You must be enrolled in EFTPS to pay via either system. If you recently were pre-enrolled in EFTPS and cannot find your PIN, call 888.434.7338. Payments must be scheduled by 8 p.m. ET the day before the due date to be received timely.
For general EFTPS Customer Service assistance, call 800.555.4477. If you have questions about the rule, search on "Tax Topics 757" at the IRS Web site or call the IRS at 800.830.5215.
To make a tax payment click here.