Mercury vs Brex in 2026

Why Mercury vs Brex Is a Different Decision in 2026

Mercury and Brex are the two names founders hear first when choosing where to put company money. Both are fintech companies, not banks. Both hold deposits at partner banks, use sweep networks for extra FDIC coverage, issue corporate cards without a personal guarantee, and bundle bill pay, reimbursements and accounting sync. They look interchangeable, but they are built around different centers of gravity, and 2026 widened that gap.

Three things changed this year:

• Brex is now part of Capital One. Capital One completed its acquisition of Brex on April 7, 2026, and Brex's site now states that Brex LLC is a wholly owned subsidiary of Capital One, N.A. Founder Pedro Franceschi remains CEO. The open question for buyers is how a large bank owner will shape pricing and product over time.
• Mercury is on the path to its own bank charter. Mercury announced in April 2026 that the OCC granted conditional approval for Mercury Bank, N.A. It still needs final OCC approval plus FDIC and Federal Reserve approvals. Mercury says nothing changes for customers yet: accounts remain at its partner banks, Choice Financial Group and Column N.A.
• Both price lists moved. Mercury now sells three tiers (free Mercury, Mercury Plus and Mercury Pro) and a separate accounting product, Mercury Books. Brex sells software plans per user (Essentials free, Premium $12 per user per month, Enterprise custom) and posts a tiered treasury return that changes with your total Brex balance.

This page compares the two line by line using the plans, fees and eligibility rules on each vendor's website in October 2026, then covers Ramp, Relay, Novo and Bluevine as alternatives. Every rate quoted is variable, so treat yields and APYs as "as of October 2026."

Comparison Table

Mercury vs Brex at a Glance

Mercury review

Overview and key features

Mercury is a business banking platform aimed at startups and online businesses. Mercury states plainly that it is a fintech company, not an FDIC-insured bank; checking and savings are provided by Choice Financial Group and Column N.A., Members FDIC. Through those banks' sweep networks, deposits become eligible for up to $5M in FDIC insurance, subject to pass-through conditions.

The core account includes checking and savings with no monthly fees, no overdraft penalties and no minimum balance. ACH (same-day and next-day), domestic wires, real-time payments, mailed checks and checkbooks are all $0. USD international wires are also free when sent as SHA (the recipient may absorb intermediary bank fees), or a flat $15 if you choose OUR so intermediary fees are charged back to Mercury. Wires in other currencies carry a 1% currency exchange fee, and Mercury supports conversion to 40+ currencies. Businesses exchanging more than $200,000 a month can ask about lower FX pricing.

Beyond banking, the free plan includes:

• IO corporate card: a charge card with 1.5% cashback, no annual fee and no personal guarantee. It is cash-underwritten, so your IO balance cannot exceed the cash you hold in Mercury. Most businesses start on an introductory limit (Mercury cites "typically up to $5,000") with daily repayment; once you hold at least $15,000 across Mercury accounts you can request higher limits and choose monthly repayment. Mercury reports IO activity to Experian, Equifax and Dun & Bradstreet. Non-USD card transactions carry a 3% fee.
• Expense management: employee cards with limits, merchant-locked cards, receipt matching and reimbursements (paid plans are needed to reimburse more than 5 active users per month).
• Bill pay: unlimited bill payments, a bill inbox with AI data extraction, approval rules, duplicate detection and splitting bills across GL codes.
• Invoicing: unlimited invoices, payment by card, Apple Pay, Google Pay, ACH or wire (Stripe card fees apply, typically 2.9% + $0.30).
• Accounting: bank feeds for QuickBooks Online, Xero and NetSuite, plus automatic categorization and rules for QuickBooks Online and Xero.
• 1099 filing: recipient management and W-9 scanning, with federal and state filing at $5 per filing on the free plan.

