Yes, unpaid taxes can affect a naturalization application because applicants must demonstrate good moral character. USCIS may review your tax compliance history. However, having a payment plan with the IRS and showing consistent compliance can help mitigate concerns. Providing documentation of payment arrangements is important at the interview.

Failure to file or pay taxes can raise red flags during review. USCIS looks for evidence of responsible financial conduct. If you owe taxes, resolving the issue or establishing a formal payment agreement before the interview can strengthen your case. Transparency and documentation are critical.