Mercury for startups: why it's our bank account

Founder Stack · Slot 03 of 5 · Capital & Banking · Reviewed 2026-10-15

Short answer: Mercury, as a startup's first and primary account: $0 a month with free ACH, domestic wires, and USD international wires, open to US-formed companies whose founders live anywhere, and an IO card with no personal guarantee.

Traditional banking is friction disguised as security. Clean financial API, instant multi-user controls, and zero legacy paperwork for venture-backed entities.

Scorecard

Seed cost: $0/mo; free domestic wires
Setup (est.): < 30 min
Keyboard: Partial
Reviewed: 2026-09

Visit Mercury Startup programs

Why Mercury holds the slot

A startup's first account should open quickly and cost nothing while the company has no revenue. Mercury's free plan has no monthly fees, overdraft penalties, or minimum balances, and sends ACH, domestic wires, and USD international wires for $0.

It accepts companies formed in the US or a US territory, and founders don't need to be US citizens or residents, which matters for teams that incorporate in Delaware from abroad. Ramp, by contrast, asks for $25,000 already in a US business bank account.

What it costs a startup

The free plan covers banking, cards, receipt matching, reimbursements, bill pay, and basic invoicing. Plus is $35 a month, or $29.90 billed annually, and adds recurring invoices and unlimited 1099 filings. Pro is $350 a month, or $299 billed annually, and adds a relationship manager and NetSuite categorizations. Paid plans are priced per company, not per user.

Non-USD wires cost 1%. Mercury Treasury opens to companies with more than $250,000 at Mercury; it invests in money market funds, which are covered by SIPC, not FDIC insurance.

Where Mercury falls short

Mercury is built around the account, not around company spend. It is the wrong fit when:

You need expense policies, multi-step approvals, and live budgets across a growing team. Brex Premium and Ramp Plus go further; Ramp connects to Mercury, so you can run both.
You want the highest FDIC sweep. Mercury is a fintech, not a bank: deposits sit with Choice Financial Group and Column N.A. and are swept for coverage up to $5M. Brex offers up to $6M.
You want a card limit above your balance. The IO card is cash-underwritten, so its balance can't exceed what the company holds at Mercury.
You're a sole proprietor. Mercury doesn't accept sole proprietorships.

What would cost Mercury the slot

The free plan earns the slot. If Mercury started charging for ACH or domestic wires, set a minimum balance, or moved paid plans to per-user pricing, we would reopen it. Plus and Pro prices rose between our September and October 2026 reviews; the free plan didn't change.

Compared with alternatives

Mercury vs Brex
Mercury as the company's primary account; Brex when employee cards, spend policies, and travel are the problem to solve.
Mercury vs Ramp
Mercury for a startup's first and primary account; Ramp once spend control across a team is the job, and the company already holds $25,000 or more in a US business bank account.

Facts are checked against each vendor's own pages, listed below; the slot decision is our opinion. Prices change, so confirm on the vendor's site. How slots are won and lost is in the methodology; see also disclosures.