Mercury also sells Treasury through Mercury Advisory, LLC, an SEC-registered investment adviser. It advertises net yields "up to 4.05%" as of October 2026, but that figure applies to the $20M to $50M deposit tier (the $250K to $2M tier showed 3.28% to 3.60% net), Treasury opens only once you hold $250,000 in Mercury balances, and Mercury lists entity types it cannot yet serve (including LLCs taxed as sole proprietorships and nonprofits). Treasury carries a fee of 0.15% to 0.60% a year, set by your total Mercury deposits. Treasury funds are securities, not deposits, and are not FDIC insured.

Pricing

• Mercury: $0/month. Banking, cards, bill pay, basic invoicing, accounting sync and expense tools.
• Mercury Plus: $35/month billed monthly, or $29.90/month billed annually. Adds recurring invoices, branded invoices, invoice ACH debit at $1 per transaction, unlimited 1099 filings, reimbursements for more users, priority support, a LegalZoom discount and 6 months of free Xero.
• Mercury Pro: $350/month billed monthly, or $299/month billed annually. Adds a dedicated relationship manager, $0 invoice ACH debits, and enriched NetSuite categorization and sync.
• Mercury Books: a separate AI accounting product listed at $35/month, with the fee waived until December 31, 2026.
• Mercury Personal: $240/year on its own, included at no cost with an active business account.

Pros

• Genuinely free core banking, including domestic wires and USD international wires
• Up to $5M FDIC coverage through partner banks and sweep networks
• Flat 1.5% cashback on the IO card with no annual fee
• Clean eligibility for US companies with founders living abroad

Cons

• Treasury requires $250,000 in balances and excludes some entity types
• 3% fee on non-USD card spend and 1% on non-USD wires
• No phone support listed on the free plan; priority support starts on Plus

Who it is for, and who should skip it

Mercury fits startups, software companies, ecommerce brands and agencies that want banking, cards and payables in one place and mostly operate in USD, including non-US founders with a US company. Skip it if you are a true sole proprietor without a registered entity (Mercury requires state-filed formation documents and an EIN), if you deposit cash regularly, or if most of your team spends in foreign currencies, where Brex's local-currency cards are a better match.

Brex review

Overview and key features

Brex started as a startup corporate card and is now a spend platform with cards, expenses, travel, bill pay, reimbursements and a business account, owned by Capital One since April 2026. Brex is also a fintech, not a bank: its business account consists of checking at Column N.A., Member FDIC, plus Treasury and Vault, cash management services provided by Brex Treasury LLC (Member FINRA/SIPC).

Banking. The Brex business account is free to open, with no account minimums, monthly fees, overdraft fees or treasury transaction fees. Brex states it charges no transaction fees for domestic wires, international wires, ACH or checks; third-party banks may still take fees, and non-USD wires use an exchange rate Brex chooses. You can create up to 240 numbered checking accounts under one business account and pay in 30+ local currencies. Checking balances carry standard $250,000 FDIC coverage at Column; Vault spreads funds across 24 program banks for up to $6M in FDIC coverage.

Treasury. Funds swept into Treasury go into the BNY Dreyfus Government Cash Management Fund (DGVXX) plus an additional return paid by Brex. In mid-October 2026 Brex posted a total treasury return of 3.57% (balances up to $500K), 3.62% ($500K to $2M), 3.72% ($2M to $5M), 3.77% ($5M to $20M) and 3.92% ($20M+), with no minimum and same-hour liquidity. Treasury is not FDIC insured, and the posted return assumes rates stay static for a year.

Corporate card. The Brex card runs on Mastercard with acceptance in 210+ countries and territories. It needs no personal guarantee and no personal credit check: you apply with an EIN, and limits are based on revenue, amount raised or cash balance. Brex markets limits "up to 30x higher" than traditional business cards. Rewards are points-based: 7x on rideshare, 4x on Brex prepaid travel, 3x on restaurants, 2x on software and 1x on everything else, plus a partner perks catalog Brex values at over $350,000. Brex charges no foreign transaction fee but may apply an FX markup of up to 3%; local-currency cards in 50+ countries avoid that markup. Card statements are paid monthly by default, and customers with a Brex business account can switch to daily payment, where limits track your Brex balances.

