Be sure to include all income information and any supporting documentation. After connecting to your Withholding account, simply click the "Make an EFT Payment" link to complete your filing and payment.To complete a filing using WebFile, a KanAccess account is required. Sign in or create your free account in the next step. It is telling me to file a Kansas City Mo earning tax form. I have never filed one before. I live in Kansas City, Missouri and work in the state of Kansas. When KC is selected in the City drop list, program will prepare Form RD-108. A separate form will be prepared for each income source. Submit a regular MO W-4 Form.