How should I handle non-latin characters and accent marks?(such as Ä, Ö, or ß)

Non-latin characters and accent marks should not appear on your U.S. tax return. The IRS will automatically convert all non-latin characters and letters with accent marks to the closest Latin character.

Because of this, we also convert non-latin characters and letters with accent marks on returns and tax documents to the closest Latin characters before filing to prevent the IRS from incorrectly converting these characters when they receive the return.