Industry Guide

EIN for Web Developers Guide

Tech freelancers, agencies, and software engineers need an EIN for contracts, invoicing, and payment platforms. ein.so files Form SS-4 with the IRS for non-residents. $49 Standard. $97 Express.

Get My EIN — $49 WhatsApp Us

Web developers and software engineers need a US EIN when they operate as an LLC, run an agency, or hire employees. The EIN is the 9-digit federal tax ID the IRS issues for free. Sole-proprietor developers can use an SSN, yet an EIN keeps the SSN off W-9 forms and client contracts. Non-US engineers get an EIN without an SSN by faxing Form SS-4 with a passport number on Line 7b. ein.so files Form SS-4 for $49 (4-7 business days) or $97 Express (2-3 business days).

Web development and software engineering are remote-first trades. A developer in Lagos, Lahore, or Lisbon can ship code for a US startup, invoice a US agency, and collect payment through US rails. To do that cleanly, the developer attaches a US business identity to the work. The EIN is the anchor of that identity. It opens a business bank account, satisfies the W-9 a US client sends before paying a contractor, and connects a US LLC to Stripe and PayPal. This guide explains when developers need an EIN, how freelancers and agencies differ, how non-residents file Form SS-4 without an SSN, and what tax filings follow.

Factor	Sole-Proprietor Developer	Developer LLC / Agency
EIN required?	Recommended	Yes (required)
Tax ID on W-9	SSN or EIN	EIN
Business bank account	Hard without EIN	Requires EIN
Liability protection	None	Limited liability
IRS EIN cost	$0	$0
ein.so filing fee	$49 / $97 Express	$49 / $97 Express

Do You Need

Do Web Developers and Software Engineers Need an EIN?

Web developers and software engineers need an EIN if they run an LLC, a corporation, a multi-owner agency, or hire employees. Sole-proprietor developers can use an SSN, but an EIN protects that SSN on every client W-9. Non-resident developers with a US LLC always need an EIN.

The trigger is the business structure and who pays you, not the code you write. A developer who freelances under a personal name with a single client can file taxes on an SSN. A developer who forms an LLC, takes on multiple clients, or builds an agency crosses into EIN territory.

Situation	EIN Needed?
Developer LLC (single or multi-member)	Yes (required)
Software agency / partnership	Yes (required)
Developer with employees or US payroll	Yes (required)
Freelance developer, sole proprietor	Recommended
Non-US developer with a US LLC	Yes (required)
Hobby coder, no business income	No

Why Developers Get an EIN

SSN Privacy on W-9 Forms

US clients request a W-9 before paying a contractor more than $600 per year. An EIN on the W-9 keeps your SSN off every client's records. A developer working with 10 clients hands an SSN to 10 firms without an EIN.

Business Banking

Banks require an EIN to open a business account for an LLC or agency. The account separates project revenue from personal money and simplifies bookkeeping. See EIN for a bank account.

Payment Processors and Contracts

Stripe, PayPal, and most platforms attach to a business entity through its EIN. Enterprise clients route payments to a vendor with a tax ID, not to a personal account. The EIN signals a real business.

Hiring Subcontractors

An agency that pays subcontractors or employees needs an EIN to issue 1099-NEC and W-2 forms. The EIN is the agency's identity on every payroll and contractor filing.

See who needs an EIN for the complete eligibility rules.

Use Cases

What Do Web Developers Use a US EIN For?

Web developers use a US EIN to invoice US clients in dollars, satisfy W-9 requests, open a US bank account, and run payment processors on a US LLC. The EIN converts freelance code work into a structured US business with a federal tax identity.

Software is a global export with US-centric money. The largest clients, the deepest payment rails, and the best SaaS tooling sit in the United States. Developers build a US entity to reach that ecosystem on equal footing.

Freelance Developers on Upwork and Direct Contracts

Freelance developers form a US LLC to invoice US clients in USD and present a business identity on contracts. The EIN on the W-9 keeps the developer's SSN private across every client engagement.

Development Agencies

An agency with multiple owners or contractors must have an EIN to file its partnership or LLC tax return, pay subcontractors, and bill enterprise clients that demand a vendor tax ID.

SaaS and Indie Software Founders

Indie founders shipping a SaaS product form a US LLC, attach the EIN to Stripe, and bill subscribers in dollars. A US entity also prepares the company for US investors who prefer a US structure.

Non-Resident Engineers Serving US Startups

Engineers outside the US form a US LLC to contract with American startups, collect payment through US banking, and avoid unfavorable currency conversion on every invoice. The EIN is the first step.

How to Get

How Do Web Developers Get an EIN?

Web developers get an EIN through one of three channels: the IRS online tool (instant, SSN required), the IRS fax line at 855-215-1627 (4-7 business days), or ein.so for non-residents ($49 Standard, $97 Express). The IRS charges $0; ein.so charges for preparation and filing.

