US LLC for digital marketing agencies: structure, billing and scaling

0% federal in the US and shifts the math to each partner's local return. Digital marketing agencies are natural candidates for the LLC structure. Here is how to optimize your agency through a US LLC.

A digital marketing agency under a pass-through LLC pays 0% federal in the US and shifts the math to each partner's local return: up to 47% in Spain, 10% in Andorra.

Digital marketing agencies are natural candidates for the LLC structure. Here's how to set up and optimize your agency through a US LLC.

Why agencies particularly benefit

Digital marketing agencies have a business model perfectly suited for a US LLC:

Clients across multiple countries
Revenue in multiple currencies
Need to hire international contractors
Desire for professional credibility with larger clients
Multiple payment streams from different services
High value of professional reputation and brand

Agency revenue through your LLC

A typical digital agency bills through your LLC for:

Management fees: Monthly retainers for ongoing services (SEO, social media, PPC)
Campaign budgets: Media spend invoiced to clients (collected, then spent on ads)
Performance bonuses: Results-based additional fees
Project fees: One-time website builds, campaigns, strategy work
Advisory fees: Strategic advisory and audits

Each revenue stream gets invoiced professionally from your LLC with EIN and Mercury bank details.

Managing the media budget flow

One unique challenge for agencies: you collect ad spend from clients and then spend it on platforms (Google Ads, Meta, TikTok, LinkedIn, etc.). With your LLC:

Client pays ad budget + management fee to Mercury
You pay Google Ads, Meta, etc, from Mercury using Wallester virtual cards (one per platform for tracking)
Invoices from ad platforms are LLC expenses

Important: Keep the "pass-through" ad spend clearly documented. The ad spend is not LLC profit. it's client money you spend on their behalf. Your profit is the management fee.

Hiring contractors through your LLC

Most agencies work with freelance contractors. With your LLC:

Pay international contractors via wire transfer from Mercury ($0 fee)
Use Deel or Remote for contractor agreements and payment management
Use Wise Business for paying contractors in their local currency at real exchange rates (0.4-1.5% fee vs. 2-4% at banks)
Issue 1099-NEC forms to US-based contractors (if applicable)
Issue W-8BEN for foreign contractors

Which payment methods work best for agency clients?

For monthly retainers: ACH transfer (if clients are US-based) or wire transfer (international). Both free on Mercury.

For one-time projects: Stripe payment link or Relay payment link (powered by Adyen). Professional, easy for clients.

For international clients: Mercury wire receipt (free) or Wise for multi-currency reception.

For recurring automated billing: Stripe Billing with automatic card charging.

Agency financial stack

Scaling your agency with the LLC

As your agency grows:

The LLC is the platform for growth. no additional registration needed
Hire more contractors internationally via Deel/Remote with payments from Mercury
Add partners: Convert to multi-member LLC if bringing in co-founders
Raise funding: Convert to C-Corp (especially if in Delaware) for venture investment
Access the US market: The LLC gives you a US presence for competing for US contracts
Corporate investment: Use Interactive Brokers through your LLC to invest agency reserves in 150+ global markets

Tax optimization for agencies

The LLC structure is particularly powerful for agencies because:

All ad spend is a business expense (pass-through, not profit)
Contractor costs are deductible
Software tools (analytics, reporting, project management) are deductible
The management fee (your actual profit) is what gets declared in your country of residence
With legitimate deductions, your effective taxable base is much lower than gross revenue

Common agency expenses that are fully deductible

Cash flow management for agencies

Agencies have unique cash flow patterns: you collect client retainers, but also spend on their behalf (ad spend). Managing this through proper accounts:

Retainer revenue → Mercury checking (your operating income)
Ad spend budgets → Relay sub-account (client money held in trust)
Contractor payments → Mercury wire ($0 fees, international)
Operating reserves → Slash (yield on idle cash between retainer collections)
Personal distributions → Mercury → Wise → your personal account (converted at real rates)

This separation makes accounting clean, Form 5472 simple, and client trust maintained.

A couple of adjacent reads worth having open alongside this one: US LLC for content creators: YouTube, Twitch and beyond and What is the IRS and how does it affect your US LLC?, which sharpen exactly the edges we skimmed above.

