When your organization files under an extension, you're still obligated to pay any tax due for that period by the regular return due date.
Estimate the amount of tax you owe and make a payment electronically or by check. For information on how to file electronically, see e-Services.
If you make a check payment, complete PV87 Lawful Gambling Extension Payment Voucher. The voucher, payment and extension request must be received here at the Department of Revenue by the due date of the return.
If you underestimate the tax liability, you may be assessed penalty and interest on the unpaid amount. Any tax not paid on time is subject to penalties and interest.