TheITIN (theitin.com) has a 4.8 out of 5 rating on OK.one, based on 70 user reviews collected here. It is listed under Legal Services & Government and its reputation is excellent. Praise is nearly unanimous, with 94% rating it 4 stars or higher; The business has not yet replied to negative reviews; 69 of them were added in the last 12 months. Last updated 2026-08-10.
Excellent service from start to finish! The team made the entire LLC registration process smooth and stress-free. They were professional, responsive, and guided me clearly at every step. This was a major milestone for me, and I truly appreciate their support. Highly recommended!
Mehmet A. Thanks for the help with my llc
Very good folllow up. Very good service. Timely reminders and very efficient. Thank you Gizem U. Your service was amazing.
Getting all time responses.
Thank you Gizem U. He was always reaching out to me to remind me about what needs to be done to be able to file my taxes before the due date. He was patient enough to explain everything I needed to know.
They care and they get things done.. I highly thank Gizem U from theitin for smoothing, facilitating any process and answering any questions I ask and for Federal Income Taxes filling in specific
Got their tax filing services, they are excellent and prompt in their services. Thank you.
Thanks Gizem U. for your services and your availability!!
Thank you Mehmet A. de Theitin for your invaluable help in setting up my company in the United States. The team was very efficient and attentive.
they help me to do the federal taxes they are so professional and fast I recommend them
Thank you to TheITIN.com team! I’m very satisfied with the services provided. From beginning to end, the team guided me through the entire process and patiently answered all of my questions—and I had a lot of them. My situation was somewhat unique, which made the process longer than usual. However, throughout the entire 3–4 month period, they remained supportive and responsive, and we were ultimately able to successfully complete everything. I would like to give special thanks to two team members who were primarily responsible for working with me. Mehmet A. assisted with filling out forms and preparing all the necessary documentation for the EIN setup. Ozgur was instrumental in helping me open and set up my bank account, as well as my Stripe account for the business. With this level of service, it’s easy to remain a loyal customer. Best regards, Bogdan vestaldesigns.com
great service, with prompt replies and indications. Clear tasks assignment 'me/them' style, ideal for delegation. A special thank you to Gizem U. for his final assistance during tax filing. well done
The ITIN team provided strong support throughout my tax filing process. Their communication was clear, their response time was good, and they guided me professionally through the required steps. They prepared the documents properly and made the process smooth and manageable. Overall, a reliable service for foreign-owned U.S. company tax filing needs.
Overall, the experience went very smoothly. The support team was very helpful and responded quickly. Highly recommended.
izem U. was very helpful and responsive throughout the process. She assisted me with submitting the 1120 and 5472 forms for my LLC and confirmed the fax submission to the IRS. The process was smooth and professional.
The ITIN is walking me through the entire process of opening my LLC and ITIN. Excellent service from Gizem U., very professional!
My experience was great. Gizem U. was very helpful throughout the entire process. We completed the whole procedure quickly, and the team was always attentive and responsive to all my questions. I really appreciated their support
Gizem U. was extremely helpful throughout my annual tax filing process. They guided me step by step, clarified every requirement, and made sure all the documents were submitted correctly. The entire process was smooth and well organized thanks to their support. Highly recommended if you need assistance with your annual tax filing.
70 reviews matching