Agency growth milestones with your LLC

Book your strategic consultation and we'll design your LLC structure for your agency's specific model.

Legal and regulatory references

This article relies on rules currently in force. Main sources for verification:

United States. Treas. Reg. §301.7701-3 (entity classification / check-the-box); IRC §882 (tax on foreign income effectively connected with a US trade or business); IRC §871 (FDAP and withholding on non-residents); IRC §6038A and Treas. Reg. §1.6038A-2 (Form 5472 for 25% foreign-owned and foreign-owned disregarded entities); IRC §7701(b) (tax residency, substantial presence test); 31 U.S.C. §5336 (Corporate Transparency Act, BOI Report to FinCEN).
Spain. Law 35/2006 (LIRPF), arts. 8, 9 (residency), 87 (income attribution), 91 (CFC for individuals); Law 27/2014 (LIS), art. 100 (CFC for companies); Law 58/2003 (LGT), arts. 15 (anti-abuse) and 16 (simulation); Law 5/2022 (Form 720 penalty regime after CJEU C-788/19 of 27/01/2022); RD 1065/2007 (Forms 232 and 720); Order HFP/887/2023 (Form 721 crypto). And if a notice does land, at Exentax we keep the dossier ready so you reply in hours, not weeks.
Spain–US treaty. BOE of 22/12/1990 (original DTT); Protocol in force since 27/11/2019 (passive income, limitation on benefits).
EU / OECD. Directive (EU) 2011/16, amended by DAC6 (cross-border arrangements), DAC7 (Directive (EU) 2021/514, digital platforms) and DAC8 (crypto-assets); Directive (EU) 2016/1164 (ATAD: CFC, exit tax, hybrid mismatches); OECD Common Reporting Standard (CRS).
International framework. OECD Model Convention, art. 5 (permanent establishment) and Commentaries; BEPS Action 5 (economic substance); FATF Recommendation 24 (beneficial ownership).

Applying any of these rules to your specific case depends on your tax residency, the LLC's activity and the documentation you keep. This content is informational and does not replace personalized professional advice.

Banking and tax facts worth clarifying

Fintech and CRS information evolves; here is the current state:

Before going further, put numbers on your case: the Exentax calculator compares, in under 2 minutes, your current tax bill with what you would carry running a US LLC properly declared in your country of residence.

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Notes by provider

Mercury operates with several federally chartered partner banks and FDIC coverage via sweep network: mainly Choice Financial Group and Evolve Bank & Trust, with Column N.A. still in some legacy accounts. Mercury is not itself a bank; it is a fintech platform backed by those partner banks. If Mercury closes an account, the balance is typically returned by paper check mailed to the account holder's registered address, which can be a serious operational problem for non-residents; keep a secondary account (Relay, Wise Business, etc.) as contingency.
Wise ships two clearly different products: Wise Personal and Wise Business. For an LLC you must open Wise Business, not the personal account. Important CRS nuance: a Wise Business held by a US LLC sits outside CRS because the account holder is a US entity and the US is not a CRS participant; the USD side operates via Wise US Inc. (FATCA perimeter, not CRS). In contrast, a Wise Personal opened by an individual tax-resident in Spain or another CRS jurisdiction does trigger CRS reporting via Wise Europe SA (Belgium) on that individual. Opening Wise for your LLC does not bring you into CRS through the LLC; a separate Wise Personal in your own name as a CRS-resident individual does report.
Wallester (Estonia) is a European financial entity with an EMI/issuing-bank licence. Its European IBAN accounts are within the Common Reporting Standard (CRS) and therefore trigger automatic reporting to the tax administration of the holder's country of residence.
Payoneer operates through European entities (Payoneer Europe Ltd, Ireland) that are also in scope for CRS for clients resident in participating jurisdictions.
Revolut Business: when paired with a US LLC, it operates under Revolut Technologies Inc. with Lead Bank as its US banking partner. The account delivered is a US account (routing + account number); no European IBAN is issued to a US LLC. The European IBANs (Lithuanian, Belgian) belong to Revolut Bank UAB and are issued to European clients of the group. If you are offered a European IBAN tied to your LLC, confirm exactly which legal entity holds that account and which regime it reports under.
Zero tax: no LLC structure delivers "zero tax" if you live in a country with CFC/tax transparency or income attribution rules. What you achieve is no double taxation and correct reporting at residence, not elimination.