Spend management. Custom expense policies, automated receipt capture, approval chains, live budgets, travel booking with policies, reimbursements in 40+ countries, purchase orders in bill pay, and virtual cards for vendor payments.

Integrations. Brex lists ERP connections including QuickBooks Online, QuickBooks Desktop, Xero, NetSuite, Sage Intacct, Microsoft Dynamics 365, Oracle Fusion Cloud ERP and Workday Financials (Oracle and Workday are on Premium and above), plus a long HRIS list such as Gusto, Rippling, Deel, ADP and BambooHR.

Pricing

• Essentials: $0 per user per month. Card with global acceptance and one local card program, AI custom rules, up to two entities (one global), accounting integrations, local currency wires, travel booking, bill pay, reimbursements and API access.
• Premium: $12 per user per month. Adds multiple customizable expense policies, dynamic review chains, AI compliance audit, multi-entity (US and international), customizable ERP and HRIS integrations, VAT documentation, group travel and live budgets.
• Enterprise: custom pricing. Unlimited entities, local card issuance and reimbursements, a named account manager, an admin center and implementation services.
• Smart Card: custom pricing for procurement-focused programs.

Pros

• Treasury yield with no minimum balance, unlike Mercury's $250,000 entry point
• Strongest global card program of the group, with local cards in 50+ countries
• Deep policy, approval and multi-entity controls for finance teams
• No Brex fees on wires, including international

Cons

• Points-based rewards are less predictable than a flat cashback rate
• Per-user Premium pricing adds up for large teams
• Sole proprietors and unincorporated partnerships cannot apply

Who it is for, and who should skip it

Brex suits funded startups and mid-size companies whose finance team wants to control employee spend in detail, companies with staff or subsidiaries abroad, and teams that travel a lot. Skip Brex if you are a very small business that mainly needs a checking account, if you are a sole proprietor, or if you want a simple flat cashback card without managing a points program.

Mercury vs Brex Head-to-Head

Pricing and plans

Both have a real $0 tier. Mercury charges a flat company fee to unlock extras ($35 or $350 a month, less with annual billing), so cost does not grow with headcount. Brex charges $12 per user per month on Premium, so a 25-person team pays $300 a month, and a 100-person team pays $1,200. If you need multi-entity controls and advanced policies, Brex Premium is the plan that has them; Mercury Pro's main draws are a relationship manager and NetSuite automation rather than deeper spend policy.

Fees on moving money

Domestic ACH and wires are free on both. For USD international wires, Mercury is free (SHA) or $15 (OUR). Brex says it charges no wire fees at all, domestic or international. For foreign currency, Mercury publishes a 1% conversion fee, while Brex uses "the foreign exchange rate chosen by Brex" without a published markup on wires. On cards, both can cost up to 3% on foreign-currency purchases (Mercury's flat 3% fee versus Brex's up-to-3% FX markup), but Brex lets you avoid it with local-currency cards.

FDIC coverage and safety

Mercury offers up to $5M in FDIC coverage through Choice Financial Group, Column N.A. and their sweep networks. Brex offers up to $6M through Vault across 24 program banks (standard checking at Column is covered to $250,000). In both cases this is pass-through coverage that depends on conditions being met, and money in Treasury is a securities investment, not a deposit. Mercury's pending charter and Brex's new Capital One parent are worth watching, but neither changes how your deposits are held today.

Yield and treasury

This is one of the clearest differences. Brex Treasury has no minimum and posted 3.57% to 3.92% depending on total balance in mid-October 2026. Mercury Treasury advertises net yields up to 4.05% (on $20M or more; 3.28% to 3.60% on $250K to $2M), but you need $250,000 in Mercury balances, must be a supported entity type, and pay a fee of 0.15% to 0.60% that is already netted out of the posted yields. A seed-stage company with $150,000 in the bank can earn treasury yield at Brex today but not at Mercury.

