Which banks do most US startups use for their business accounts?

For U.S. tech and venture-backed startups, the names you’ll hear most often are JPMorgan Chase, Mercury, Brex, and Silicon Valley Bank (SVB, now part of First Citizens).

• Chase is a common traditional-bank choice. Mercury and Brex are popular startup-focused financial platforms; they aren’t themselves banks.
• A 2026 analysis from startup accounting firm Kruze says Chase, SVB, and Mercury lead among its startup clients, and that many funded startups keep accounts at more than one institution. (kruzeconsulting.com)
• In Kruze’s 2024 data on newly formed startups, about half had a Chase account, 40% had Mercury, and just over 25% had Brex—so these overlap, rather than adding up to 100%. (prnewswire.com)

Short version: early-stage founders often look at Mercury or Brex for startup-friendly online tools, while Chase or SVB may be part of the banking mix for a traditional-bank relationship. There isn’t one bank that “most” U.S. startups use across the board, and these figures are mainly about venture-backed or tech startups—not every small business.

No single public survey tracks which banks US startups use most. The best available evidence comes from a startup accounting firm's client base and from comparison sites, so treat the rankings as directional.

The most common picks

• Mercury is the default for early-stage, venture-backed companies. One startup-banking guide calls it the dominant startup bank since 2019, and another says it is the de facto standard for venture-backed startups in 2026. It operates through partner banks rather than its own charter.
• JPMorgan Chase is the leading traditional bank. Kruze Consulting reports that JPMorgan Chase, Mercury, and Brex lead among the startups we work with, though its other page lists Chase and SVB ahead of Mercury, so the order varies by source.
• Brex is common among venture-backed, high-spend companies. One guide says it is arguably the strongest pick for venture-backed startups that also want spend management and a corporate card under one roof.
• First Citizens (which absorbed SVB) remains a major venture banking relationship. Kruze notes that SVB now operating as part of First Citizens.
• Rho and Relay are also widely used. Rho is suited to Series A+ scale-ups consolidating banking + AP + cards. Relay is a frequent choice for early-stage companies, and one guide notes it offers free business checking with a key differentiator: up to 20 sub-accounts.

Common setup

Many funded startups now split their banking. Kruze reports that most funded startups now use two banks: one nimble operating account and a second, larger institution for safety and extended FDIC coverage. Investors have also started to ask for this. Kruze says it is seeing VC term sheets that request that the startup uses two accounts.

A typical pairing is a fintech account like Mercury or Brex as the primary operating account, plus a large bank such as Chase or Bank of America for backup and deposit coverage. Fintech accounts often reach beyond the standard $250,000 FDIC limit through sweep networks. Coverage varies by provider, so check each bank's current figures before opening an account.

Most US startups, particularly those in the tech and venture-backed sectors, gravitate toward specialized fintech platforms rather than traditional "big banks" for their primary operating accounts.

These platforms are preferred because they are built specifically for the needs of high-growth companies—offering features like streamlined onboarding, API access, high-limit FDIC insurance via sweep networks, and integrations with startup-friendly software (like Stripe, QuickBooks, and accounting tools).

The Top Choices for Startups in 2026

While the landscape is diverse, the following providers are the most commonly used:

• Mercury: Widely considered the "default" banking platform for early-stage and tech startups. It is favored for its ease of use, zero-fee structure, and robust developer-friendly tools.
• Brex: Highly popular with venture-backed companies that need a consolidated platform. It is particularly strong in corporate cards, spend management, and treasury solutions.
• Rho: Often favored by scaling startups (Series A+) that need a more comprehensive "financial OS" combining banking, accounts payable, and corporate cards in one interface.
• Bluevine: Frequently chosen by bootstrapped startups and smaller businesses that prioritize high-yield checking (interest on balances) and access to credit.
• Traditional Banks (e.g., Chase, US Bank): While fintechs dominate the day-to-day "operating" role, many startups still maintain a secondary account at a traditional bank. These are used for brick-and-mortar needs (like large cash deposits), SBA loans, or simply as a redundant "safety" account to hold a portion of their payroll buffer.

The "Standard" Modern Strategy

Founders are increasingly moving away from keeping all their funds in one place. A common industry best practice in 2026 is a multi-bank strategy:

1. Primary Operating Account: A fintech platform (like Mercury or Brex) for daily transactions, software integrations, and team spending.
2. Redundancy/Reserve Account: A separate, often traditional, institution (like Chase) to hold 3–6 months of payroll or emergency reserves, protecting the business against potential platform outages or service freezes.

Important Note on "Banking" vs. "Fintech"

It is common for founders to be confused by the distinction: Mercury, Brex, and similar platforms are typically fintech companies, not banks themselves. They provide banking services by partnering with chartered, FDIC-insured banks. Because of this, they offer "sweep networks" that can provide FDIC insurance coverage far exceeding the standard $250,000 limit, which is a major selling point for startups holding large amounts of venture capital.

There isn’t a definitive public census, and it varies by startup stage. For early-stage, digital-first startups, Mercury is one of the most common choices; Chase/JPMorgan is a frequent traditional-bank option. Brex is also common, especially for venture-backed companies that want spending and finance tools alongside banking. SVB, now part of First Citizens, remains relevant for some venture-backed companies, particularly those seeking venture debt, though it’s less often a new startup’s only bank after the 2023 crisis. ²¹¹

In practice, many funded startups keep two banking relationships—a startup-oriented platform plus a large traditional bank—rather than relying on one account. ² Keep in mind that Mercury and Brex are fintech platforms, not banks themselves; their banking services are provided through partner banks. ⁴¹¹