The two-bank rule
Every serious cross-border founder eventually operates two accounts: one for domestic operations (USD or GBP) and one for FX and international payouts. Trying to do everything in a single account increases fees and outage risk.
Match the bank to your rails
| Need | Best Bank |
|---|---|
| USD operations | Mercury or Relay |
| GBP operations | Tide or Wise Business UK |
| Multi-currency + cheap FX | Wise Business |
| Payment gateway + banking | Airwallex |
| High deposit balance + yield | Mercury (Treasury) |
Documents to prepare once
- Entity formation certificate
- EIN or UTR
- Passport for every 25%+ owner
- Utility bill / bank statement dated in the last 3 months
- Business website URL
Account structure for growth
Adopt a variant of Profit First from day one: Operating, Tax, Payroll, Profit. Relay makes this trivial with unlimited sub-accounts; Mercury supports up to 12 sub-accounts.
Signals that reassure banks
- 3–6 months of expenses in the primary account
- Regular payouts to a matching payroll or contractor account
- Minimal cash outflow immediately after inflow
- No overlap of personal spending on business cards
Frequently asked questions
Stagger them. Open the first, wait 30 days, then apply for the second. Same-day multi-bank applications look risky to underwriters.