US Visa Types: Immigrant and Nonimmigrant Categories

US visa types fall into two broad families: nonimmigrant visas for people coming temporarily — to visit, study, work, or take part in an exchange program — and immigrant visas for people seeking to live in the country permanently and receive a Green Card. Within each family, federal law creates dozens of specific categories, each with its own eligibility rules, length of stay, and restrictions on what you can do once admitted. Citizens of 42 designated countries can skip the visa process entirely for short tourism or business trips. The right category depends on why you’re coming, how long you plan to stay, and whether you intend to return home.

One point applies to every category before you go further: a visa itself does not guarantee entry. Customs and Border Protection officers at the port of entry make the final call on whether you’re admitted, how long you can stay, and under what conditions.

When You Don’t Need a Visa

Citizens of 42 countries can travel to the United States for tourism or business for up to 90 days without a visa through the Visa Waiver Program.¹ You still need an approved Electronic System for Travel Authorization (ESTA) before boarding your flight or vessel. Participating countries include most of Western Europe, Japan, South Korea, Australia, and New Zealand; the full list is published by the Department of State.

An ESTA costs $40.27 and is valid for two years or until your passport expires, whichever comes first.²³ The convenience comes with hard limits. You cannot extend the 90-day stay, and you cannot change immigration status while you’re in the country.⁴ If you might need more than 90 days, want the option to extend, or plan to study or work, you need an actual visa even if your country participates in the program.

Nonimmigrant Visas: Temporary Stays

Nonimmigrant visas cover temporary stays for specific purposes. Section 101(a)(15) of the Immigration and Nationality Act sets these classifications, and each letter designation carries its own rules about what you can and cannot do in the country.⁵ The categories most travelers use are these:

B-1/B-2 (Visitor): The B-1 covers short-term business activities like attending conferences or negotiating contracts. The B-2 covers tourism, family visits, and medical treatment. A B visa holder can typically stay up to six months and may request an extension.
F-1 (Academic Student): For enrollment in a degree program, language training, or other academic coursework at an approved institution. F-1 holders must carry a full course load and are limited in off-campus employment.
M-1 (Vocational Student): Similar to F-1 but for technical or vocational programs rather than academic degrees.
J-1 (Exchange Visitor): For participants in approved cultural or educational exchange programs, including research scholars, au pairs, and interns. Many J-1 holders face a two-year home-country residence requirement before they can apply for certain other visa types.
H-1B (Specialty Occupation): For professionals in jobs that require at least a bachelor’s degree in a specific field. The maximum authorized stay is six years.⁶
L-1 (Intracompany Transferee): For companies transferring managers, executives, or employees with specialized knowledge from a foreign office to a U.S. branch. Managers and executives can stay up to seven years; specialized-knowledge workers, up to five.⁶
O-1 (Extraordinary Ability): For individuals at the top of their field in sciences, arts, education, business, or athletics. The authorized period matches the duration of the event or activity.

Students on F-1 or M-1 visas and exchange visitors on J-1 visas also pay a SEVIS fee before the visa interview. It’s $350 for F and M applicants and $220 for most J applicants.⁷ The SEVIS fee is separate from the visa application fee and funds the system that tracks international students and exchange visitors while they’re in the country.

The H-1B Cap and Lottery

Congress limits the H-1B to 65,000 new visas per fiscal year, plus 20,000 reserved for workers with a master’s degree or higher from a U.S. institution.⁸ Demand consistently exceeds supply, so USCIS uses a lottery. Employers first submit an electronic registration for each prospective worker, and USCIS randomly selects registrations to determine who can file a full petition.

Starting with fiscal year 2027, the selection is weighted toward higher-paid workers. Registrations tied to workers at the highest wage levels for their occupation are entered into the pool more times than those at lower levels, giving better-compensated candidates a greater chance of selection.⁸ Universities, nonprofit research organizations, and government research organizations are exempt from the cap, so workers petitioned by those employers skip the lottery entirely.

Immigrant Visas: Permanent Residence

Immigrant visas lead to lawful permanent resident status and a Green Card. The Immigration and Nationality Act caps the total number issued each year and divides them among family-sponsored, employment-based, and diversity categories.⁹ Wait times vary dramatically depending on your category and country of birth.

Family-Sponsored

Immediate relatives of U.S. citizens — spouses, unmarried children under 21, and parents — receive priority and are not subject to annual numerical caps. These include the IR-1 and CR-1 spousal categories. Everyone else falls into preference categories with yearly limits:¹⁰

F1: Unmarried adult sons and daughters of U.S. citizens
F2A: Spouses and minor children of lawful permanent residents
F2B: Unmarried adult sons and daughters of lawful permanent residents
F3: Married sons and daughters of U.S. citizens
F4: Brothers and sisters of adult U.S. citizens

Wait times in these preference categories can stretch from a few years to over two decades. Applicants from countries with high demand, such as Mexico, the Philippines, India, and China, face the longest backlogs. The K-1 fiancé visa works differently: it lets a U.S. citizen’s fiancé enter temporarily, marry within 90 days, and then apply to adjust to permanent resident status.

