ExpressTaxRefund.com primarily focuses on providing tax refund services and does not restrict its offerings based on where a taxpayer filed their taxes. Therefore, if an individual has filed their taxes through another service or provider, it is still possible to explore the services offered by ExpressTaxRefund.com, especially if assistance is needed in obtaining a tax refund or if there are inquiries related to tax filings. However, users must ensure to provide accurate information regarding their previous filings, as any discrepancies may affect the processing of their refund. It is essential to review the current information available on the ExpressTaxRefund.com website for any specific guidelines, terms of service, or requirements that may apply to those who filed taxes elsewhere. This will help ensure a smooth experience and clarify any confusion regarding eligibility for their services.