British citizens can stay in the US no longer than 90 days without needing a Visa

Another question I have been asked this week, how long am I allowed to stay in the US? The good news is that British citizens can stay in the US no longer than 90 days without needing a Visa, because the United Kingdom is part of the US Visa Waiver Program but you will need to apply for a Electronic System for Travel Authorization (ESTA).