The tax treaty
None
The United States has no income tax treaty with Ghana. Dividends, interest and royalties from US sources are withheld at the standard 30%. Money you earn for work you do in Ghana isn't US-source income, so nothing is withheld on it.
Stripe
Via Paystack
In Ghana, Stripe works through Paystack, which it owns and which handles local payments. To take card payments in dollars from customers abroad, a US LLC can apply for a US Stripe account.
Banking
Mercury available
Mercury opens accounts remotely for US companies whose founders live in Ghana. It asks for the EIN, the formation documents, your passport, a real business address and a description of the company's existing or planned US operations. Relay asks a non-US owner for a US address, an ITIN or Social Security Number and a US operating presence, so it rarely suits a founder living in Ghana.
The time difference
UTC+0
New York is 4 hours behind Ghana in summer. Everything we do is in writing, through your dashboard and email, and we reply within one business day, so the time difference rarely slows anything down.