US-based developers with an SSN finish the IRS online application in about 15 minutes and receive the EIN immediately. Non-resident developers cannot use the online tool, because it requires an SSN. They submit Form SS-4 by fax with a passport number on Line 7b.

Method	Speed	SSN Required?	Cost
IRS online	Instant	Yes	$0
IRS fax (DIY)	4-7 business days	No	$0
ein.so Standard	4-7 business days	No	$49
ein.so Express	2-3 business days	No	$97

Best Business Structure for Developers

Most developers pick one of two structures:

Sole proprietorship — Simplest, no formation paperwork, no liability protection. The developer uses an SSN or a personal EIN.
LLC — Liability protection, business banking, a professional identity on contracts. The EIN attaches to the LLC.

Non-resident developers form the LLC first, then file for the EIN against that entity. See how to get an EIN for the full process and EIN cost for the fee breakdown.

Step-by-Step

How Do Non-Resident Developers File Form SS-4?

Non-resident developers file Form SS-4 by fax to the IRS at 855-215-1627, using a passport number on Line 7b in place of an SSN. The IRS online tool is blocked without an SSN, so the fax method is the only path. The IRS issues most correctly filed EINs within 4-7 business days.

Form Your US LLC

Register an LLC in a state such as Wyoming, Delaware, or New Mexico through a registered agent. This gives you a US business address and a legal entity to attach the EIN to. You complete this online from any country.

Gather Your Documents

You need your passport (valid and unexpired), your LLC name, formation state, and formation date, plus your home address. No SSN, ITIN, or home-country business registration is required for the EIN.

Complete Form SS-4

Enter your US LLC name on Line 1, your address on Line 4, your full name as responsible party on Line 7a, and your passport number on Line 7b. Enter "software" or "web development" on Line 16. ein.so completes this to prevent rejection.

Submit by Fax and Receive Your EIN

The SS-4 is faxed to 855-215-1627. Standard delivery is 4-7 business days; Express is 2-3 business days. The IRS returns the EIN assignment letter (CP 575) by mail and ein.so delivers your number by email.

Developer SS-4 Field Guide

SS-4 Field	Developer Entry
Line 1 (Legal name)	Your US LLC or agency name
Line 4 (Address)	Your home or registered-agent address
Line 7a (Responsible party)	Your full name as on your passport
Line 7b (SSN/ITIN/EIN)	Your passport number (non-residents)
Line 9a (Entity type)	LLC, sole proprietor, or partnership
Line 10 (Reason)	Started new business
Line 16 (Principal activity)	"Software," "web development," or "consulting"

The most common rejection cause is a malformed international address or a mismatch between the responsible party and the LLC owner. The IRS rejects malformed addresses without a clear notice. ein.so reformats your address to an IRS-accepted style. See the full SS-4 form guide and the EIN without SSN guide.

Banking & Payments

How Do Developers Use Their EIN for Banking and Payments?

Developers use the EIN to open a US business bank account and connect US payment processors, which together give a developer LLC full access to dollar settlement. Mercury and Relay approve most non-resident LLC owners remotely within a few business days.

A US bank account plus a US payment processor lets a developer bill American clients in dollars, accept card payments, and hold USD without forced conversion. This protects margins on every invoice.

US Business Bank Account

Mercury, Relay, and Wise accept developer LLC owners with an EIN and a passport. You receive US account and routing numbers for ACH and domestic wires. See EIN for a bank account.

Stripe on a US Entity

Stripe attaches to your US LLC through the EIN. Billing US clients as a US business simplifies USD settlement and unlocks features tied to a US entity. SaaS founders route subscription revenue here.

PayPal Business and Payoneer

A US PayPal Business or Payoneer account linked to your EIN holds USD without converting to your home currency on every transaction. This improves margins on US contract work.

Invoicing US Clients

With an EIN, your invoices carry a US tax ID and your W-9 lists the EIN, not your SSN. Enterprise clients pay a vendor with a tax ID through ACH instead of routing money to a personal account.

Tax Considerations

What Should Developers Know About US Tax Filings?

A foreign-owned single-member US LLC files Form 5472 with a pro-forma Form 1120 each year, and the penalty for not filing is $25,000. The LLC itself often pays no US federal income tax on non-US-sourced income, but the information return is mandatory. ein.so files the EIN only and does not give tax advice.

The EIN is the start of US tax compliance, not the end. Developers who form a US LLC inherit a set of annual filings tied to that entity. Confirm every figure and obligation with a US CPA familiar with non-resident matters.

Form 5472 + Pro-Forma 1120

A foreign-owned single-member US LLC files Form 5472 with a pro-forma Form 1120 annually. The penalty for non-filing is $25,000. This is an information return reporting transactions between the LLC and its foreign owner.

