What Is the Purpose and Format of the Invitation Letter and Host Information for a Visa Application?

An invitation letter and host information reassure the US embassy or consulate that your visit is temporary, you have a place to stay, and your plans are clearly defined. They are commonly requested for B1/B2 visa applications when you have a host in the United States.

The Specifics

• The purpose of the invitation letter is to provide details about the host, the visitor, and the reason for the trip, confirming that the applicant will stay temporarily and has structured plans.
• It explains who the visitor will see, where they are staying, the trip dates, and verifies the temporary nature of the visit.
• Host information must include the host’s full name, address, phone number, email, and immigration status in the United States (such as U.S. citizen or green card holder).
• Visitor information in the letter must list the applicant’s full name as it appears on their passport, relationship to the host, purpose of the visit (tourism, business, or both), and planned arrival and departure dates.
• The letter must be signed by the host and formally addressed to the United States Consul General at the consulate where you will apply.
• It is sent to the visa applicant so they can present it with their application; optionally it can include the visitor’s passport number.
• For business visas involving a contest or specific business activity, a separate letter from the company may also be required.

Expert Tips from Thai Kru Visa Agency

If you are applying for a B1/B2 visa and have a host, prepare the invitation letter with all the details above. For other visa types we handle the invitation letter and host information during our process — we will collect your details and prepare the correct wording for you.

Make sure the letter is clear, factual, and signed. Double-check that every date and name matches your other application documents exactly. While the invitation letter helps show ties and intent, it works together with the rest of your evidence. See our guide on what documents are required for a specific visa type and review financial requirements for a specific visa type so your full application is consistent.

At Thai Kru Visa Agency we guide applicants through every requirement without guesswork. Our team reviews your situation and ensures every supporting letter meets current expectations.

Book a Thailand consultation with us. We will walk through your exact visa type, review what invitation materials (if any) you need, and prepare them correctly so you can submit with confidence.