Business banking that lives entirely online, opened in an afternoon and run from a browser.
Best for a business that is paid electronically. Card payments, transfers and invoices in, transfers and card spending out. For that shape of business, online only is not a compromise at all, because nowadays everything is there anyway.
Used by Biz Spouse
Goes directly to Mercury's official site.
- Not for
- A business that regularly takes physical cash, or one that needs somebody at a counter. Cash cannot be deposited into a Mercury account, so a trade that ends the day with notes in a tin needs a bank with a branch, either instead of Mercury or alongside it.
- Difficulty
- easy to set up, about 45 minutes to a first version.
- Builds
- Getting a newly formed company a usable business checking account in a single sitting, with clean statements, virtual and physical cards, and everything visible in one screen rather than buried in a bank portal designed in 2004.
Our experience
We used Mercury to build Biz Spouse, along with other websites and web apps. That is real experience with the parts we have used, not a claim that we have tested every feature.
Opening and running a business account for an online first company
A newly formed company that needed business money separated from personal money immediately, with no interest in visiting a branch.
A working business account with clean statements and card controls, set up in a single sitting rather than over weeks. Still in use in a real business.
Watch out, Cash is the limit. A debit card gets you cash out of an ATM, but that is not the same as a teller, and cash cannot be paid in. Approval is a review, so it is not guaranteed for every business type.
Hands-on
Reality check
Where it earns its place, and where it doesn't.
Where it earns its place
What it takes off your plate
The trip to a branch to open a business account, and the wait for an appointment that goes with it.
Where it makes sense
Right after the company is formed and the employer identification number has arrived. This is the step that turns a registered company into one that can actually be paid.
What it really costs
The standard account carries no monthly fee, no minimum balance and no charge for domestic wires, transfers or checks, according to Mercury's own pricing page. Paid plans exist for businesses that want more automation and control, listed on that same page. Read it before assuming any figure, because plan pricing changes.
Where it doesn't
Marketing vs reality
It is presented as banking. Mercury is a financial technology company rather than a bank itself, and the accounts are held at partner banks. In day to day use that distinction is invisible, but it is the honest description and it is printed on Mercury's own pages.
What it does not replace
Accounting. Mercury records money moving. It does not decide how any of it should be categorised for tax, and it is not a substitute for a bookkeeper or for accounting software.
Work still left to you
You apply, you pass the review, and you connect the account to your accounting tool and to whatever takes payment from customers. None of that happens on its own.
When it's a waste
Before the entity exists. The application cannot be completed without a state filed formation document and an employer identification number, so attempting it early only wastes the afternoon.
Getting your work back out
Low to moderate. Moving away means re pointing customer payouts, any direct debits and the accounting feed. Nothing holds your money hostage, but it is an afternoon of admin rather than a click.
Goes directly to Mercury's official site.
Once you've decided
Start with Mercury
11 steps in the order they actually happen, set up, get a first working version, then only the extras your build needs. Each one says how you'll know it worked. Nothing to sign up for; the browser remembers your ticks.
- 01Decide whether an online only account fits your businessMake the one decision that determines whether this product suits you, before you spend an afternoon applying.
- 02Check that your company can actually be approvedConfirm you are applying for something you can be granted.
- 03Put the paperwork in front of you before you startTurn the application into something you complete in one sitting.
- 04Apply for the accountGet the application submitted cleanly the first time.
Goes directly to Mercury's official site.
Where it goes wrong
The problems you'll actually hit
You have taken cash and there is nowhere to put it
A customer paid in notes and your only business account is online.
Mercury does not accept cash deposits. That is a design decision rather than an oversight, and no setting changes it. The debit card lets you take cash out at an ATM, but there is no route in. Any business that receives physical money needs a second, local account, and the time to discover that is before it happens rather than after.
What to do
Keep Mercury and add one local account purely for cash
Do not move the whole business because of the cash. Open a basic account at a bank with a branch you can walk to, use it only to deposit notes, and transfer the balance across to Mercury every week or two. Mercury stays the operating account with the clean statements and the card controls, and the local account does the one job it is needed for.
From Dom · as of September 2026 · Biz Spouse runs a real business on Mercury and treats cash as the single case that needs a second account.
