How Much Does Mercury Cost for an Ecommerce Brand?

Mercury markets itself as free business banking, and for a lot of ecommerce brands that is literally true: $0/month, no minimums, no overdraft fees. The real cost shows up in FX. A DTC brand paying overseas suppliers and running foreign-currency ad spend pays 1% on non-USD wires, 3% on non-USD card swipes, and $29.90 to $299/month if it needs the paid tiers. Here is the true monthly total by brand size.

If you searched "how much does Mercury cost," you have probably already seen the answer Mercury wants you to see: zero. The base account really is $0/month, with unlimited ACH, free domestic wires, and free international wires in US dollars. That is not a trick. For a US-only brand under roughly $2M GMV, Mercury genuinely costs nothing.

The problem is that "how much does Mercury cost" and "how much will Mercury cost me" are different questions. The moment your brand starts paying suppliers in euros or yuan, running ad spend billed in foreign currency, or growing past five people who file expense reports, a second cost layer switches on. None of it is on the pricing headline. This post models the real number by brand size so you can see where the line actually is.

The Mercury free tier: what's actually included at $0/month

The free tier is the anchor, so it is worth being precise about what you get for nothing. Mercury's base account includes unlimited ACH transfers, free domestic USD wires, free international wires sent in US dollars (on the SHA fee option), the IO charge card, a debit card, bill pay, and basic invoicing. There is no monthly fee, no minimum balance requirement, and no overdraft fee. FDIC coverage runs up to $5M through a sweep network across partner banks.

For a large share of brands, that is the whole story. When I talk to founders running US-sourced brands under about $2M GMV, the honest answer is that Mercury costs them $0 and probably will for a while. They pay domestic suppliers by ACH, they bill in dollars, and their team is small enough that the free five-user reimbursement limit is plenty. The free tier is not a stripped-down loss leader. It is a genuinely usable business bank account.

Two limits inside the free tier are the ones to watch, because they are the most common reasons a brand upgrades. First, expense reimbursements are free for up to five active users per month. Add a sixth person who needs to get paid back for a purchase and you are pushed toward a paid tier. Second, the free tier does not include recurring invoices or ACH debit collection on invoices. If your revenue model needs either, you are on the Plus or Pro track. Neither of those is a "hidden fee" exactly, but they are the trapdoors that move a brand off $0.

Mercury Plus vs Mercury Pro: when the paid tiers make sense

Mercury sells two paid tiers on top of the free account. Plus is $29.90/month, or $23.95/month if you pay annually. Pro is $299/month, or $239.90/month annually. The tiers do not change your FX rates or your wire fees at all. What they buy is invoicing depth, reimbursement headroom, accounting integrations, and (at Pro) a dedicated relationship manager.

The pattern we see again and again is that brands upgrade for one specific feature, not for a bundle. The usual triggers for Plus are recurring invoices, ACH debit collection (so customers pay you by bank transfer for $1/transaction instead of a card fee), or crossing the five-user reimbursement limit. Plus covers up to 20 reimbursement users, then $5/user/month beyond. Pro is a different animal: you go to Pro for NetSuite categorization, unlimited invoicing API volume, fee-free ACH debit, and the relationship manager. Pro covers up to 250 reimbursement users.

Here is the part most pricing roundups skip: the tier fee is almost never the biggest number on a DTC brand's Mercury bill. At $29.90 or even $299/month, the subscription is a rounding error next to what a brand with international suppliers pays in FX. That is where the real money goes, so that is where the next section lives.

The hidden cost layer: FX fees and international card charges

Mercury charges 1% on every non-USD wire and 3% on every non-USD card transaction. Those two rates, not the subscription, decide what Mercury actually costs an ecommerce brand that buys or advertises abroad.

Start with wires. If you pay an overseas supplier in US dollars, the international wire is free (SHA) or a flat $15 (OUR, which covers the intermediary bank so your supplier receives the full amount). But if you pay in the supplier's local currency, Mercury converts at a 1% markup. That 1% sounds small until you annualize it against real supplier volume. A brand wiring $100,000/month to factories in local currency pays about $12,000/year just in FX. The table below shows how fast that scales.

The card side is sneakier because it hides inside ad spend. The IO card earns 1.5% cashback on everything, which feels like a clean win. But on non-USD transactions Mercury adds a 3% conversion fee that is non-refundable even if the charge is later reversed. So euro or pound ad spend on the IO card nets about minus 1.5% (3% cost minus 1.5% rebate), while USD spend nets a clean plus 1.5%. When I talk to founders who run a chunk of their Meta budget through European or UK ad accounts, this is the line item they never knew they were paying. The fix is simple once you see it: keep USD spend on the IO card to collect the 1.5%, and route foreign-currency spend through a card built for multi-currency.