Corporate cards

Mercury's IO card pays a flat 1.5% cashback on every purchase and starts with a cash-underwritten limit and daily repayment until you hold $15,000. Brex's card uses points (up to 7x on rideshare, 3x on restaurants, 2x on software, 1x elsewhere) and underwrites on revenue, funding or cash. If your spend is mostly software and ads, Brex's 2x software category is attractive if you redeem points well; if you want predictable cash back, Mercury's 1.5% is simpler. Neither requires a personal guarantee.

Spend management

Brex is ahead for companies with layered approvals, multiple policies, travel programs and international entities. Mercury covers the essentials (card limits, merchant locks, receipt matching, reimbursements, bill approvals) and is easier for small teams, but it does not try to replace a full spend management suite.

Eligibility

Mercury requires a company formed and registered in the US or a US territory, with existing or planned US operations; founders can live abroad, except in some restricted countries. It cannot serve money services businesses, crypto exchanges, adult entertainment, cannabis, internet gambling or trusts. Brex accepts US-registered C-corps, S-corps, LLCs and LLPs, and says individual consumers, sole proprietors and unincorporated partnerships cannot open accounts. Brex does publish card qualification criteria: daily-payment cards need an equity investment of any amount, more than $500,000 a year in revenue, or a tech startup on a path to either, and monthly-payment cards for funded startups ask for at least $50,000 in cash. Mercury publishes no balance or revenue minimum for its account.

Bill pay, invoicing and accounting

Both include free bill pay and invoicing. Mercury's bill pay adds an inbox, approvals and GL splits on the free plan; recurring and branded invoices need Plus. Brex bill pay adds purchase orders and matching. On accounting, both sync with QuickBooks Online, Xero and NetSuite. Brex adds Sage Intacct, QuickBooks Desktop and, on higher plans, Oracle Fusion and Workday, which matters for larger finance teams.

Support

Mercury lists email and in-dashboard support on all plans, priority support on Plus and Pro, and a dedicated relationship manager on Pro. Brex advertises 24/7 support, with a named account manager on Enterprise.

Who should pick which

• A two-founder startup that just raised a pre-seed round: Mercury (free plan, simple card, easy setup), unless you need yield below $250,000, in which case Brex.
• A 40-person Series B company with staff in three countries: Brex (local cards, multi-entity, policies).
• An ecommerce brand paying overseas suppliers in USD: Mercury (free USD international wires).
• A company holding $1M to $5M that wants yield with minimal fuss: compare live rates; Brex has no minimum and same-hour liquidity, Mercury posts net yields by deposit tier (3.43% to 3.75% on $2M to $5M in mid-October 2026).

Ramp - Alternative for Spend Management

Overview

Ramp is a corporate card and finance automation platform covering expenses, accounts payable, procurement, travel and, more recently, banking. Ramp Business Corporation is a fintech, not a bank. Its Checking Account is a deposit account at First Internet Bank of Indiana, Member FDIC, and pays 2% APY as of October 17, 2026. Through IntraFi's ICS service, Ramp says deposits can receive FDIC insurance "up to tens of millions of dollars per depositor." A separate Investment Account (Ramp Advisory LLC, not FDIC insured) showed a 4.63% average yield on the pricing page, with a $5,000 minimum position. Ramp lists no fees, minimum deposits or transfer caps on checking, and free same-day ACH, domestic and international wires through bill pay.

The Ramp card has no personal guarantee, no annual fee and earns cashback (Ramp does not state a single rate on its pricing page). To qualify you need at least $25,000 in cash in a linked US business bank account, a US physical address, and to be a corporation, LLC or LP (nonprofits welcome). Sole proprietors are not accepted.

Pricing

• Free: $0 per user per month. Corporate card, expense management, bill pay by ACH, card, check and wire, QuickBooks Online and Xero sync, 24/7 chat support.
• Plus: $15 per user per month plus a platform fee based on team size; 20% off with annual billing; 30-day free trial. Adds AI expense review, NetSuite and Sage Intacct integrations, multi-entity support, batch payments and 24/7 phone support.
• Enterprise: custom, annual billing. Workday and Oracle integrations, local-currency cards in 30+ countries, dedicated account team.
• 1099 filing costs $0.65 per IRS filing on all plans.