What to do
Read the official page so you know exactly what the card can and cannot do
Mercury's own ATM page states the withdrawal limits, notes that ATM operators may add their own fee, and says plainly that cash cannot be deposited. Read it once and the boundary is clear. A debit card getting cash out is not the same as a teller, and it is not a way to put cash in.
Official source · Mercury's own support page on ATM use and cash deposits.
Your application is sitting in review and nobody has said why
Days have passed since you applied and the status has not moved.
The review is a real check of the business, not an automatic approval, and it stalls most often on a mismatch: a company name entered differently from the formation document, a missing owner, or a document that was requested by email and never sent. The delay is usually waiting on you rather than on them.
What to do
Check the company name against the formation document, character for character
Most stalled applications are a name mismatch. Compare what you entered against the state filed document exactly, including punctuation, the entity suffix and any comma before it. If they differ, tell Mercury rather than waiting.
Biz Spouse research · Common failure pattern for entity verification, applied to this application.
What to do
Search your email, including spam, and answer the same day
A review that asks for a document and gets no reply simply sits. Search for anything from Mercury, check the spam folder, and reply with what was asked for on the day you find it. The gap between applying and banking is almost entirely made of unanswered requests.
From Dom · as of September 2026 · From running the application in a real business, where the fast path came from answering immediately.
Your business type was not accepted
The application came back declined and the business still has no account.
Mercury publishes the business types it can and cannot support, and the list is more restrictive than a high street bank. This is discovered late by most people because the eligibility page is easy to skip. Being declined is not a judgement on the business; it means this particular provider does not serve that category.
What to do
Read the eligibility page before applying anywhere else
Mercury lists the business types it supports and those it cannot. Check yours against it before you apply, and if it is on the unsupported list, do not spend a week appealing. Take the answer and go to a provider that serves your category, including a local bank, which is often less restrictive.
Official source · Mercury's own published eligibility and supported business types.
What to do
Make sure the entity itself is not the problem
Confirm the company is properly registered and in good standing in its state, that the registered agent details are current, and that the identification number matches the entity. An application can fail on the paperwork rather than the business type, and that version is fixable.
Biz Spouse research · Biz Spouse guidance on separating a paperwork failure from a category refusal.
You need something a branch would normally do
A certified document, a cashier's check, or somebody to speak to across a counter.
Online only means exactly that. Almost everything a small business needs day to day is available on the screen, which is why this trade is worth making, but the handful of counter tasks have no equivalent. They need either a second account somewhere local or a different way of solving the same problem.
What to do
Write down the counter tasks you genuinely need, then solve those only
Most owners find the list is very short or empty, because nowadays everything is there on the screen. Write down what you actually need a counter for. If the list is empty, online only is not a compromise at all. If it has two items, solve those two with a local account rather than abandoning a good operating account.
From Dom · as of September 2026 · Biz Spouse position from running an online first business on Mercury.
Business and personal money are still tangled together
The company is formed, the account is open, and customers are still paying a personal account.
Opening the account is the visible step, so it feels like the job is done. The actual separation only happens when every incoming payment route and every recurring charge has been re pointed, and each of those lives in a different tool. Nothing prompts you to finish it.
What to do
List every route money takes in and out, then change them one at a time
Write down every place money arrives from and every recurring charge that leaves: the card payment tool, the invoice template, the marketplaces, the subscriptions, the tax payments. Change each one to the business account and tick it off. This is dull and it is the actual separation. Opening the account was only the permission to do it.
Biz Spouse research · Biz Spouse method for finishing the separation the account only makes possible.
What to do
Watch the old account for a month and chase the stragglers
Something always still points at the personal account. Check it once a week for a month and re point whatever arrives. After that, anything left is a subscription you forgot you had, which is worth finding anyway.
Biz Spouse research · Biz Spouse practical follow up step, from the pattern of missed payment routes.
Prompt toolkit
5 prompts you can run today
Copy one into your own ChatGPT, Claude or Gemini. Each one points back at this page first, so it works from what we say today, then asks you a question before it starts. Some need a detail only you know; those say so.
Work out whether an online only bank account fits your business
Use this before you apply anywhere, while you are still deciding whether online only banking suits how you get paid.
Get a straight answer for your own business, not for businesses in general.
Turns the online only question into a verdict about how money actually reaches you.