Mercury's headline price is honest: the base account really is free. But for an ecommerce brand, the price you pay is set by your FX volume, not your subscription tier. A brand sending six figures a month to overseas suppliers in local currency pays more in a single quarter of FX than five years of Mercury Pro. Optimize the 1% and the 3%, and the $0-versus-$29.90-versus-$299 question barely matters.

TCO by brand size: what Mercury actually costs at $1M, $2M, and $5M GMV

Put it together and the total cost of ownership tracks your operational profile far more than your revenue line. Below are four representative profiles built from Mercury's published rates. Treat them as illustrative models, not Mercury-published numbers: your own wire and card volumes will move them.

Read across those rows and the lesson is clear. The solo founder and the $2M brand are paying for international flows, not for Mercury. Even the $5M brand's $29.90 tier fee is the smallest line on its bill. By the time you reach the $10M heavy-international profile, the wire FX alone ($333/month, about $4,000/year) dwarfs the $299 Pro subscription. When I talk to founders sitting around $5M GMV, the move that saves them the most is rarely "downgrade the tier." It is renegotiating two or three suppliers to invoice in USD, which can wipe out more cost than any subscription change.

The other half of the equation is what Mercury pays you. If you carry idle cash, Mercury Treasury needs a $250,000 minimum across your accounts and currently yields up to roughly 3.16% APY for balances in the $250K–$2M range through a money market fund (the rate moves with the broader environment, so check mercury.com/treasury on the day). Standard checking earns 0%. On a $500K idle balance, Treasury throws off about $15,800/year. That single line more than offsets the FX drag for most brands in these scenarios, which is why "what does Mercury cost" is genuinely the wrong question for a well-capitalized brand. The right one is net: fees out minus yield in. There is also a Working Capital loan product (flat-fee, example 8% on $50K, no personal guarantee, $250K+ revenue required) that is occasionally relevant to total banking economics, though it is a financing decision rather than a recurring cost.

Mercury vs Brex vs Ramp: which finance stack wins on cost

The honest framing is that these are not really substitutes. Mercury is a bank account with a card attached. Brex and Ramp are spend-management platforms with banking attached. On pure base cost, Mercury wins: its banking is free, while Ramp and Brex monetize through paid tiers (roughly $12 to $15/user/month for their upgraded plans at the time of writing, which you should verify against current vendor pricing). Where Mercury loses is multi-currency spend control. Its 3% card FX is high, and it has fewer of the policy and approval guardrails that a 20-person team eventually wants.

The pattern we see is that operators do not pick one. They run Mercury as the bank for the free account, the free USD wires, and the Treasury yield, and they layer a card platform on top for foreign-currency spend and tighter controls. If you are weighing the three head-to-head, our companion piece on Mercury vs Brex vs Ramp for ecommerce banking goes deeper on the trade-offs, and if you are pricing out the rest of your stack, our breakdown of what A2X costs covers the accounting-sync side of the same decision. The cost question almost always resolves to "which jobs go to which tool," and getting that split right is exactly the kind of thing a fractional CFO earns back in a single quarter.

Sources and methodology

The pricing in this post is built from Mercury's own published material plus third-party reviews used to confirm rates that Mercury does not surface prominently. The tier fees ($0 free, $29.90/$23.95 Plus, $299/$239.90 Pro), wire structure, and feature inclusions come from mercury.com/pricing and the Mercury FAQ, accessed June 2026. The annual-billing discounts were cross-checked against an independent 2026 review.

The two FX rates are the most important numbers here, so they were verified across multiple sources. The 1% non-USD wire markup is stated on Mercury's FAQ. The 3% non-USD card conversion fee is confirmed by Mercury's support article on conversion fees (#32529650270484) and corroborated by independent reviews, and the article specifies that the fee is non-refundable even when the underlying transaction is reversed. The IO card's 1.5% cashback and no-annual-fee structure come from mercury.com/credit.

The Treasury figures come from mercury.com/treasury, accessed June 2026: a $250,000 minimum balance across Mercury accounts and a yield of up to roughly 3.16% APY (for the $250K–$2M deposit tier) through a money market fund, against 0% on standard checking and savings. Treasury yield is rate-environment dependent and should be re-checked on any publish or refresh date, since it moves with short-term rates. We also noted a minimum-balance discrepancy in secondary coverage (one source cited $500K); Mercury's own page lists $250K, which we treat as authoritative.

The TCO scenarios and the FX-at-scale table are Eightx illustrative models, not Mercury-published figures. Each scenario combines the published rates with an assumed wire and card volume for a brand of that size; we have labeled the assumptions in the captions so you can substitute your own numbers. The Brex and Ramp comparison pricing was drawn from third-party comparisons rather than vendor pages and should be verified against current vendor pricing before you make a switching decision.

One transparency note: the operator-voice patterns in this piece are drawn from our general experience advising ecommerce founders on banking and finance stacks, not from any named client. Figures used to illustrate those patterns are representative.

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