Mainspring Pay

Accept payments without rate hikes or hidden fees.

Transparent, flexible pricing on secure rails, backed by live 24/7 U.S. support.

Instant Calendly, skip the forms.

What You Get

What You Get

Transparent Pricing
  • Pick your fit: interchange-plus, surcharge / cash-discount, or dual pricing

  • Meet-or-Beat promise with locked-in rates, no price increases

  • Zero surprise Junk or Technology Fees

Every Way to Pay
  • Chip, tap, swipe, Apple Pay, Google Pay, Samsung Pay, contactless/NFC

  • Flat-fee ACH for high-ticket invoices and recurring payments

  • Seamless in-store, mobile, and online checkout flows

Faster Deposits
  • Next-day funding: money can hit your account as early as 9 a.m.

  • Real-time payout tracker in your dashboard

24/7/365 Live Support
  • U.S.-based specialists—phone, chat, or email, anytime

  • Lightning fast response time, even during peak hours

  • White-glove onboarding and ongoing optimization

Security & Fraud Protection
  • PCI DSS Level 1 + EMV + Point-to-Point Encryption

  • End-to-end tokenization keeps card data off your network

  • Custom velocity, geolocation, and rule-based fraud filters

Book your Appointment!

Schedule a consultation with our expert advisors to keep your finances strong and secure. Easy booking, personalized guidance.

All the Tools,
None of the Tricks

Leading Competitors

  • Surprise rate hikes

  • Hidden “junk” fees

  • Ticket-only support

  • Slow funding delays

Mainspring Pay

  • 🔒 Rates locked for the life of your account

  • 🚫 Zero hidden fees ever

  • 📞 Live U.S. experts 24/7

  • ⚡ Next-day deposits

Built to Scale With You

Our payment network moves tens of billions of transactions every year with 99.9% uptime:

  • Enterprise-grade reliability without enterprise red tape

  • Bank-grade security at every touchpoint

  • Infinite scalability—grow from pop-up to multi-location without switching providers

Ready to Go Global?

Ready to See How Much You Could Save?

In ten minutes we’ll review your last statement and show exactly where you can cut costs: no pressure, no hassle. To get a quote, book above or send your most current statement to our VP, julie.pounds@themainspring.ai

Ready to Go Global?

Ready to See How Much You Could Save?

In ten minutes we’ll review your last statement and show exactly where you can cut costs: no pressure, no hassle. To get a quote, book above or send your most current statement to our VP, julie.pounds@themainspring.ai