Get your bank application right before you submit it
Use this in the few minutes before you submit the application.
Submit an application that clears review the first time.
Catches the name mismatches and missing owners that stall reviews for weeks.
Work out why your bank application is stuck
Use this when the application has been sitting in review with no explanation.
Find the one thing holding up your account.
Works out the most likely cause and gives you one thing to do today.
Plan what to do with physical cash when your bank is online only
Use this if any part of your business receives physical notes.
Solve the one thing an online only account cannot do.
Produces a simple arrangement for cash that keeps your online account as the main one.
Find every payment still pointing at your personal account
Use this once the business account is open, to finish the job that opening it only started.
Get every payment pointing at the business account.
Builds an ordered checklist of everything still pointing at your personal account.
Against the alternatives
When Mercury is the answer, and when it isn't
Mercury vs A local bank with a branch
Opening a business account for a newly formed company
A local branch account takes an appointment, paperwork and usually a wait, and then gives you an online portal that nobody enjoys using. Mercury takes an afternoon, costs nothing monthly on the standard account, and the interface is simple enough that you actually look at it. For a business paid electronically, the branch adds nothing you will use. Biz Spouse runs a real business this way.
When A local bank with a branch wins, The moment physical cash is involved, or when you need somebody at a counter for certified documents and similar tasks. Cash cannot be deposited into Mercury at all, and that alone decides it for a lot of trades.
From Dom · as of September 2026 · Comparison written from running a real business on Mercury, with the cash limitation confirmed on Mercury's own support pages.
Mercury vs Using your personal account for a while
Keeping business money separate from your own
Running the business through a personal account is the default because it needs no decision, and it costs you at the end of the first year when the two have to be untangled for tax. A standard Mercury account has no monthly fee, so the objection that a business account is an expense does not apply. Open it the week the company is formed and the separation is never a project.
When Using your personal account for a while wins, Genuinely never, once the company is formed. Before formation there is nothing to open an account for, so a personal account is simply what you have.
From Dom · as of September 2026 · Biz Spouse position, from having formed and banked multiple businesses.
Detail
Official help from Mercury (10), showOfficial help from Mercury, hide
- Open official page
Mercury's own list of who is eligible, which business types it can support, and what information the application asks for.
- Open official page
Exactly which formation and identity documents to have in front of you before starting the application.
- Open official page
The current plans and what is included at no monthly fee.
- Open official page
Mercury's own explanation of what the free account covers and what the paid plans add.
- Open official page
The official page on cash withdrawal limits, ATM fees and the fact that cash deposits are not supported. Read this before choosing Mercury as your only account.
- Open official page
The difference between virtual and physical cards and what each one can do.
- Open official page
How to issue a physical or virtual card from the dashboard.
- Open official page
How to cap what any card can spend, daily or monthly.
- Open official page
Mercury's own answers on moving money, pricing and how the accounts are held.
- Open official page
The official free route to the identification number the bank application requires. It is free directly from the IRS.
Plans and scoring detail, showPlans and scoring detail, hide
- Mercury , 0.00 USD / monthly
- Mercury Plus , 29.90 USD / monthly
Editorial score 4 · confidence 4/5
Biz Spouse runs a real business on Mercury, so the judgement here is first hand rather than researched. It is recommended with one condition attached rather than none: if the business handles physical cash, this is the wrong account on its own, because cash cannot be deposited into it. For an online first business it is fast, cheap and simple, and the simplicity is the point.
Official help and documentation: good
Working with AI
Mercury publishes an AI connector alongside its banking API for accounts, transactions and payments.
Works with: Any assistant that supports MCP connectors.
Worth knowing: We have not tested the connector ourselves.
Official source · as of September 2026 · Read on Mercury's own developer pages.
Where this fits
Accounting & FinanceBusiness Banking
- Local service business, fit 4 of 5
- General Small Business, fit 4 of 5. Strong for an online-only business bank account. Weaker if you regularly need cash at a counter.
What it works with, showWhat it works with, hide
- QuickBooksOften used alongside
Business banking and bookkeeping are usually run side by side.
Biz Spouse is independent. Mercury is a product of its own company, and its name and logo belong to that company. Showing them here identifies the product we reviewed; it does not mean they sponsor or endorse us.