Mercury Bank vs Rho

Mercury goes way beyond the basics when it comes to the safety and protection of your funds. You get full control over ACH pulls, with the ability to approve, limit, or block them before any money leaves your account.

If something looks off, it gets flagged automatically, and nothing moves without your say-so. This is something super unique Mercury built and cuts out the risk of someone draining your account with just your routing and account numbers.

Even more impressive, Mercury offers up to $5M in FDIC insurance through its sweep network and partner banks. Instead of your funds sitting at a single institution, they are automatically spread across multiple FDIC‑insured banks, so your deposits stay protected up to that limit even if one of those banks fails.

With that, you don’t have to think about coverage limits or worry about losing access if a single institution goes down. That kind of protection is rare, and you actually see it pay off when other banks shut down or get acquired and the whole experience falls apart (e.g., when SVB shut down, a lot of our founder friends who raised money moved over to Mercury).

As it stands, Mercury is the largest and most dominant fintech banking layer with a $3.5 billion valuation and $650 million ARR. They've also raised from the most trusted VC's including Sequoia.

Mercury is now profitable as a company (both net income and EBITDA) and has been for more than three years.

With that, Mercury recently applied to be its own bank charter, which is super rare. To put it into perspective, most fintechs never get close to running their own fully regulated bank, so even applying for a national bank charter signals that Mercury is operating at a scale more on par with traditional banks.

If you have $250K in your account, you can enable Mercury's Treasury to earn interest on your cash.

You can set up auto-transfer rules like "transfer to Treasury" or "maintain target balance" that run automatically (daily, specific weekdays, or on set dates like the 1st/15th of the month). So they make it easier to actually earn higher interest rates on idle funds, effectively allowing you to treat your treasury money market account like your savings account.

And unlike other banking solutions, Mercury's Treasury feature is built core into the product, so it feels like it's just a savings account, instead of a tacked on investment account.

One of the nice things about Mercury's Treasury is that it lets you earn interest on the cash sitting in your account without hurting your day-to-day liquidity. You can keep a portion of your funds in a more liquid Treasury option (JTCXX) that still earns solid interest but can be transferred back to your checking account same-day if you need it.

Then you can put the majority of your cash into a higher-yield Treasury option (MULSX) that earns more, but takes 1–2 business days to transfer back.

In practice, this means most of your money stays optimized for better returns while you still have easy access to the funds you need for normal business expenses.

Mercury is exceptional when it comes to moving money, whether you are paying vendors or getting paid. It's one of our favorite reasons why we love Mercury, because it just makes the entire financial admin side of things in our business more enjoyable.

First, paying vendors actually doesn't feel like a chore when it comes to Mercury because they manage the admin that you'd normally have to do manually.

You can send vendors a secure form where they enter their own contact details and bank information, which Mercury then stores so you can pay them by ACH or wire in just a few clicks.

If a vendor sends you an invoice, it will also auto-pull in their details.

Mercury will then also automatically request their W-9, keep track of who has submitted one, and make 1099 filing much easier later on. This is crucial if you work with a lot of contractors.

Having vendor onboarding, payments, and tax paperwork all handled in one place is extremely rare for a bank!

And when it comes to checks, Mercury removes a lot of the manual work. You just fill out a short form, attach any PDFs like invoices or payment details, and Mercury prints the check, includes the attachments (up to 6 pages), and mails it for you.

It honestly feels less like writing checks and more like having an assistant handle it for you. This has come in super handy when we've needed to mail in forms to the government.

Mercury does not charge fees for domestic wires or USD international wires.

Mercury has one of the cleanest invoicing experiences we've used 👌 The user experience is SOOOO good, it makes invoicing feel like less of a chore.

You can quickly create and send invoices, accept payments through ACH transfer, wire transfer, or (if you connect Stripe) credit/debit cards plus Apple Pay and Google Pay, and you can track invoice status and payments right from your Mercury dashboard.

Mercury allows you to open up to 100 checking accounts and 100 savings accounts per business, at no additional cost.

So if you like to organize your money by different expenses such as operations, marketing, payroll, taxes, etc., you are able to do that, and you can even get a credit or debit account for each. Businesses who tend to like that "profit-first" approach appreciate this feature (although in general, the recommended way to set up spending for businesses is via an expense management software).

You can even set up “auto-transfer rules” that keep target balances (e.g. 30% payroll, 20% tax, etc.). Setting this up is incredibly easy and intuitive. That’s the beautiful thing about Mercury, everything is super seamless to use.

For example, for us, most of our cash stays in Treasury to earn interest only what’s needed for monthly operating expenses is moved into checking.

We keep a target balance, and if our balance ever falls below that number, money is automatically transferred. Transfers are scheduled on the 7th and 25th so that checking is topped up right before contractor payments. The point is, you can set this up totally custom for your business.

We choose to keep our federal tax account almost empty and it's only funded before before IRS payments, because otherwise you’re "wasting" money by letting cash sit there earning nothing instead of in Treasury.

If you have multiple businesses, you can set them all up within Mercury and easily jump switch views.

