Mercury vs Square
Mercury and Square are both payments & billing tools. Mercury is aimed at small businesses and developers, while Square is aimed at small businesses. Mercury costs less, from $29.90/mo versus $49/mo for Square. Both have a free plan.
| Pricing | Freemium · $30 | Freemium · $49 |
| Starting price | $29.90/mo | $49/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Built for | Small businesses, Developers | Small businesses |
| Platforms | web, ios, android | web, ios, android |
| Country | US · 2017 | US · 2009 |
| Rating | — | — |
Choose Mercury if
US-incorporated startups.
- Fast, founder-friendly onboarding
- No monthly fees on core
- Excellent UI
Look elsewhere if: Non-US entities.
Choose Square if
Small brick-and-mortar businesses in supported countries.
- Free POS software
- Simple flat-rate pricing
- All-in-one for small businesses
Look elsewhere if: Online-only SaaS (Stripe).
Mercury vs Square pricing
Mercury
- Mercury$0Banking, cards, invoicing, bill pay, expense management
- Plus$29.90/moRecurring invoices, ACH debit invoicing; 15% off annually
- Pro$299/moRelationship manager, NetSuite categorizations
Square
- Square Free$0In-person 2.6% + 15¢, online 3.3% + 30¢
- Square Plus$49/location/moIn-person 2.5% + 15¢, online 2.9% + 30¢
- Square Premium$149/location/moLowest fees: in-person 2.4% + 15¢, online 2.9% + 30¢
- Square ProCustomFor businesses processing over $250K/year
Mercury · Key features
- Business checking and savings
- Debit and credit cards
- Treasury and yield
- Invoicing and bill pay
- International wires
- API and integrations
Cons
- US entities only
- Cash deposits limited
- Not a full-service bank
Square · Key features
- POS software and hardware
- Online store and invoices
- Appointments and loyalty
- Payroll and team management
- Banking and loans
- Restaurant and retail features
Cons
- Limited country availability
- Fees higher than interchange-plus at scale
- Account holds possible
Mercury vs Square: FAQ
Which is cheaper, Mercury or Square?
Mercury starts at $29.90/mo and Square at $49/mo. Both prices are checked on the vendors' own pricing pages.
Do Mercury and Square have a free plan?
Yes, both Mercury and Square have a free plan; paid plans add more usage and features.