Citrine International is a boutique international tax compliance firm.

Headquartered in Oxford, UK with a strong global network, Citrine International is able to support UK and US citizens globally with advisory and compliance services.

Our team of experienced and dedicated staff are here to ensure that you receive the very best expert advice, excellent customer service, and fierce advocacy for fair treatment by tax authorities.

Our bespoke service approach means that we tailor every engagement to suit our client's unique needs, and desired collaboration approach.

For some clients we engage many times throughout the year providing a comprehensive solution that includes providing ongoing consulting advice, coordinating other advisors to collect the information needed, and providing compliance services in multiple jurisdictions. For other clients we simply prepare taxes during annual filing periods.

Our bespoke service approach means you can engage with us in a way that works for you.

Both the UK and US have demonstrated a shared desire to combat tax evasion in recent years. This has led to increasingly complex rules. Combined with additional scrutiny from the tax authorities, the tax compliance burden for cross-border individuals has never been heavier.

Our team has decades of experience leading firms, so we can confidently handle even the most complex issues for our clients. We’re here for you.