A W-8BEN is a document required by the US tax revenue service (the IRS), which needs to be completed in order for you to invest in US stocks. To complete a W-8BEN, you’ll just need to confirm your name, address, nationality, and citizenship.

You’ll only need to complete a W-8BEN the first time you buy stocks with Moneybox, and then once every three years after this point. Completing a W-8BEN also means tax paid on any dividends you earn is reduced from 30% to 15%.

Please note that to pay into any Moneybox account, you’ll need to be a UK tax resident.