What is the fastest way to get an ITIN?

The fastest method is using a CAA Express service. Your application is prepared in 2 to 3 business days and submitted directly to the IRS. Combined with the 6 to 11 week IRS processing window, your total timeline is approximately 7 to 12 weeks from start to finish.

Does applying in person at a TAC speed up ITIN processing?

Visiting an IRS Taxpayer Assistance Center allows you to submit documents in person and keep your originals. However, the IRS processing time remains 6 to 11 weeks. The advantage is document security, not faster processing.

Why does ITIN processing take longer during tax season?

The IRS receives the highest volume of ITIN applications between January and April. This increased volume pushes processing times toward the 11-week end of the range. Applications submitted between May and December typically process faster, closer to 6 to 8 weeks.

Can I expedite my ITIN application with the IRS?

The IRS does not offer formal expedited processing for ITIN applications. The only way to shorten your total timeline is to submit a complete, error-free application as quickly as possible. A CAA Express service achieves this by preparing your application in 2 to 3 business days and ensuring accuracy to avoid rejection delays.

ITIN Processing Time Calculator

Your total ITIN processing time depends on two factors: how quickly your application is prepared and submitted, and how long the IRS takes to review it. The IRS processing window is 6 to 11 weeks for all methods. The difference between methods is the preparation and submission phase. Use the comparison below to estimate your total timeline and choose the fastest path. For a deeper breakdown, see our detailed processing times page.

Processing Time by Application Method

The table below breaks down the total timeline for each ITIN application method. Preparation time is the phase you control. IRS processing time is the same regardless of method.

Method	Preparation Time	IRS Processing	Total Estimate
CAA Express (itin.so)	2-3 business days	6-11 weeks	~7-12 weeks total
CAA Standard	7-10 business days	6-11 weeks	~8-13 weeks total
Mail-In (DIY)	Varies (+ mail transit)	6-11 weeks	~8-14 weeks total
IRS TAC Visit	Immediate review	6-11 weeks	~6-11 weeks total

Understanding Each Method

CAA Express (Recommended): 2-3 Days Prep + 6-11 Weeks IRS

The fastest preparation available. Our CAA team reviews your documents, prepares Form W-7, and submits your complete package within 2 to 3 business days. Because the application is professionally prepared and verified, rejections are rare. This gives you the shortest realistic timeline to receiving your ITIN. The Express service costs $297 and includes document verification, W-7 preparation, tax return preparation, and priority support.

CAA Standard: 7-10 Days Prep + 6-11 Weeks IRS

The same professional CAA service with a standard processing queue. Your application is prepared within 7 to 10 business days. This is a good option if you are not in a rush but still want professional accuracy. The Standard service costs $197 and includes the same document verification, W-7 preparation, and tax return preparation as Express.

Mail-In (DIY): Variable Prep + 6-11 Weeks IRS

You prepare Form W-7 yourself and mail it with your original documents (or certified copies) to the IRS Austin processing center. Preparation time depends on how quickly you gather documents and complete the form. Add 1 to 2 weeks for mail transit. The risk of errors is higher without professional review, and rejections add 4 to 8 weeks each.

IRS TAC Visit: Immediate Review + 6-11 Weeks IRS

You visit an IRS Taxpayer Assistance Center in person. An IRS agent reviews your documents on the spot and accepts your application. You keep your originals. The challenge: TAC appointments are limited and not available in all locations. You must still prepare Form W-7 correctly before your visit.

Factors That Affect Your ITIN Processing Time

The 6 to 11 week IRS window is a range, not a guarantee. Several factors push your timeline toward the shorter or longer end:

Season. January through April is peak tax season. Applications submitted during this period take closer to 11 weeks. May through December is off-peak, with processing closer to 6 to 8 weeks.
Application accuracy. Errors on Form W-7 or missing documents trigger a notice from the IRS. Each correction cycle adds 4 to 8 weeks. A clean application processes faster.
Document completeness. Submitting all required documents with proper translations eliminates back-and-forth with the IRS.
IRS backlog. Processing times fluctuate based on IRS staffing and volume. Check the IRS website for current estimates.

Want the fastest possible timeline?

CAA Express gives you the shortest preparation phase (2 to 3 days) and the highest accuracy rate, minimizing the risk of rejection-related delays. Combined with off-peak submission, you can realistically receive your ITIN in 7 to 9 weeks.

How Long Does an ITIN Take? Calculate Your Timeline

Frequently Asked Questions About ITIN Processing Times

The IRS takes 6 to 11 weeks to process an ITIN application after they receive it. Your total timeline depends on how quickly your application is prepared and submitted. Using a CAA Express service reduces preparation time to 2 to 3 business days, while mail-in applications may take additional transit time.

Ready to get your ITIN as fast as possible? Our Express service prepares your application in 2 to 3 business days.

Get It Faster with Express

Not in a rush? See all application options.