Employment-Based

Employment-based immigrant visas follow a five-tier preference system:¹⁰

EB-1: Priority workers with extraordinary ability, outstanding professors or researchers, and multinational managers or executives
EB-2: Professionals with advanced degrees or exceptional ability
EB-3: Skilled workers, professionals with bachelor’s degrees, and other workers
EB-4: Special immigrants, including religious workers and certain government employees
EB-5: Immigrant investors who commit capital to a U.S. commercial enterprise that creates jobs. The standard investment is $1,050,000, reduced to $800,000 for investments in targeted employment areas with high unemployment or rural locations.¹¹

Most EB-2 and EB-3 cases require the employer to first obtain a labor certification from the Department of Labor, proving no qualified U.S. worker is available for the position. That step alone can take months.

The Diversity Visa Lottery

The Diversity Visa Lottery makes 55,000 immigrant visas available each year to people from countries with historically low rates of immigration to the United States.⁹ Registration opens for a short window each autumn through a government-run online system, and entry is free. Third-party sites that charge to submit your entry add nothing the government system doesn’t already provide.

To qualify, you need at least a high school diploma (or equivalent) or two years of work experience within the past five years in a job that itself requires at least two years of training.¹⁰ Being selected does not guarantee a visa. Selectees must still pass the same background, security, and health screenings as all other immigrant applicants, and they must act quickly, because unused visa numbers don’t carry over to the next fiscal year.

How the Queue Works

Because immigrant visa numbers are limited, most applicants wait in a queue. Your place in line is set by your priority date, the date your petition or labor certification application was filed with the government.¹² Each month, the Department of State publishes the Visa Bulletin, which lists cutoff dates for each preference category and country. Your visa becomes available when your priority date is earlier than the published cutoff.

If the Visa Bulletin shows “C” for your category, visas are currently available to all qualified applicants. If it shows “U,” no visas are available at all. Cutoff dates sometimes move backward, a situation called retrogression, when more people apply than there are visas for a given month. That can happen even after your date was previously current, so checking the bulletin monthly is worth the effort.¹²

Who Can Be Denied Regardless of Category

Even if you qualify for a visa category, certain factors in your background can make you ineligible. Federal law lists extensive grounds for denying a visa, grouped into broad categories:¹³

Health-related: Communicable diseases of public health significance, failure to show required vaccinations, or a physical or mental condition that poses a safety risk
Criminal: Convictions or admissions involving crimes of moral turpitude, controlled substance violations, or multiple offenses with combined sentences of five years or more
Security: Involvement in espionage, terrorism, or activities threatening foreign policy interests
Public charge: A determination that the applicant is likely to become primarily dependent on government assistance
Prior immigration violations: Previous deportation, unlawful presence, visa fraud, or overstaying a prior admission
Missing documentation: Failure to present a valid passport, visa, or other required entry document

Some grounds can be overcome through a waiver, typically filed on Form I-601. Waiver eligibility varies by the specific ground and often requires showing that denial would cause extreme hardship to a qualifying U.S. citizen or permanent resident relative. For criminal grounds involving violent or dangerous offenses, waivers are granted only in extraordinary circumstances.¹³

What Every Applicant Does

Regardless of visa type, you gather a core set of documents. Your passport must be valid for at least six months beyond your intended period of stay, though citizens of certain countries are exempt from this rule and need only a passport valid through their stay.¹⁴ Digital photos must meet strict government specifications: full face, plain white background, no head coverings except for religious reasons. You’ll also need a detailed travel itinerary and a 10-year history of employment and education.

Financial documentation — bank statements, tax returns, pay stubs, or a sponsor’s Affidavit of Support — may be required to show you can cover your expenses or won’t become a public charge. Supporting documents in a language other than English need certified translations. Documents that aren’t originals should be certified copies.

Forms and Fees

The DS-160 is the online application for all nonimmigrant (temporary) visas. It covers biographical data, family details, travel plans, and security-related questions. Immigrant visa applicants use the DS-260 instead, which collects similar information in greater depth.¹⁵ Both are submitted through the Department of State’s Consular Electronic Application Center. Take these forms seriously. False information can result in permanent visa ineligibility and federal prosecution carrying up to 10 years in prison for a first or second offense, and substantially more if the fraud is connected to drug trafficking or terrorism.¹⁶

After submitting the form, you pay a nonrefundable Machine Readable Visa (MRV) fee. The amount depends on visa type: $185 for most nonimmigrant categories (including B, F, and J visas), and $315 for treaty trader and investor categories (E visas).¹⁷ Employer-sponsored petitions (H-1B, L-1, O-1) involve additional USCIS filing fees on top of the MRV fee. Immigrant visa fees follow a separate schedule. None of these fees are refunded if your visa is denied.