Pros

• Strong expense automation and AI review on the card
• Interest-bearing FDIC-insured checking with no minimum
• Free plan is unusually complete for small finance teams
• Free wires through bill pay

Cons

• $25,000 cash minimum to qualify
• Plus adds a platform fee on top of the per-user price
• No sole proprietors

Who it is for: funded startups and mid-size companies that want the best expense and AP automation and are comfortable pairing Ramp with an existing bank. Skip it if you are under $25,000 in cash or want a single all-in-one bank first.

Relay - Alternative for Small-Business Banking

Overview

Relay is a small-business banking platform built around many accounts and accountant collaboration. Relay is a fintech, not an FDIC-insured bank; banking services are provided by Thread Bank, Member FDIC, and deposits qualify for up to $3,000,000 in FDIC coverage through Thread Bank's sweep program. You get 20 checking accounts (50 on Scale), two savings accounts, up to 50 debit cards per cardholder per account, unlimited users with permission levels, and QuickBooks, Xero and Gusto integrations. Relay accepts LLCs, corporations, general partnerships, sole proprietorships and nonprofits; sole proprietors need a valid SSN and a physical US address.

Pricing (as of October 2026)

• Starter: $0/month. 1.19% savings APY, 1% cash back on the Relay Visa credit card, $1 same-day ACH, $8 domestic wires.
• Grow: $30/month, 14-day trial. 1.87% APY, 1.25% cash back, $0.50 same-day ACH, $5 domestic wires, recurring invoices, approvals and batch payments.
• Scale: $90/month (regularly $120, discounted for a limited time), 14-day trial. 3.21% APY, 1.5% cash back, $0 same-day ACH, $5 domestic wires, 50 checking accounts, faster phone and email support.
• International wires: $5/$3/$1.50 via local networks (EUR, CAD, AUD, GBP) or $25/$22/$20 via SWIFT, plus currency exchange from 1%.

Pros

• Many sub-accounts for budgeting and profit allocation
• Accepts sole proprietors
• Up to $3M FDIC coverage through Thread Bank's sweep program
• Good fit for working with bookkeepers

Cons

• Wire fees on every plan, unlike Mercury and Brex
• Best APY and cash back require the paid Scale plan
• Fewer global features than Brex

Who it is for: agencies, trades and service businesses that budget with multiple accounts. Skip it if you send many domestic wires and want them free.

Novo - Alternative for Freelancers and Sole Proprietors

Overview

Novo is a fintech, not a bank. Banking services are provided by Middlesex Federal Savings, F.A., Member FDIC, with deposits insured up to $250,000. Novo checking has no monthly fee, no minimum balance and no transaction limits. Standard ACH and mailed checks are free, incoming wires are free, and Novo refunds third-party ATM fees up to $7 per month. It natively integrates with 40+ tools including Stripe, Square, Shopify, QuickBooks and Xero. Novo accepts sole proprietorships (with an SSN and EIN), LLCs, corporations, general partnerships and nonprofits.

Pricing and fees

• Checking: $0/month.
• Express (same-day) ACH: 1.5% (minimum $0.50, maximum $20).
• Outgoing domestic wire: up to $30, for eligible customers.
• Express check deposits carry a fee.
• International transfers: through a Wise connection, with Wise's fees shown before you confirm.
• Novo Business Credit Card: no annual fee; 2% cashback with a Novo checking balance of $5,000 or more, 1% below that. Eligibility is decided after account opening.

Pros

• Accepts sole proprietors
• Free checking with ATM fee refunds
• Simple cashback card with no annual fee
• Broad small-business app integrations

Cons

• FDIC coverage limited to $250,000
• Outgoing domestic wires cost up to $30
• No native international wires or treasury product

Who it is for: freelancers, consultants and solo owners. Skip it if you hold large balances or wire money often.

