The US tourist visa, the B1/B2 visa, is generally valid for 10 years. It allows multiple entries during this period, with a maximum stay of 6 months per visit.
| 
			 Types of US Visa  | 
			
			 Validity  | 
		
| 
			 Multiple Entry Tourist Visa  | 
			
			 10 years  | 
		
| 
			 Multiple Entry Business Visa  | 
			
			 10 years  |