BigBank.ai
FOR BANKSFOR CONSUMERS
Movers
+0.35%Charles Schwab Banksavings apy+0.35%bunqsavings apy+0.35%Cash Appsavings apy+0.35%SoFi Money+savings apy+0.35%Lunarsavings apy+0.35%Standard Chartered Singaporesavings apy+0.35%Charles Schwab Banksavings apy+0.35%bunqsavings apy+0.35%Cash Appsavings apy+0.35%SoFi Money+savings apy+0.35%Lunarsavings apy+0.35%Standard Chartered Singaporesavings apy
BigBank.ai
Founder stack

The right stack, not a branch bank.

Bank + cards + FX + payments + payroll — as one thing, scored for how a founder actually operates.

Your recommended stack

Business bank

Mercury + Brex Treasury

No monthly fee, FDIC-swept up to $5M via sweep networks, real API.

Cards & expenses

Mercury IO card

Skip the expense-management SaaS at this scale — a card + spreadsheet is fine.

FX & multi-currency

Wise Business

Local receiving details in 9+ currencies, mid-market conversion, no minimum.

Payment processor

Stripe

Universal — same API US/EU/UK, and every finance/tax tool plugs into it.