BUSIform
Filing Addresses for State of Delaware
Federal
Busiform Envelope
Envelope Size
State
Busiform Envelope
Returns with Refunds or No Payment Internal Revenue Service
Kansas City, MO 64999-0002
EF10-7
EF69-7
EF912-7
#10½
6 x 9
9 x 12
Delaware Division of Revenue
PO Box 8765
Wilmington, DE 19899-8765
EDE1-R
EDE6-R
EDE9-R
Returns with Balance Due Internal Revenue Service
PO Box 970011
St. Louis, MO 63197-0011
EV10-8
EV69-8
EV912-8
#10½
6 x 9
9 x 12
Delaware Division of Revenue
PO Box 508
Wilmington, DE 19899-0508
EDE1-O
EDE6-O
EDE9-O
Estimated Payments Internal Revenue Service
PO Box 970006
St. Louis, MO 63197-0006
ES09-9
#9
PO Box 8711
Wilmington, DE 19899-8711
EDE9-ES
Corporations, Partnerships, etc

Internal Revenue Service
Cincinnati, OH 45999

EF10-4
EF69-4
EF912-4
#10½
6 x 9
9 x 12

Note: Addresses above reflect latest information we have available, but are subject to change. If you have more up-to-date information, please Thank you.