How to run your LLC day to day without chaos

A solid LLC is not improvised: separate accounts, clean invoices, documented expenses, contractor payments and a monthly close that keeps the structure strong.

Running a well-kept LLC takes 2 to 5 hours of admin a month: uploading invoices, reconciling the business account, keeping clean records and filing Form 1120 + 5472 once a year.

Once your LLC is formed and your bank account is open, what does daily operation look like? Here's a practical guide to the day-to-day.

Your financial hub: the right business account

Your LLC needs a business account that matches its activity, client geography, KYC profile and payment rails. In some cases that may be Mercury; in others, Relay, Slash, Wise, Stripe or another regulated layer will be a better fit. Everything should flow through the LLC, not through personal accounts:

Receiving payments:

• Share the LLC's verified payment details with clients for ACH, wire or local rails
• Connect Stripe to the correct business account for card payments
• Link PayPal Business to the LLC account that matches your KYC profile
• Use Relay payment links (when enabled by the provider) for quick client invoicing

Making payments:

• Pay for business tools and subscriptions directly from Mercury
• Send transfers to contractors only after checking current fees, intermediary banks and FX route
• Use your Mercury debit card for business expenses

Managing treasury:

• Keep operating cash in the LLC's business account
• Keep tax and continuity reserves separate from daily cash
• Use Slash for corporate treasury — idle cash generates yield while you decide when to distribute

Monitoring your business:

• Your business account view should show real-time balance, recent transactions, and analytics
• Download statements monthly for your records
• Set up alerts for important transactions
• Use the Mercury mobile app for on-the-go monitoring

Invoicing your clients

As a US LLC, your invoices should include:

• Your LLC's legal name (e.g, "Smith Digital LLC")
• Your registered agent's address (your US address)
• Your EIN
• Invoice number and date
• Description of services
• Payment terms (Net 30, upon delivery, etc.)
• Payment instructions (Mercury routing + account for wire/ACH, or Stripe payment link)

The invoice goes out without VAT: US LLC don't charge European VAT on international business services. Your clients handle reverse charge in their own countries.

The complete financial toolkit

Mercury: one possible financial layer

Mercury can be one layer of the banking stack when the profile fits. The important part is not the brand name; it is whether the account supports your clients, payout volume, compliance file and treasury routine. Review:

• Current pricing for maintenance, ACH, domestic wires, international wires and receiving-bank fees
• Debit card (physical and virtual) for LLC expenses
• Sub-accounts to organize your money (operating, taxes, reserve)
• Clear finance view with automatic transaction categorization
• Built-in invoicing: you can send invoices directly from Mercury

Key detail: never build the routine around a universal “free wire” assumption. Use Mercury only after checking the current fee table, intermediary banks, receiving-bank charges and FX path.

Wise Business: your currency conversion tool

Wise (note: it's an EMI. Electronic Money Institution, not a bank) is perfect for converting dollars to euros, pesos, or any other currency. It gives you the real exchange rate (mid-market rate) with no hidden markup.

Typical flow: Client pays → LLC business account (USD) → Wise or another FX layer (conversion) → approved distribution or local business account (EUR/MXN/COP).

Slash: yield on idle capital

Surplus capital that accumulates after operating cash, tax reserves and continuity buffers can work for you. Slash acts as a corporate treasury manager, generating yield on your LLC's idle liquidity. This matters when your LLC bills regularly but you distribute profits monthly or quarterly, that time gap is money that can be optimized.

Revolut Business: multi-currency complement

If you operate in multiple currencies — billing in USD, paying suppliers in EUR, with expenses in GBP — Revolut Business (EMI) gives you multi-currency accounts with competitive exchange rates on weekdays and team cards. Complements Mercury and Wise.

Stripe, PayPal, and more: collecting from clients

• Stripe for card payments, subscriptions, and professional checkout (2.9% + $0.30)
• PayPal Business for clients who prefer that method
• Specialized PSPs for higher-risk or enterprise payment flows
• DoDo Payments if you sell B2C digital products — acts as Merchant of Record and handles VAT/GST for each country automatically

At Exentax we define the collection stack before you start invoicing: which rail to use, which fees to accept, which currency to keep and how to avoid mixing LLC money with personal accounts.

Expense tracking

Track every business expense throughout the year. Your LLC can pay any expense that is ordinary and necessary for the business:

• Software and tools (hosting, domains, SaaS, licenses)
• Professional services (accounting, legal, marketing, design)
• Advertising and digital marketing
• Hardware for work (computer, monitor, keyboard, ergonomic chair)
• Professional development (courses, conferences, technical books)
• Coworking or dedicated work area
• Business travel (when directly related to your activity)
• Bank and payment processor fees
• Exentax fees (yes, our fees are deductible)

Deductible expenses reduce your taxable base, and since your profits "pass through" the LLC (pass-through taxation) to your personal tax return, every legitimate expense you deduct is money you don't pay tax on. But every expense must be documented and genuinely business-related. Don't try to pass Saturday dinner with friends as a "networking dinner."

Use simple spreadsheets, Wave (free), or QuickBooks to track expenses. This makes Form 5472 preparation much easier.

