Which ITIN service has the fastest preparation time?

itin.so Express prepares applications in 2-3 business days. House of Bookkeepers prepares in 2-7 business days. Business Globalizer takes 12-20 weeks for preparation. After any service submits to the IRS, processing takes 7-11 weeks regardless of provider. Total timeline: itin.so 8-12 weeks, HoB 8-12 weeks, BG 19-31 weeks.

Do all ITIN services use Certifying Acceptance Agents?

All three major services (itin.so, Business Globalizer, House of Bookkeepers) use IRS-authorized Certifying Acceptance Agents. This means your original passport stays with you. Without a CAA, you must mail your original passport to the IRS, where it is held for 7-11 weeks during processing. Always verify CAA status before choosing a service.

Which ITIN service offers a money-back guarantee?

itin.so offers a full money-back guarantee on its Express plan ($297) if your application is rejected due to a preparation error. Other services offer limited guarantees that may only cover resubmission, not a refund. Read the guarantee terms carefully before choosing. No service can guarantee IRS approval since the final decision rests with the IRS.

Can I apply for an ITIN without using a service?

Yes. You can apply for an ITIN yourself (DIY) by completing Form W-7, gathering required documents, and mailing everything to the IRS. The cost is $0 but you must mail your original passport. DIY applications have higher rejection rates due to form errors. A rejection adds 4-8 weeks to your timeline. See our DIY vs service comparison for details.

How do I know if an ITIN service is legitimate?

Check 3 things: (1) CAA authorization — the service should be listed in the IRS CAA directory, (2) Transparent pricing — all fees should be listed upfront with no hidden charges, (3) Contact information — the service should provide a phone number, email, and physical address. Avoid services that only communicate through social media or offer prices far below market rates.

What does an ITIN service actually do?

An ITIN service performs 4 main tasks: (1) Reviews your documents for completeness and accuracy, (2) Prepares Form W-7 with correct entries for your situation, (3) Certifies your identity documents through their CAA authorization so you keep your passport, (4) Submits the completed package to the IRS. Some services also prepare the required tax return.

Can I use an ITIN service from outside the United States?

Yes. All major ITIN services accept applications from international clients. itin.so serves 150+ countries through a fully online process. You upload documents digitally, the CAA certifies them remotely, and the service submits to the IRS by mail. No US visit is required. Your ITIN is mailed to the address you provide on Form W-7.

Do ITIN services prepare tax returns?

Some services include basic tax return preparation. itin.so includes W-7 preparation and document review in the base price. Tax return preparation (Form 1040-NR) may be an additional charge depending on the provider. Ask upfront whether tax return preparation is included or costs extra. A complete W-7 application requires an accompanying tax return in most cases.

How long does the entire ITIN process take with a service?

Total timeline = service preparation time + IRS processing time. With itin.so Express: 2-3 days prep + 7-11 weeks IRS = 8-12 weeks total. With itin.so Standard: 7-10 days prep + 7-11 weeks IRS = 9-13 weeks total. With a slow service: 12-20 weeks prep + 7-11 weeks IRS = 19-31 weeks total. The IRS portion is the same regardless of service.

Updated April 2026

ITIN Online Services Compared 2026: Find the Best Provider

Choosing the right ITIN service saves you $100-$200 and 10-20 weeks of waiting. Three major online services offer ITIN application assistance in 2026: itin.so, Business Globalizer, and House of Bookkeepers. Prices range from $297 to $397. Preparation times range from 2 business days to 20 weeks. This detailed comparison analyzes every factor so you can choose the best provider for your situation. For a quick overview, see our ITIN service comparison summary.

How Do the Top 3 ITIN Services Compare in 2026?

Feature	itin.so	Business Globalizer	House of Bookkeepers
Standard price	$297	$199	$297
Express price	$297	$299	$397
Standard prep time	7-10 business days	12-20 weeks	5-7 business days
Express prep time	2-3 business days	4-8 weeks	2-3 business days
CAA certification	Yes	Yes	Yes
Money-back guarantee	Full (Express)	Limited	Limited
WhatsApp support	Yes (Express)	No	No
Countries served	150+	Worldwide	Worldwide
Total timeline (Express)	8-12 weeks	11-19 weeks	8-12 weeks

How Does Pricing Compare Across ITIN Services?

The IRS charges $0 to issue an ITIN. All service fees go to the provider for document preparation, review, CAA certification, and support. Here is what each provider charges and what you get:

itin.so ($297 Standard / $297 Express): Lowest price for the standard tier. Express includes WhatsApp support and a full money-back guarantee. No hidden fees for document review, shipping, or rush processing.
Business Globalizer ($199 Standard / $299 Express): Similar pricing to itin.so but significantly slower preparation (12-20 weeks standard). The longer timeline means you could wait 6+ months for your ITIN.
House of Bookkeepers ($297 Standard / $397 Express): Most expensive option. Fast preparation (2-7 days standard) but $100 more than itin.so for comparable speed. Limited guarantee.

For a complete cost breakdown including DIY options, see our ITIN cost guide.

Why Does Preparation Speed Differ So Much Between Services?

Preparation speed reflects how quickly the service reviews your documents, prepares Form W-7, and submits to the IRS. The IRS processing time (7-11 weeks) is identical regardless of service.

Scenario	Prep	IRS	Total
itin.so Express	2-3 days	7-11 weeks	8-12 weeks
itin.so Standard	7-10 days	7-11 weeks	9-13 weeks
HoB Express	2-3 days	7-11 weeks	8-12 weeks
BG Express	4-8 weeks	7-11 weeks	11-19 weeks
BG Standard	12-20 weeks	7-11 weeks	19-31 weeks

If you need your ITIN for a tax filing deadline or bank account opening, preparation speed is critical.

Why Is itin.so the Best Value for ITIN Applications?

Lowest standard price at $297 — $100 less than House of Bookkeepers
Fast preparation: 2-10 business days — months faster than Business Globalizer
IRS-authorized CAA — your passport stays with you
Full money-back guarantee on Express — strongest guarantee in the market
WhatsApp support on Express — real-time answers vs waiting for email
150+ countries served — fully online process from anywhere

Should I Use a Service or Apply for an ITIN Myself?

DIY ITIN applications cost $0 in service fees but carry higher risks. The main drawbacks are mailing your original passport (held for 7-11 weeks), higher rejection rates due to form errors, and no support if something goes wrong. A $297 service fee is worth avoiding a 14-20 week correction cycle from a rejected application.

For a detailed comparison, see DIY ITIN vs professional service and CAA vs mail application.

ITIN Services Compared: Frequently Asked Questions

itin.so offers the lowest standard price at $297, which includes W-7 preparation, document review, and CAA certification. The next cheapest is Business Globalizer at $199. House of Bookkeepers charges $297 for standard service. All prices are for the basic tier; express tiers cost $100 more at each provider. The IRS charges $0 to issue the ITIN itself.

Ready to get started? Apply with the fastest, most affordable ITIN service starting at $297.

Apply with itin.so