The following may be helpful to you as you use our new Employer Self-Service Tax system:
- Do not have multiple browser windows open while working in the system;
- Disable pop-up blockers;
- Quarterly filings cannot be submitted using an Individual Taxpayer Identification Number (9XX-XX-XXXX). The ITIN must be deleted and, where the SSN is not known, wages may be keyed under 999-99-9999.