Banks vs fintech for your LLC: build the right banking architecture

Relay, Slash, Wise Business and Mercury each solve a different problem. Choose your LLC banking by KYC, country, payments, FX and continuity, not by monthly fee.

A US LLC banking decision starts with risk: FDIC covers deposits up to 250,000 USD per depositor and insured bank, while SIPC protects broker custody, not yield.

A US LLC bank account is not a monthly-fee decision. It is an operating-risk decision: deposits, partner banks, FDIC coverage, SIPC brokerage protection, KYC, treasury yield and continuity if one provider restricts the account.

When opening a bank account for your US LLC, you have two main options: traditional banks and fintech companies. The professional question is not which one looks cheaper, but which stack keeps collections, tax reserves and documentation coherent.

Traditional banks for US LLC

Major US banks like Chase, Bank of America, Wells Fargo, and Citibank offer business accounts. But for non-resident LLC owners, they're often impractical:

The problem:

• Most require in-person account opening at a US branch
• Many require a US SSN or ITIN from the applicant
• They're not designed for international online businesses
• Monthly fees: $15-30/month minimum
• Wire transfer fees: $15-45 per wire (sending), $15-25 per wire (receiving)
• Minimum balance requirements: often $1,500-5,000

The exception: Some traditional banks with strong international departments (like some Citi branches) may accommodate non-residents, but the process is complex and not guaranteed.

Bottom line: Traditional US banks are generally not the right choice for non-resident LLC owners today unless the case has a strong US presence and a banking team that understands foreign-owned LLCs.

Fintech options: the practical choice

The fintech ecosystem provides everything you need:

Mercury: useful, but not automatic

• Banking partner: Column NA (federally chartered bank, FDIC coverage through partner-bank/sweep arrangements, subject to current limits)
• Account types: Checking and savings
• Monthly fees: $0
• Minimum balance: None
• Wire transfers: Free, both domestic and international, sending and receiving
• ACH: Free
• Debit cards: Virtual immediately, physical within 7-10 days
• Application: remote when KYC fits, approvals typically in 1-5 business days
• API: Available for integrations with accounting software

Best for: a possible operating account when the US nexus, KYC story and closure mechanics fit. It is not automatic.

Relay: the organizer

• Banking partner: Thread Bank (FDIC insured)
• Account types: Up to 20 individual checking accounts (sub-accounts), 2 savings accounts
• Monthly fees: $0 (basic) or monthly fee (Pro with additional features)
• Wire transfers: Free on Pro, $5 on free plan
• ACH: Free
• Best feature: 20 free checking accounts — perfect for organizing money by client, project, or purpose
• Payment links: Provider-enabled links: create professional payment links to collect from clients

Best for: Backup account or operating layer if you want granular money organization.

Wise Business: the multi-currency companion

• Type: EMI (Electronic Money Institution), NOT a bank, not FDIC insured
• What it offers: Multi-currency accounts in 50+ currencies
• Best feature: Real mid-market exchange rates, minimal conversion fees (0.4-1.5%)
• Limitations: Not a bank, higher compliance scrutiny, funds not FDIC insured (safeguarded but not FDIC protected)

Best for: Receiving international payments in multiple currencies, currency conversion. Never as primary business account.

Slash: corporate treasury

• Type: Treasury/investment layer, not a bank deposit
• What it offers: Yield potential on cash that is genuinely idle after tax reserve, supplier payments and operating runway
• Best feature: Separates investable surplus from money needed for payroll, tax and liquidity
• Ideal for: LLCs with consistent revenue that do not distribute everything immediately and can accept investment-product risk

Slash Treasury is not the same thing as a checking account. Current Slash disclosures frame Treasury as a separate investment account, with securities protected by SIPC custody limits and money market funds that may lose value. Funds may be invested in institutional-grade money market funds managed by firms such as BlackRock and Morgan Stanley. That can be useful, but it is not FDIC insurance, not a bank guarantee and not a place for money due tomorrow.

