You must apply for a visa (B2 visa) if you want to stay in the U.S. for more than 90 days, no matter what the reason. You must apply for a visa (B1 visa) if you are traveling to the U.S. for employment or business purposes involving remuneration, even if not staying longer than 90 days.

For most visitors on a B1/B2 visitor visa, the duration of stay is determined by the Customs and Border Protection (CBP) officer at the port of entry, with a standard maximum of 180 days (6 months) per entry. While there is no "hard" rule on the total number of days you can spend in the U.S. in a single calendar year, the general "rule of thumb" used by officers is that you should spend at least as much time outside the U.S. as you do inside. If you attempt to stay for 6 months, leave for a week, and immediately return for another 6 months, you are likely to be flagged for "living" in the U.S. on a tourist visa, which can lead to your visa being revoked. For those under the Visa Waiver Program (ESTA), the limit is a strict 90 days per visit, with no option for extension. Always refer to your I-94 record for your specific "admit until" date.

The number of days you can stay in the United States in a year depends entirely on your visa status and the specific rules governing it. There is no single answer that applies to everyone.

Here’s a breakdown for common visitor scenarios:

1. For Visa Waiver Program (ESTA) Travelers

If you are a citizen of a VWP country (like the UK, Japan, Australia, etc.) and travel under the ESTA authorization: Maximum Stay Per Visit: 90 days. Important Rule: You cannot simply stay for 90 days, leave for a short time, and re-enter for another 90 days. This is considered “visa shopping” and can lead to your ESTA being revoked and entry denied. Yearly Guideline: While there’s no official annual limit, you must convince the Customs and Border Protection (CBP) officer that you are a bona fide temporary visitor. If you spend more time in the U.S. than in your home country in a 12-month period, you risk being deemed an intending immigrant and denied entry. A safe, unofficial guideline is to spend at least twice as much time outside the U.S. as inside in any rolling 12-month period.

2. For B-1/B-2 Tourist/Business Visa Holders

• Maximum Stay Per Visit: Determined by the CBP officer at the port of entry. It is written on your Form I-94 (Arrival/Departure Record). It is often granted for 6 months (180 days), but could be for less.
• You must check your I-94 online to know your exact authorized stay date.
• Yearly Guideline: The same principle as the VWP applies, but more strictly. The B visa is not for living in the U.S. Frequent, lengthy stays (e.g., 6 months every year) will raise questions about your ties to your home country. You may be admitted once, but on a subsequent visit, you could be given a shorter stay or even denied entry if the officer believes you are effectively using the visa to reside in the U.S.

3. Critical Rule for All Visitors: Presumption of Immigrant Intent

U.S. immigration law assumes every visitor intends to immigrate. It is your responsibility to prove otherwise by demonstrating strong ties to your home country (job, home, family, finances) that compel you to return after a temporary visit.

Summary Table

Status Max Stay Per Entry Key Annual Consideration ESTA (VWP) 90 days No formal limit, but frequent/long stays risk ESTA revocation. Aim to spend more time outside the U.S. B-1/B-2 Visa Up to 180 days (set by CBP) Visa can be canceled if officer believes you are using it to live in the U.S. Long, repeated stays are a red flag.

Most Important Advice:

• Never overstay! Even one day of overstay on an ESTA makes it permanently invalid. Overstaying on a visa has serious future immigration consequences.
• Always check your official I-94