Bill.com vs Brex Banking
Choose Bill.com if managing vendor bills and approvals is your main job; choose Brex Banking if you want a business account with integrated payments and treasury options. Both offer bill pay, invoicing, accounting integrations, and ways to manage business cash. The deciding differences are how you access the account, what you pay for the software and payments, and where your cash earns a return.
Last updated October 27, 2026.
At a glance
| Dimension | Bill.com | Brex Banking |
|---|---|---|
| Account access | Cash Account requires an active BILL subscription | Business account available through Brex signup |
| Account structure | Cash Account for receiving funds and paying vendors | Checking, Treasury, and Vault |
| Software pricing | AP or AR plans from $49 per user monthly | Essentials $0; Premium $12 per user monthly |
| Cash returns | Cash Account advertises 3% variable APY | Treasury advertises up to 3.95% variable estimated return |
| FDIC coverage | Cash Account deposits eligible for up to $200M | Vault deposits eligible for up to $6M |
| ACH timing | Cash Account next-day ACH at no additional cost | Unlimited same-day ACH at no Brex fee |
| Payment fees | Standard ACH/ePayment $0.59; mailed check $1.99 | No Brex transaction fees for ACH, wires, or checks |
| Bill pay | Bill entry, approval workflows, and vendor payments | Integrated bill entry, approvals, and payments |
| Invoicing | Custom invoices and payment reminders | Branded invoices and payment tracking |
| Accounting integrations | QuickBooks Online and Xero two-way sync on Team | QuickBooks Online, Xero, and NetSuite direct sync |
| Platforms | Web; iOS and Android apps | Web; iOS and Android apps |
| Support | Live chat and phone support for all plans | 24/7 support; named manager on Enterprise |
Scroll the table sideways to compare each row.
Which should you choose?
Choose Bill.com if
- Teams focused on bill entry, approvals, and vendor payments
- Businesses that want AP and AR subscription plans
- Existing BILL subscribers seeking an integrated cash account
- Finance teams using BILL’s vendor network
Choose Brex Banking if
- Businesses seeking checking and treasury in one platform
- Teams that prioritize free same-day ACH payments
- Startups seeking a $0-per-user entry plan
- Companies that want bill pay alongside Brex cards and expense management
The verdict
Pick Bill.com if your team needs a payables-focused workflow and is comfortable paying for an AP or AR subscription; eligible subscribers can also apply for its Cash Account. Pick Brex Banking if checking, free same-day ACH, and an optional money-market treasury account are central to your decision. Compare the account terms carefully: Brex’s advertised treasury return is variable and its invested treasury funds are not FDIC-insured.
Bill.com vs Brex Banking: common questions
- Is this comparison worth considering if I mainly need business banking?
- Yes. Brex Banking offers checking, Treasury, and Vault, while eligible Bill.com subscribers can apply for a Cash Account that receives funds and pays vendors. Bill.com is the more payables-focused choice; Brex puts the business account at the center.
- Can I open a Bill.com Cash Account without a BILL subscription?
- No. Bill.com says applicants must have an active BILL subscription, be registered in the United States, and have a valid TIN or EIN.
- Is Brex Banking free?
- Brex lists Essentials at $0 per user per month and Premium at $12 per user per month, with custom Enterprise pricing. Brex says it does not charge transaction fees for ACH, wires, or checks sent through its business account, though third-party charges or other costs may apply.
- What does Bill.com cost for bill pay?
- Bill.com lists AP or AR subscriptions starting at $49 per user per month. Its published payment fees include $0.59 for a standard ACH/ePayment and $1.99 for a mailed check.
- Are the advertised cash returns directly comparable?
- No. Bill.com advertises a variable 3% APY on eligible Cash Account deposits. Brex advertises an up-to-3.95% variable estimated return on funds invested in Treasury; the top rate depends on balance tier, and Treasury investments are not FDIC-insured.
- How much FDIC coverage does each offer?
- Bill.com says eligible Cash Account deposits can receive up to $200 million in FDIC coverage through a bank sweep program. Brex advertises up to $6 million for eligible Vault deposits. Brex Treasury money-market investments are not FDIC-insured.
- Which is better for time-sensitive ACH payments?
- Brex Banking publishes unlimited same-day ACH payments at no Brex fee. Bill.com publishes next-day ACH from settled Cash Account deposits at no additional cost; its separate Pay Faster ACH service carries a fee.
- Can both connect to accounting software?
- Yes. Bill.com lists automatic two-way sync with QuickBooks Online and Xero on its Team AP and AR plan. Brex lists direct integrations with QuickBooks Online, Xero, and NetSuite on Essentials.