Legal & procedural facts

FinCEN and IRS reporting requirements moved recently; the current state is:

BOI / Corporate Transparency Act: your LLC is NOT required to file (a competitive advantage). After FinCEN's March 2025 interim final rule, the BOI Report obligation was narrowed to "foreign reporting companies" (entities formed OUTSIDE the US and registered to do business in a state). A US-formed LLC owned by a non-resident does NOT file the BOI Report: one fewer filing on your calendar, less paperwork, and a cleaner structure than ever. If your LLC was formed before March 2025 and you already filed BOI, keep the acknowledgement. The regulatory status can change again: we monitor FinCEN.gov on every filing and, if the obligation comes back, we handle it at no extra cost. Current status verifiable at fincen.gov/boi.
Form 5472 + pro-forma 1120. For a Single-Member LLC owned by a non-resident, the final regulations of Treas. Reg. §1.6038A-1 (in force since 2017) treat the LLC as a corporation for 5472 purposes. Procedure: pro-forma Form 1120 (header only: name, address, EIN, tax year) with Form 5472 attached. It is filed by certified mail or fax to the IRS Service Center in Ogden, Utah, not e-filed via standard MeF. Due date: April 15; extension via Form 7004 to October 15. Penalty: $25,000 per form per year, plus $25,000 per additional 30 days of non-filing after IRS notice.
Substantive Form 1120. Only applies if the LLC has filed a check-the-box election to C-Corp (Form 8832): it then pays 21 % federal corporate tax and files a substantive 1120. A standard disregarded LLC does not file a substantive 1120 and does not pay federal corporate tax.
EIN and notice. Without an EIN you cannot file 5472 or BOI. The IRS does not warn before imposing penalties; you find out when an EIN is flagged or a later filing is rejected. Now is the moment to ask for help. At Exentax we open the case, file what is missing and reply to the relevant authority for you.

LLC for digital marketing agencies: the setup that scales without friction

A digital marketing agency is one of the profiles where the US LLC works almost always: B2B international clients, clean invoice without crossed VAT, dollar-friendly banking and a stack that scales from solo freelance to a team of 8-15. Here is what works in real agencies running 200k-2M annually.

Why the LLC fits the agency. Your clients are businesses (B2B), pay in USD or EUR with no withholding obligation, value that you invoice from an international entity rather than a self-employed individual. Mercury + Stripe + Wise covers USD/EUR collection, conversion and card issuance for Meta, Google, Notion, etc. No crossed VAT.
Typical structure we recommend. Single-member LLC in Wyoming or New Mexico, EIN, Mercury Business as main account, Wise Business for EUR/GBP, Stripe US for cards, contractor agreements with your team (W-9 or W-8BEN per country). Maintenance cost: 1,500-2,500 USD annually all-in.
What is taxed in your country (residence). If you reside in Spain, profits attributed to the LLC are taxed in IRPF as business income. If you reside in LATAM, the LLC is generally treated as opaque and only distributions are taxed. The LLC does not exempt you from local income tax - but saves operational friction, crossed VAT and gives international scale.
Frequent mistake. Trying not to invoice anything in your country and passing everything through the LLC without reporting it. The tax authority detects the flow (CRS reports your personal account, Wise reports IBAN, Stripe may report) and the audit lands with 50-150% surcharge. The LLC is declared, not hidden. At Exentax we have closed clients in exactly this spot at zero penalty. Speaking up early pays off — and saves you five figures.

What we are asked the most

LLC or Spanish company (SL) for my agency? Depends on the mix: if >70% international clients (US, EU B2B, LATAM), LLC is usually more operational and cheaper. If >70% Spanish clients, SL makes more sense for local banking, VAT OSS and more flexible deductions.

Can I subcontract freelancers from the LLC? Yes, with contractor agreement and the right tax form: W-9 if US freelancer, W-8BEN if non-US individual, W-8BEN-E if non-US entity. Payments via ACH (US) or wire/Wise (rest). 100% deductible.

At Exentax we build the full LLC setup for a digital marketing agency (incorporation + EIN + Mercury + Stripe + Wise + contractor templates) in 4-6 weeks, ready to invoice the first client.