• What it offers: Virtual and physical corporate cards with granular spend control
• Best feature: Create a separate virtual card for each subscription or expense category
• Ideal for: Expense tracking, subscription management, team spending control

Revolut Business: US account complement

• What it offers: US business account layer through Revolut Technologies Inc. and Lead Bank when the LLC profile fits
• Best feature: Team cards, budgets, analytics
• Ideal for: A secondary US operating layer, not a shortcut to a European IBAN

Our recommended setup

This combination gives you FDIC-backed deposit rails where they actually apply, multi-currency capability, yield potential only for investable surplus, granular card control, and redundancy.

FDIC, SIPC and Treasuries are different protections

FDIC insurance covers eligible deposits at FDIC-insured banks, with the standard limit applied per depositor, per insured bank and per ownership category. It does not cover stocks, bonds, mutual funds, crypto, money market funds or Treasury bills bought as investments.

SIPC is different: it protects the custody function of a SIPC-member brokerage if cash or securities are missing during liquidation, but it does not protect you from market losses or a security falling in value. Treasury bills, notes and bonds are obligations of the US government and are backed by its full faith and credit, but they are not FDIC-insured bank deposits and can move in market price before maturity.

At Exentax, the banking decision starts by separating operating cash, tax reserve, FX buffer and investable surplus. Only the last bucket belongs in a Treasury or money market layer.

The importance of redundancy

Never depend on a single account. If Mercury has a temporary compliance review, you need Relay as backup. If Wise restricts your account during a review, you need another currency conversion path. Redundancy is not paranoia. It is professional risk management.

Traditional bank vs. fintech: the complete decision matrix

The optimal setup: hybrid approach

Most Exentax clients use a layered stack, not one "main account" by habit:

1. Relay or Slash as the operating layer when the profile, country and activity fit
2. Wise Business for FX, EUR receipts and cross-border money movement
3. Mercury as a profile-dependent USD layer, not a universal default
4. A backup account so one compliance review does not freeze the entire operation

The point is not to chase a "$0 stack". The point is to make the banking architecture resilient, explainable and consistent with how the LLC actually earns and moves money.

To keep going on this thread, <a href="/en/blog/nominee-llc-owners-risk-and-legal-alternative">Nominee owners for LLC: why it is illegal and the risks you take</a> fills in a nuance this guide only touched on.

Account opening success rates

Based on our experience with hundreds of clients:

This is why we recommend the fintech path. With properly prepared documentation (which Exentax provides), you can be fully banked within a week, without visiting the US.

Book your strategic consultation and we'll set up your complete banking infrastructure.

If you want to validate whether this strategy fits your specific situation, at Exentax we review your case personally and propose the legal and efficient structure that truly suits you. Book an initial no-commitment session from our contact page.

> <a href="/en/book">Review my structure</a>

• Mercury: can help with USD collections, but it requires documentary discipline. Exentax reviews activity, invoices, payment provider, support account and narrative before depending on it.

• Payoneer operates through European entities (Payoneer Europe Ltd, Ireland) that are also in scope for CRS for clients resident in participating jurisdictions.

Sources and banking perimeter: banks, fintechs and LLC accounts

The bank decision starts with the holder, the rails, the country of clients, the expected volume, the documents available and the fallback plan if a review closes the account. A fintech can be excellent for one LLC and fragile for another.

Choose the institution around the operating risk

Choosing a bank or fintech for an LLC is not a logo comparison. It is a risk match between entity, owner, country, transaction type, volume, support model and fallback account. We evaluate the account as part of the operating architecture, because a provider that opens quickly can still become fragile once real money moves.

When a traditional bank fits better than a fintech

The decision between a traditional bank and a fintech rarely

follows a universal rule. It tends to follow the specific operating

profile of the LLC: volume, geographic distribution, frequency

of large wire transfers and need for cash deposits. Walking

through these four points calmly almost always points to the

right answer for the case at hand.