About Us

Who We Are
Nkemens US Tax Services was founded with a clear mission: to make US tax compliance straightforward and accessible for expatriates, cross-border individuals, and companies in Japan and beyond. Based in Yokohama, Japan, we specialize in providing expert US tax preparation, planning, and advisory services with a focus on how Japanese taxes intersect with US tax obligations.

Our Expertise
Our firm is led by Paul Mensah, our CEO and tax partner, who brings over 15 years of extensive US tax experience. Paul has honed his expertise while working as management staff at a Big 4 tax accounting firm in Tokyo, Japan, and Ottawa, Canada. His considerable experience in handling complex tax matters equips us to deliver high-quality, tailored services to our clients.

Our Commitment
At Nkemens US Tax Services, we pride ourselves on going the extra mile to ensure that your tax filing experience is as smooth and hassle-free as possible. Our dedicated staff is committed to providing personalized service and expert guidance, making the provision of US tax services an enjoyable experience.
Whether you need assistance with US federal or state income tax returns, reporting foreign financial assets, or navigating the complexities of cross-border taxation, we’re here to support you every step of the way.