Handling payments in different currencies

If clients pay in euros, pounds, or other currencies:

• Have non-USD clients pay to your Wise Business account in their currency
• Convert at the real mid-market rate (0.4-1.5% fee vs. 2-4% at traditional banks)
• Transfer USD to Mercury through a validated ACH route
• Keep records of the USD amounts for each transaction

Recommended flow: Client pays (EUR/GBP) → Wise (convert to USD) → Mercury (store) → Your personal account (Owner's Draw)

Collecting payments: your options

You have several options (and should use the most appropriate one for each client):

• ACH: for US clients. The standard domestic rail; confirm current fees, timing and exact account ownership before sending payment instructions.
• Wire transfer: for large or urgent payments. Check current fees, correspondent banks, possible receiving charges and documentation requirements before using it.
• Stripe: for card payments, subscriptions, or online payments (2.9% + $0.30 per transaction)
• PayPal Business: widely accepted alternative
• Wise Business: ideal for receiving in multiple currencies (EUR, GBP, etc.) and converting to USD
• Relay payment links: optional collection links when the provider enables them

The golden rule: all business money enters through the LLC account. If a client asks "can I pay to your personal account?" the answer is always no.

Owner's draws: paying yourself

As a Single-Member LLC, the profits are yours. You can transfer money whenever you want. This is called an Owner's Draw.

It's not a salary — you don't need to run payroll. You simply make a transfer from the LLC account to your personal account. What matters:

• Document each withdrawal with a clear note ("Owner's Draw - [date] - [amount]")
• Don't withdraw more than what's available (sounds obvious, but it happens)
• Maintain a cushion in the account for operating expenses and compliance costs
• Consolidate your withdrawals: better one documented monthly withdrawal than 47 small transfers

Pro tip: Set a monthly "payday." The first of each month, for example, make an Owner's Draw for the amount you've decided. This simplifies accounting and creates clean habits.

Record keeping: your future self will thank you

You don't need complex accounting (you're not a multinational), but you need order:

• Income and expense records: Mercury automates part of that finance view, but maintain your own tracking spreadsheet too
• Save all invoices issued and received — create a Google Drive folder organized by month
• Save expense receipts: digital or photos of physical ones. No receipt = no deduction
• Record Owner's Draws: date, amount, transfer method
• Export bank statements from Mercury quarterly — save them in your LLC folder

These records are essential for your tax filings (Form 5472 + 1120) and for demonstrating that your LLC operates as a real business.

Monthly financial routine

Dedicate 30 minutes per month to this routine:

1. Review your Mercury statement. Does everything check out?
2. Categorize expenses that weren't automatically categorized
3. Save pending invoices and receipts in your folder
4. Make your monthly Owner's Draw (if applicable)
5. Check your balance: do you have enough cushion for next month?
6. Reconcile Stripe payouts with Mercury deposits

30 minutes. Once a month. That's all you need to keep your LLC running smoothly.

Quarterly:

• Review overall financial health
• Plan upcoming distributions
• Review any currency conversion needs
• Estimate tax obligations in your country of residence

Annually:

• Provide all transaction records to Exentax for Form 5472 preparation
• File BOI Report updates if anything changed
• Renew registered agent (handled by Exentax)
• Year-end fiscal review and next-year planning

Common daily operation mistakes

• Mixing personal and business accounts: the most serious and most frequent error. Repeat: NEVER
• Not saving receipts: without documentation, you can't deduct the expense and you lose money
• Using the Mercury card for personal expenses: compromises entity separation
• Not recording Owner's Draws: creates problems for annual filing
• Forgetting annual maintenance: Annual Report, Form 5472+1120, Registered Agent renewal
• Not having a routine: laziness compounds, and by year-end you have accounting chaos
• Asking clients to pay to your personal account: every payment must go to the LLC account

What Exentax handles for you

You focus on running your business. We handle:

• Annual Form 5472 + Form 1120 filing
• Form 7004 decision and filing evidence when the annual file needs more time
• BOI Report maintenance and updates
• Registered Agent renewal
• Compliance monitoring
• Questions via WhatsApp and email throughout the year

The difference between an LLC that works and one that causes problems isn't in the paperwork. It is in the daily operation. At Exentax, we configure your complete operation from day one. We don't disappear after formation. We make sure Mercury is approved, Stripe is connected, and your collection and distribution flow works without friction.

Operating Agreement deep dive

The Operating Agreement is the single most important LLC document after the Articles of Organization. Here's what yours should contain:

Essential provisions:

• Single-member LLC designation
• Foreign (non-US) owner identification
• Disregarded Entity tax classification
• Manager-managed structure (you as managing member)
• Distribution policy (Owner's Draw method)
• Fiscal year designation (calendar year)
• Registered Agent appointment
• Authority to open bank accounts

Why this matters for banking: Mercury, Relay, Wise, and Stripe all review your Operating Agreement during onboarding. A properly drafted Operating Agreement that includes all these provisions speeds up your account approvals significantly.

Common mistakes: Using a standard document from LegalZoom or another formation service that doesn't account for non-resident ownership. These one-size-fits-all documents often lack the foreign owner provisions that Mercury requires, leading to application rejection.

The complete document checklist

At Exentax, every document is prepared, filed, and organized for you. You receive a complete LLC documentation package upon formation and annual updates as filings are completed.

If something in this structure left you wanting more detail, <a href="/en/blog/first-month-with-your-llc-activate-it-without-chaos">Your first month with a US LLC: what to expect week by week</a> dives into a neighbouring piece of the puzzle we usually keep for a separate write-up.

One operating account, one reserve and one FX layer

For daily operations, each account needs a concrete function and documentary support that is easy to explain:

• Mercury: in day-to-day operations, judge it by workflow discipline: who approves transfers, how statements are exported, how cards are controlled and how exceptions are documented.

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Daily operation is where an LLC becomes credible or fragile. If revenue, expenses, distributions, documents and bank explanations are kept clean from the first month, later filings and compliance reviews become far easier to defend.