W-9 and 1099 Reporting

US clients issue a 1099-NEC for contractor payments over $600 per year. Your W-9 lists your EIN. An agency that pays subcontractors issues its own 1099-NEC forms under the agency EIN.

Home-Country Reporting

Most countries require residents to declare foreign company interests and foreign accounts. A US LLC and EIN do not replace your home-country filings. Confirm your duties with a local tax advisor.

BOI Report to FinCEN

Most US LLCs must report beneficial ownership to FinCEN. Review the BOI filing rules to understand your obligations and deadlines and avoid penalties.

Work with a US CPA and a local accountant. See our EIN for non-residents guide and EIN processing time for timing details.

Next Steps

After Getting Your EIN as a Developer

Open a US bank account — Mercury, Relay, and Wise accept non-resident LLC owners
Connect payment processors — attach your EIN to Stripe, PayPal, or Payoneer for USD settlement
Issue W-9s with your EIN — keep your SSN off every client contract
File your BOI report — required for most LLCs, free at fincen.gov/boi
File Form 5472 — annually for foreign-owned LLCs ($25,000 penalty for non-filing)
Need a personal US tax ID too? — ein.so files ITIN applications for $197 Standard or $297 Express

Related industry guides: Graphic Designers | Writers | Podcasters | Musicians. Browse all on What you can do with an EIN.

Apply for your EIN — $49

Frequently Asked Questions

Do web developers and software engineers need an EIN?

Web developers and software engineers need an EIN if they operate as an LLC or corporation, or hire employees. A sole proprietor developer can use an SSN, but an EIN keeps the SSN off W-9 forms and client contracts. An EIN separates business and personal tax identities and is free from the IRS.

How do web developers and software engineers get an EIN?

US developers apply online at irs.gov for an instant EIN, which requires an SSN. Non-residents fax Form SS-4 to the IRS at 855-215-1627 and wait 4-7 business days. ein.so prepares and files Form SS-4 for non-resident developers for $49 (Standard, 4-7 business days) or $97 (Express, 2-3 business days).

Can non-US software engineers get a US EIN without an SSN?

Yes. Non-US software engineers get a US EIN without an SSN or ITIN. The engineer enters a passport number on Form SS-4 Line 7b instead of an SSN. The IRS online tool is blocked without an SSN, so non-residents use the fax method. ein.so files it remotely for $49.

Do freelance developers need an LLC to get an EIN?

Freelance developers do not need an LLC to get an EIN. A sole proprietor developer can apply for an EIN directly. Forming an LLC adds liability protection and enables a business bank account. Non-resident developers usually form a US LLC first, then attach the EIN to that entity.

How much does an EIN cost for a web developer?

The IRS charges $0 for an EIN regardless of industry. ein.so charges $49 for Standard filing (4-7 business days) and $97 for Express filing (2-3 business days) for non-resident developers who cannot use the IRS online tool. The fee covers Form SS-4 preparation, fax filing, and email delivery.

Why do developers put an EIN on a W-9 instead of an SSN?

Developers put an EIN on a W-9 to keep their Social Security Number off client paperwork. US clients request a W-9 before paying a contractor over $600 per year. An EIN on the W-9 reduces identity-theft exposure across multiple clients and signals a real business entity rather than a hobby.

Do non-resident developers with a US LLC file US taxes?

A foreign-owned single-member US LLC files Form 5472 with a pro-forma Form 1120 each year. The penalty for not filing Form 5472 is $25,000. This is an information return, not always a tax bill. ein.so files the EIN only and does not give tax advice. Confirm your filing duties with a CPA.

Can a development agency with multiple owners get an EIN?

A multi-owner development agency must get an EIN. Any partnership or multi-member LLC needs an EIN to file its US tax return and pay contractors. The EIN identifies the agency to the IRS, to banks, and to payment processors. ein.so files Form SS-4 for non-resident agency owners for $49.

How long does an EIN take for a software engineer applying from abroad?

A software engineer applying from abroad receives an EIN in 4-7 business days through ein.so Standard ($49) or 2-3 business days through Express ($97). The DIY fax method takes 4-7 business days when Form SS-4 is error-free. Calling the IRS means costly international calls during US business hours.

Does a web developer need an EIN for Stripe or a payment processor?

A web developer needs a US tax ID to run Stripe, PayPal, or similar processors on a US business entity. The EIN attaches the LLC to the processor and unlocks USD settlement. Non-resident developers use the EIN to bill US clients in dollars instead of accepting unfavorable conversion rates.

Need an EIN? We Handle Everything.

Non-US resident? We file Form SS-4 with the IRS and deliver your EIN by email. Just $49.

Get My EIN for $49