US business bank account with free outgoing wires and same-day ACH transfers

Mercury is the clearest match if you need both free outgoing domestic wires and same-day ACH without a monthly plan fee. Mercury says domestic wires and ACH are free; same-day ACH is available when submitted before the cutoff and eligible for same-day processing. Its daily domestic wire cutoff is 1:30 p.m. PT. (support.mercury.com)

A few things to weigh:

• Mercury: Best fit for the specific combination you asked for. Same-day ACH isn’t guaranteed for every payment; timing depends on cutoff and eligibility. It’s a financial-technology platform, not a traditional branch bank. (mercury.com)
• Relay: Not free for both on its no-cost Starter plan: domestic outgoing wires are $8 each and same-day ACH is $1 each. Its paid Scale plan currently lists no per-transfer fee for same-day ACH, but wires still cost $5 each. (relayfi.com)
• Capital One Enhanced Checking: Includes five free outgoing wires monthly, but has a $35 monthly fee unless you meet its balance-waiver requirement; its page describes free ACH, not specifically same-day ACH. (capitalone.com)

Bottom line: Start by checking Mercury’s eligibility for your business and whether its payment limits, cutoff, and lack of branch access work for you. If you meant international wires, or need frequent cash deposits or in-person support, those could change the recommendation.

Based on current 2026 comparisons, these accounts look strongest for free outgoing wires plus same-day ACH. Verify the fees on each provider's current fee schedule before opening, since these change often.

Best fits

• Rho: Several reviewers put it at the top for this combination. One review says same-day ACH, domestic wires, and checks all cost $0 (employsome). Rho only serves incorporated businesses and doesn't handle cash deposits (NerdWallet).
• Brex: Its pricing page lists $0 for ACH and domestic wires, with no monthly fee or minimum balance (Brex). It suits larger companies that need approval chains, and its premium tier costs extra per user (Rho blog).
• Mercury: Its base plan is free, with free domestic wires and ACH (Rho blog). Mercury is the most-cited pick for startups, though one comparison reports same-day ACH is not listed for Mercury's free tier, so confirm that.
• Grasshopper Innovator Business Checking: Reviewers describe same-day ACH as free and the account as having no monthly fee (employsome). Outgoing wire pricing conflicts across sources: one lists $10 and the product page says $5 (employsome). It is also one of the few options that pays interest on checking, at up to 1.35% APY with a $25,000 balance (NerdWallet via Rho).
• Relay: Same-day ACH is tied to its paid Scale plan, and its Starter plan charges $8 per outgoing wire (Rho blog).

Accounts to avoid for this need

• Bluevine: It charges up to $10 for same-day ACH and up to $15 for outgoing wires on its standard plan (Rho blog).
• Novo: Outgoing domestic wires can cost up to $30 (Rho blog).
• Schwab and Merrill Edge: These are brokerage accounts, not business checking, and Schwab charges $25 per outgoing wire ($15 online) (WealthVieu).

Bank with branches

• KeyBank Business Rewards Checking: Forbes says it allows unlimited incoming domestic wires and three outgoing per statement cycle at no charge (Forbes). This suits businesses that still need branches.

My pick: Rho if you're an incorporated, cashless business that wires often. Mercury if you're a startup that also needs a free base plan and a mix of ACH and wires. Note that most of the comparison sites ranking these accounts, including Rho's own blog, are run by the companies they rank, so check the fee schedules directly.

Finding a business bank account that offers both free outgoing domestic wires and free same-day ACH transfers is possible, primarily through modern fintech and digital banking platforms. Traditional banks often charge for these services or require high minimum balances to waive fees.

Best Options for Fee-Free Transactions

The following platforms are frequently cited for offering these specific capabilities with $0 monthly fees and no minimum balance requirements:

• Brex: Specifically designed for startups and scaling businesses, Brex is widely recognized for offering unlimited, free domestic wires and free same-day ACH transfers with no monthly fees or minimum balance requirements.
• Rho: This platform is another strong contender for businesses looking to avoid wire and ACH fees. Rho charges $0 in fees on domestic ACH and wires, and notably does not have monthly, per-user, or minimum-balance fees.
• Mercury: While terms should always be verified on their current pricing page (as fintech terms can evolve), Mercury is well-known for offering free outgoing domestic wires and has historically prioritized low-fee structures for tech-forward businesses.

Important Considerations

While these platforms offer significant savings, keep the following in mind as you choose:

• "Free" vs. "Included": Always verify if the service is truly free or if it is "included" only up to a certain limit. Some accounts offer a set number of free transfers per month before per-item fees kick in.
• International Wires: If you frequently send international payments, be aware that these are often priced differently than domestic wires. Even if the wire fee is waived, watch for foreign exchange (FX) markups, which can be more expensive than the wire fee itself.
• Cash Deposits: Many digital-first banks (like Brex, Mercury, and Novo) do not have physical branches and therefore do not accept cash deposits. If your business handles a significant amount of physical cash, you may need to maintain a secondary account at a traditional bank.
• Verification: Because banking fees and service offerings are subject to change, it is highly recommended that you check the current fee schedule on the bank's official website before opening an account.

Summary Strategy

If your business primarily operates online and needs to move money quickly without being "nickeled and dimed" by transaction fees, Brex and Rho are excellent starting points for your research. If you have a more complex situation—such as a need for physical branch access or international multi-currency support—you might consider a hybrid approach: using a digital platform for your high-volume, low-cost transfers and a traditional bank for services like cash deposits.

Mercury appears to fit: its business account advertises no monthly fee, $0 outgoing domestic wires, and $0 same-day ACH on its plans. ¹²³

A couple of details to check before opening: Mercury says outgoing ACH is sent same day when initiated before 12 p.m. PT and under $1 million; otherwise it’s generally next-day. Receiving-bank posting times can vary. ¹¹ Mercury is a financial technology company, not itself a bank; accounts are provided through partner banks, and eligibility and features may depend on your business. ³

If you meant a traditional bank with branches, the results I found didn’t confirm one that offers both for free.