I'm a Green Card holder and want to apply for US citizenship, but I've made a mistake on my tax returns in the past. What should I do?

Consult with a tax professional to correct any errors.

File amended tax returns and pay any owed taxes or penalties.

Fix the mistake by amending your tax returns and paying what you owe. It’s best to clear it up before applying—talk to a tax pro or immigration lawyer for help.

Claus is correct