Tax ID Resources and Guides

Everything you need to know about EIN and ITIN applications, all in one place

Getting Started Guides

Step-by-step guides for first-time applicants

EIN Basics: Complete Guide

Learn everything about Employer Identification Numbers

8 min read

ITIN Application Guide

Understanding Individual Taxpayer Identification Numbers

10 min read

Which Tax ID Do I Need?

Quick decision guide for choosing the right form

5 min read

Fast-Track EIN Guide

Get your EIN in 15 minutes with the Wizard

6 min read

International Applicants

Guide for non-US residents applying for tax IDs

12 min read

Required Documents

Complete checklist of documents you'll need

4 min read

EIN vs ITIN: What's the Difference?

Understanding which tax ID you need

EIN

Employer Identification Number

A 9-digit number assigned by the IRS to identify business entities

ITIN

Individual Taxpayer Identification Number

A 9-digit number for individuals who need to file U.S. taxes but don't have an SSN

Feature	EIN	ITIN
Primary Use	Business identification	Individual tax filing
Who Needs It?	• Businesses with employees • Corporations and partnerships • LLCs and sole proprietors • Non-profit organizations	• Non-residents filing taxes • Dependents of U.S. taxpayers • Spouses of U.S. citizens • International students
Common Uses	• Open business bank accounts • File business tax returns • Hire employees • Establish business credit	• File individual tax returns • Claim tax treaty benefits • Claim dependents • Open bank accounts
IRS Form	Form SS-4	Form W-7
Processing Time	Immediate (online) or 4 to 6 weeks (mail)	7 to 11 weeks
Expiration	Never expires	Expires if not used for 3 consecutive years
Application Cost	$49 one-time	$79 one-time

Ready to apply? The Wizard will guide you through the process in just 15 minutes.

Common Questions

Quick answers to frequently asked questions

How long does it take to get an EIN?

With our service, you'll have your completed EIN application form (SS-4) ready in about 15 minutes. If you apply directly to the IRS online, you can get your EIN immediately. If you mail the form, it can take 4 to 6 weeks.

Can I apply for an ITIN without a tax return?

Generally, you must attach a federal tax return to your ITIN application unless you meet an exception (such as being claimed as a dependent). We'll guide you through the requirements during the application process.

Do I need both an EIN and ITIN?

Typically, no. An EIN is for businesses, while an ITIN is for individuals. However, if you're a non-resident business owner, you might need both: an ITIN for yourself and an EIN for your business.

Is my information secure?

Absolutely. We use bank-level 256-bit SSL encryption to protect your data. We're SOC 2 and GDPR compliant, and we never share your information with third parties.

What if I make a mistake on my application?

The Wizard validates your information in real-time to prevent errors. If you choose the attorney review option (+$99), a licensed attorney will review your application for 100% accuracy before submission.

Can I apply if I'm outside the United States?

Yes! Our service is available worldwide with support for 8 languages. Many of our customers are international business owners and individuals applying from abroad.

IRS Form Instructions

Official guides and resources from the IRS

IRS Form SS-4

EIN Application Form

Official IRS instructions for completing the SS-4 form to apply for an Employer Identification Number.

IRS Form W-7

ITIN Application Form

Official IRS instructions for completing the W-7 form to apply for an Individual Taxpayer Identification Number.

Still Have Questions?

The Wizard and our support team are here to help you every step of the way