Bluevine - Alternative for Interest on Checking

Overview

Bluevine is a fintech, not a bank, offering checking through Coastal Community Bank, Member FDIC, and its program banks, with FDIC insurance up to $3M per depositor. On September 28, 2026, Bluevine announced it agreed to be acquired by Valley National Bancorp, with closing expected in early 2027 pending regulatory approvals. Bluevine accepts US sole proprietorships, corporations and partnerships, and lists live customer support by phone, email and chat. It syncs bills with QuickBooks Online, Xero, Wave and FreshBooks, and offers lines of credit up to $250K.

Pricing (as of October 2026)

• Standard: $0/month. 1.3% APY on balances up to $250K if you spend $500 a month on the Bluevine debit card or receive $2,500 a month in customer payments. Domestic wires $15, USD international wires $25, FX wires $25 + 1.5%.
• Plus: $30/month (waived with a $20,000 average daily balance AND $2,000 monthly debit card spend), one-month trial. 1.75% APY up to $250K, 20% off most payment fees, domestic wires $12.
• Premier: $95/month (waived with a $100,000 average daily balance AND $5,000 debit card spend), one-month trial. 3.0% APY on all balances, 50% off most payment fees, domestic wires $7.50, priority support.

Pros

• Interest on checking, up to 3.0% APY on Premier
• Accepts sole proprietors
• Live phone support
• Built-in lending options

Cons

• Wire and international payment fees on all plans
• Fee waivers require both a balance and a card-spend threshold
• Pending acquisition adds some uncertainty about future terms

Who it is for: established small businesses keeping meaningful balances in checking. Skip it if you send many wires or are a venture-backed startup needing corporate cards for a team.

How to Choose

Questions to answer first

1. What is your legal entity? Sole proprietors can rule out Mercury, Brex and Ramp and look at Relay, Novo or Bluevine.
2. How much cash do you hold? Under $250,000 and want yield: Brex Treasury or interest-bearing checking (Ramp, Relay Scale, Bluevine). Over $250,000: Mercury Treasury becomes available, so compare net yields after fees.
3. Where does your team spend? Mostly USD: Mercury or Ramp. Many countries: Brex.
4. How many people need cards? Brex Premium and Ramp Plus charge per user; Mercury charges per company.
5. Do you send wires often? Mercury and Brex do not charge for domestic wires; Relay, Novo and Bluevine do.
6. Which accounting system do you use? Larger ERPs (Sage Intacct, Oracle, Workday) point to Brex or Ramp.

Red flags to watch

• Advertised yields that apply only to the top balance tier or need a minimum.
• "Up to" FDIC figures that depend on sweep programs.
• Card FX fees and fee waivers that need several conditions at once.
• Plan prices with extra platform or per-transaction fees.

What to test in a trial

• Time the onboarding, including document requests.
• Issue a virtual card with a merchant lock and limit, and make a test purchase.
• Send a domestic and an international wire and compare the final cost.
• Connect your accounting system and check categorization.
• Ask support a real question and note the response time.

The Verdict

For most early-stage startups, Mercury is the better default. Its free plan covers banking, free domestic and USD international wires, a 1.5% cashback card, bill pay and accounting sync, and paid tiers are flat company fees rather than per-seat charges. Its main gaps are treasury access below $250,000 and foreign-currency card spend.

Brex wins when the card and spend controls matter more than the bank account: growing teams, companies with entities or employees abroad, and finance leads who want detailed policies and approvals. Its no-minimum treasury is also a real advantage for companies holding less than $250,000.

Among the alternatives, Ramp leads on expense automation (with a $25,000 minimum), Relay suits sub-account budgeting, Novo suits sole proprietors, and Bluevine pays interest on checking with phone support.

Conclusion

Many companies use one of these for banking and the other for cards. If you want only one, choose Mercury when the bank account is what you use every day, and Brex when it is the corporate card and spend controls. Check live yields and fees before you move money.