Comparing Mercury and Lemma for your medical practice? See how they stack up on payer EFT enrollment, paper checks, ERA reconciliation, and healthcare-specific features, and why practices are switching to Lemma.
Mercury built a beautiful bank account for startups. Lemma built one for medical practices. Here's what changes when your biggest depositor is an insurance payer, not a venture fund.
Mercury is what banking looks like when software people finally get their hands on it. Clean dashboard, fast onboarding, free wires, no monthly fees. If you're running a SaaS company, it's arguably the best account on the market.
A medical practice is not a SaaS company. Your revenue arrives as insurance remittances, paper checks stapled to EOBs, and government payer deposits that need to be matched to claims before your billing team can close the month. That's the part Mercury was never built for.
The product is genuinely good. Onboarding takes minutes. Domestic and international USD wires are free, which beats almost everyone, including us. ACH is free. There are no monthly fees or minimums, and FDIC coverage runs up to $5M through sweep networks at its partner banks. Mercury Treasury offers competitive money market yields on balances above $250K, though note that Treasury funds are invested in securities rather than FDIC-insured deposits.
If your practice's finances look like a startup's, meaning all-electronic revenue, one entity, no paper, Mercury keeps things tidy.
Three places where a startup-first account starts costing a medical practice real money and real time.
Payer enrollment and deposits. Getting paid in healthcare starts with EFT enrollment: forms, voided checks, and bank verification letters for every payer, including government ones. Mercury is a fintech whose accounts sit at partner banks, and some payer enrollment systems handle that account structure less gracefully than a direct bank account. Ask whoever runs your credentialing how forgiving payer enrollment portals are when account details don't look the way their verification process expects. Lemma accounts are built for payer enrollment from day one, with individual routing and account numbers per entity and per payer if you want them, so every deposit lands pre-attributed.
Paper. Roughly a quarter of healthcare payments still arrive as paper checks with EOBs attached. Mercury supports mobile check deposit and can't accept cash, and there is no lockbox at all. Someone at your front desk is scanning checks one at a time and keying EOB data by hand. Lemma's medical lockbox (opens in a new tab) gives each entity its own mailing address, digitizes checks and EOBs same-day at $2 per item, extracts remittance data at 96%+ OCR accuracy, and posts deposits with the EOB already matched.
Yield on operating cash. Mercury's standard checking earns nothing, and Treasury only kicks in above $250K, in funds that sit outside FDIC insurance. Lemma pays 1.75% APY on every dollar in every account, FDIC-insured up to $10M through a sweep network. On $400K of operating cash, that's about $7,000 a year Mercury checking leaves on the table (all pricing data as of August 2026).
Then there's what Mercury doesn't attempt. No ERA 835 matching. No EOB parsing. No virtual accounts organized around MSO-PC structure (opens in a new tab) with entity-level fund segregation. No support team that knows what a TRN is. You'd bolt on third-party reconciliation tools, or your billing team eats the manual matching.
If your practice receives paper checks, enrolls with government or commercial payers via EFT, runs an MSO-PC structure, or holds meaningful cash below Mercury's $250K Treasury threshold, the gaps compound quickly. Mercury's free wires are real value, but a practice sends a handful of wires a month and receives hundreds of payer deposits.
Most medical practices don't need a startup bank. They need deposits that reconcile themselves. That's where the comparison happens.