European Union finance ministers on Tuesday agreed new rules designed to help investors get refunded more quickly when they are unfairly double-taxed in EU countries. The rules will apply to EU residents who invest in a different EU country from the one they live in, and end up getting taxed in both for the interest and dividends. While current rules allow them to claim a refund, the process can be slow and bureaucratic, and differs between countries. Under the new rules agreed on Tuesday, EU countries would be required to either apply the appropriate tax rate in the first place or refund the …