References: sources on structures and jurisdictions

The comparisons and quantitative data on the jurisdictions cited here rely on official sources updated to today:

United States. Delaware General Corporation Law and Limited Liability Company Act, Wyoming Limited Liability Company Act (Title 17, Chapter 29), IRS Form 5472 instructions and IRC §7701 (entity classification).
Andorra. Llei 95/2010 de l'Impost sobre Societats (10% IS), Llei 5/2014 del IRPF and the active/passive residency framework of the Govern d'Andorra.
Estonia. Estonian Income Tax Act (deferred-distribution corporate tax at 20/22%) and official documentation of the e-Residency programme.
Spain. Ley 27/2014 (IS), Ley 35/2006 (IRPF, arts. 8-9 on residency and art. 100 on CFC) and the inbound-expat regime (art. 93 LIRPF, "Beckham Law").
OECD. Pillar Two (GloBE) and OECD Model Tax Convention with Commentaries.

Choosing a jurisdiction always depends on the holder's actual tax residency and on the economic substance of the activity; review your specific case before taking any structural decision.

_More on this topic: LLC in the United States: complete guide for non-residents._

On the same topic

What if HMRC, the IRS or my local tax authority asks about my LLC?

It's the question every client raises in the first consultation, and the short answer is: your LLC isn't opaque, and a properly declared structure closes any inquiry in standard forms. Your tax authority can request the state Certificate of Formation (Wyoming, Delaware or New Mexico), the EIN issued by the IRS, the signed Operating Agreement, the Mercury or Wise statements for the year, the Form 5472 plus pro-forma 1120 you filed, and the bookkeeping that reconciles income, expenses and movements. If all of that exists and is delivered in order, the inquiry doesn't escalate.

What tax authorities do pursue, and rightly, is sham ownership (nominees, paper residency) and undeclared foreign accounts. A well-structured LLC is the opposite: you appear as beneficial owner in the BOI Report when applicable (verifiable at fincen.gov/boi), you sign the bank accounts and you declare the income where you actually live. The structure is registered with the state Secretary of State, with the IRS and, when European banks are involved, inside the CRS perimeter of the OECD standard.

The mistake that really sinks an inquiry isn't having an LLC; it's not attributing the income correctly in your domestic return, not declaring foreign accounts when the year-end balance exceeds the local threshold (€50,000 in Spain via Modelo 720; the equivalent FBAR / Form 8938 in the US for residents; T1135 in Canada), and not documenting related-party transactions between the member and the LLC. Those three fronts are worth closing before any request arrives, not after.

## What an LLC does NOT do

- It does not exempt you from tax in your country of residence. If you live in Spain, France, Germany or Portugal, you are taxed there on worldwide income. The LLC organises your US side (zero federal tax for non-resident SMLLC pass-through, absent Effectively Connected Income); it does not switch off your domestic taxation. The income tax is computed on the attributed profit, not on the dividends actually paid.

- It is not an offshore vehicle or a BEPS scheme. It is a US entity recognised by the IRS, registered in a specific state with physical address, registered agent and annual informational filings. Classic offshore jurisdictions (BVI, Belize, Seychelles) leave no public trace; an LLC leaves a trace in five different places.

- It does not protect you if you commingle funds. The pierce the corporate veil doctrine kicks in as soon as a judge sees the LLC and the member behaving as the same wallet: mixed accounts, personal expenses paid from the LLC, no signed Operating Agreement, no bookkeeping. Three suspicious transactions are enough.

- It does not save you social security contributions at home. If you are self-employed in Spain, France or Germany, your monthly social contribution remains identical. The LLC handles the trading side with international clients; your personal contribution is independent.

- It does not exempt you from declaring foreign accounts. Spain residents file Modelo 720 / 721; UK residents, the SA106; Portugal residents, the Anexo J of Modelo 3 IRS; Germany residents, the Anlage AUS. Those obligations belong to the individual, not to the LLC.

At Exentax we cover those five fronts every year alongside the US federal calendar (Form 5472, pro-forma 1120, FBAR, state Annual Report and BOI Report when applicable). The goal is that no inquiry finds a loose end and that the structure withstands a 5-to-7-year retroactive review.

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