Mercury Business Banking vs Brex Business Account

Brex advertises estimated annualized total Treasury return of 3.58%–3.93%, with no minimum Treasury deposit. This combines a money-market fund yield with a Brex additional return. Mercury requires $250,000 across accounts to qualify for Treasury; its government money-market fund lists 3.30%–3.75% net across published balance tiers. Mercury also offers an ultra-short bond fund, a different investment. These are variable investment measures, not savings APYs or guaranteed returns.

Mercury advertises up to $5 million of FDIC coverage through partner-bank sweeps. Brex checking is held at Column N.A.; its separate Vault sweep advertises up to $6 million. Coverage depends on program conditions and applicable limits at each bank. Neither provider’s Treasury investments are FDIC-insured deposits, and principal can lose value.

Mercury core banking has no required monthly fee and includes ACH, domestic wires and standard USD international wires. Non-USD wires carry a 1% conversion fee. Brex Essentials costs $0 per user per month and includes the business account and payment tools. Optional software, currency conversion and other transaction-specific charges still matter; a free plan does not mean every service is free.

Brex is worth comparing for a team that needs cards, travel and expense workflows together. Essentials includes bill pay, reimbursements, API access and reporting. Premium costs $12 per user per month for live budgets and advanced policies and approvals; Enterprise is custom-priced. Mercury also offers cards, bill pay and API access, so these basic features are not exclusive to Brex.

Brex Treasury-to-checking transfers can complete within one hour during its 8 a.m.–3 p.m. Eastern business-day window. Vault timing needs care: the account overview says 1–2 business days, while its processing guide lists end-of-day processing before a 1 p.m. Eastern cutoff. Confirm the applicable timing before a critical payment. Mercury lists same-day liquidity for its government money-market fund and 1–2 days for its ultra-short bond fund, subject to processing conditions.

Both require an eligible registered business and exclude sole proprietorships. An LLC is different from an unincorporated sole proprietorship. Mercury supports registered partnerships and nonprofits for business banking but excludes them from Treasury. Brex requires a US-incorporated company with an EIN and US operations; monthly-payment corporate-card eligibility has additional underwriting requirements.

Is Mercury Business Banking or Brex Business Account better?

Consider Mercury for core business banking with included USD wires, and Brex when integrated expense controls are central to your workflow. Below $250,000 across Mercury accounts, Brex provides a Treasury option without Mercury’s balance eligibility threshold. Above it, compare the actual fund, fees, return measure and withdrawal schedule. Keep upcoming bills in readily available operating cash and choose paid software based on features you will use, rather than the largest advertised yield.

Does Mercury or Brex charge a monthly fee?

Mercury Business Banking: $0 (banking is free on every tier). Brex Business Account: $0 (Essentials).

Which earns more on cash, Mercury or Brex?

Brex advertises estimated annualized total Treasury return of 3.58%–3.93%, with no minimum Treasury deposit. This combines a money-market fund yield with a Brex additional return. Mercury requires $250,000 across accounts to qualify for Treasury; its government money-market fund lists 3.30%–3.75% net across published balance tiers. Mercury also offers an ultra-short bond fund, a different investment. These are variable investment measures, not savings APYs or guaranteed returns.

Which is better for expense controls?

Brex. Brex is worth comparing for a team that needs cards, travel and expense workflows together. Essentials includes bill pay, reimbursements, API access and reporting. Premium costs $12 per user per month for live budgets and advanced policies and approvals; Enterprise is custom-priced. Mercury also offers cards, bill pay and API access, so these basic features are not exclusive to Brex.

Can Mercury or Brex replace a savings account?

Their Treasury products are investments, not FDIC-insured savings accounts. Brex uses DGVXX plus a variable additional return; Mercury offers MRGXX government money market and MCRYX ultra-short bonds. Mercury’s MRGXX figures use a seven-day effective SEC yield dated October 19, while MCRYX uses a 30-day effective yield dated October 16. Brex’s total-return estimate assumes unchanged rates and reinvestment for a year. Compare risk and calculation methods before comparing percentages.

Does Mercury require a $250,000 Treasury investment?

The $250,000 threshold is a total balance across Mercury accounts for Treasury eligibility, not a required $250,000 investment. Entity eligibility also applies. Brex lists no minimum Treasury deposit, but earning its advertised return still requires invested Treasury funds; checking and Vault balances do not earn that return.

How do Mercury and Brex handle multiple legal entities?

Brex lists up to two entities, including one global entity, on Essentials; Premium expands multi-entity features and Enterprise lists unlimited entities. Mercury lets eligible organizations with shared ownership and an administrator on both accounts link for transfers. That link alone does not share account information or create consolidated reporting. Ask each provider to demonstrate reporting for your exact entity structure before choosing.

Does opening a business account guarantee a corporate credit card?

No. Account access, card eligibility, payment schedules and limits are separate decisions. Brex’s monthly-payment card has additional financial requirements. Compare the card offer and repayment terms you actually qualify for rather than assuming the business-account application guarantees a particular card limit or billing cycle.