchant?
- PaymentSpring edges out the other on user ratings (4.5 vs 3.9). That said, the best pick depends on your use case — use the comparison tables above to evaluate each dimension.
- Do PaymentSpring and Fattmerchant offer a free trial?
- Neither PaymentSpring nor Fattmerchant currently lists a free trial.
- What is the starting price of PaymentSpring vs Fattmerchant?
- PaymentSpring starts at Contact for pricing. Fattmerchant starts at $49 /Month.
- What are the top alternatives to PaymentSpring?
- Top alternatives to PaymentSpring include Payline Data, BluePay, Opayo, MagicPay, SecurePay.
- What are the top alternatives to Fattmerchant?
- Top alternatives to Fattmerchant include Merchant One, Heartland Payment Processing, Shift4 Payments, Global Payments, PaymentSpring.