But, okay here’s when it gets crazy. Mercury also has Mercury Personal Banking, which gives you the same incredible user experience but for your personal banking. You can also toggle into your personal bank account from the same user login, which is fantastic.

When they launched Mercury Personal, it cost $240/year to use (and we paid it, because it was that good), but now they give Mercury Personal accounts for free to any Mercury Business users.

This means if you have a Mercury Business account, you can give all of your employees a Mercury Personal account, for free! It’s a fantastic perk because trust us, there is no better personal banking solution that is as smooth and solid as Mercury Personal.👌

With Mercury, you can set up user roles and permissions. For example, you can set who can initiate payments, vs who may only get "view only" capabilities.

There are 6 preset roles: Admin (Full Control), Employee, Accountant, Finance Lead, Money Mover, and Read Only.

This matters if you have different employees that you want to delegate financial admin.

You can also set approval rules, like for example, any payment over $10,000 must be approved by a founder. You can enable per payment approvals, set an amount threshold, and choose who needs to approve (a specific person or a group). Approvals work for all outgoing payments including bills, ACH, and wires.

You can also set up dual admin approvals (aka two admins need approval before money goes out). This isn’t just a tiny feature for approving invoices, it's a core way Mercury lets you structure who can move money and how, so you have real control and guardrails over cash.

It's no secret that Mercury absolutely takes the cake when it comes to user experience. Many users have called Mercury's interface as "one of the best I've ever seen". It's modern, intuitive, and just feels incredibly smooth to use.

And that has been our personal experience using Mercury for the past several years, there is no way you can get us to switch after experiencing such beauty 😍

Rho doesn’t have “every ACH debit needs your explicit approval” workflows, so it works more like a traditional bank. Once you share your routing/account number, ACH debits can hit your account and you manage risk through monitoring yourself, and disputes rather than pull approvals.

On the contrary, Rho uses a huge sweep network (400+ banks) to offer up to $75 million in FDIC insurance per entity. Your money is split into chunks of up to $250K and parked across many FDIC‑insured banks.

Despite the large FDIC coverage, Rho itself was last publicly valued at around $1.5B in its Series C round and they're likely not yet profitable.

Rho Treasury requires a $350K minimum to even unlock it, which is a bit of a bottle neck for most early business owners (unless you've raised funds).

Once you have access, you can set up auto-transfer rules (called "auto-sweeps"). They work between checking and Treasury to maintain your cash flow. You can set a minimum checking balance (e.g., $50K operating float) and top-up amount (min $25K).

Rho Treasury also gives you the option to keep some cash in a same day liquid pool while putting the majority into a higher-yield option that takes 2–3 business days to pull back, letting you get better returns without fully sacrificing cash flow.

While Rho handles payments well, it's more of a "finance team tool" rather than a "delightful minimalist banking solution like Mercury for example.

Rho lets you forward invoices into a dedicated Bill Pay inbox, where it scans invoices and create draft bills so you're not hand-entering everything. From there, you can send invoices for approvals so invoices can be reviewed before you make payment. You can also make payments in bulk (batch approving a bunch of invoices) to help streamline workflows.

It handles vendor management, where you can store profiles, and payment methods in one place.

It streamlines W-9 collection and 1099 filing workflows automatically, which is helpful for high-contractor teams.

With Rho you initiate the payment, and it handles printing and mailing the physical check along with any attachments. This is especially useful for vendors (or landlords) who still insist on paper.

Domestic and International wires to a USD account are free.

Rho allows you to create and send invoices, but it's user experience is not as "delightful" as Mercury.

Rho lets you create multiple operating accounts (checking sub‑accounts) so you can organize cash for things like payroll, taxes, and other expenses.

Rho does not support "Profit First" style banking.

You can have a rule that says "transfer $5K each month to this account" but you cannot have rules like "take 10% of all deposits into this account and spread it to these 10 sub‑accounts" the way Mercury or Relay's auto-transfer rules can do percentage of balance/percentage of incoming funds across multiple destinations.

So if this type of banking is important to you, skip Rho as you'll need to do it manually.

If you run multiple businesses, you can associate multiple business entities with a single Rho user login and easily switch between them.

That said, Rho does not offer any Personal Banking solutions so you'd still need a totally separate bank for that (we are obsessed with Mercury Personal Banking, which is why we use Mercury for both business + personal, but hey, even if you use Rho for business we'd recommend switching to Mercury for personal use!).

Rho gives you granular control over who can see what and who can move money.

There are six pre‑set roles: Account Owner, Administrator, Department Owner, Employee, Bookkeeper, and Investor each with its own permission bundle.

Rho has a full payment approval framework that lets you define when transactions need sign‑off, how many people must approve, and which specific users are allowed to approve.

You can create rules like "for X dollar amount or above, require Y approvals," and assign one or more approvers. For example, you might require one approver for payments over $1k and two approvers for payments over $10k.

Rho has a good user experience for finance teams, but if you're a business owner or founder you'll find the interface feels a lot more dense than something like Mercury.