The Medical Exam

Every immigrant visa applicant, and every family member applying alongside you, must complete a medical exam before the visa interview. The exam must be performed by a physician specifically authorized by the U.S. embassy or consulate in your country, known as a panel physician. Results from any other doctor will not be accepted.¹⁸

The exam reviews your medical history and required vaccinations. The CDC’s vaccination list for immigrant applicants covers measles, mumps, rubella, polio, hepatitis A and B, varicella, tetanus, and several others.¹⁹ You don’t necessarily need every vaccine on the list. Requirements are age-appropriate, and if you already have documented immunity through blood tests or prior vaccination records, additional doses may not be needed. Schedule the exam early. Results can take up to 96 days and must be ready before your interview.¹⁸

The Interview

Once your MRV fee is paid and forms submitted, you schedule a mandatory in-person interview at a U.S. embassy or consulate. Biometric data, typically fingerprints, is collected during this process. The consular officer reviews your documents, asks questions about your travel purpose or immigration intent, and makes a decision.

Three outcomes are possible: approval, denial, or a referral to administrative processing. Administrative processing means the officer needs additional security or background checks before making a final decision, which can add weeks or months and leaves you with little you can do to speed things along. If approved, the visa is printed on a foil placed inside your passport. Most embassies return the passport through a courier service or designated pickup point. Don’t book flights or make non-refundable travel arrangements until your passport is back in your hands with the visa inside.

After You Arrive

Getting through the border is not the end of the process. Every nonimmigrant admitted to the United States receives a Form I-94 arrival/departure record, either electronically or on paper. This document, not your visa, controls how long you’re authorized to stay. You can retrieve your electronic I-94 at any time through the CBP website by entering your name, date of birth, and passport information.²⁰ Check it as soon as you arrive. Catching a wrong date or classification early is far easier than discovering it months later.

Overstaying triggers serious consequences. Staying more than 180 days past your I-94 date and then departing makes you inadmissible for three years. Overstay by a year or more and the bar extends to ten years.¹³ These bars apply automatically once you leave the country, and overcoming them typically requires a waiver that can take a year or more to process.

Changing or Extending Status

If your plans change while you’re in the country, you may be able to switch visa categories or extend your stay without leaving. You file the request with USCIS before your current authorized stay expires, and you cannot begin the new activity (like attending school on a student visa) until USCIS approves the change.²¹ To be eligible, you must have been lawfully admitted, your current status must still be valid, and you must not have violated the terms of your admission.

Several categories cannot change status at all. Visa Waiver Program travelers, crew members, people in transit, and K-1 fiancé visa holders are all barred from applying.²¹ Vocational students on M-1 visas face their own restriction: they cannot switch to F-1 academic student status or to an H work visa if the vocational training provided the qualifications for the position. If you entered under the Visa Waiver Program and realize you need more time or a different status, your only option is to leave and apply from outside the country.

1
U.S. Department of State. Visa Waiver Program
2
U.S. Customs and Border Protection. ESTA – Electronic System for Travel Authorization
3
U.S. Customs and Border Protection. How Long Is My ESTA Valid For?
4
U.S. Citizenship and Immigration Services. Extend Your Stay
5
Office of the Law Revision Counsel. 8 USC 1101 – Definitions
6
Office of the Law Revision Counsel. 8 USC 1184 – Admission of Nonimmigrants
7
U.S. Immigration and Customs Enforcement. I-901 SEVIS Fee
8
U.S. Citizenship and Immigration Services. H-1B Cap Season
9
Office of the Law Revision Counsel. 8 USC 1151 – Worldwide Level of Immigration
10
Office of the Law Revision Counsel. 8 USC 1153 – Allocation of Immigrant Visas
11
U.S. Citizenship and Immigration Services. About the EB-5 Visa Classification
12
U.S. Citizenship and Immigration Services. Visa Availability and Priority Dates
13
Office of the Law Revision Counsel. 8 USC 1182 – Inadmissible Aliens
14
U.S. Customs and Border Protection. Six-Month Passport Validity Update
15
U.S. Department of State – Bureau of Consular Affairs. DS-160 – Online Nonimmigrant Visa Application
16
Office of the Law Revision Counsel. 18 USC 1546 – Fraud and Misuse of Visas, Permits, and Other Documents
17
U.S. Department of State. Fees for Visa Services
18
U.S. Department of State — Bureau of Consular Affairs. Step 10 – Prepare for the Interview
19
Centers for Disease Control and Prevention. Vaccination – Technical Instructions for Civil Surgeons
20
U.S. Customs and Border Protection. I-94/I-95 Website
21
U.S. Citizenship and Immigration Services. Change My Nonimmigrant Status