| Business | Phone |
| Hardenburgh Town Assessor 51 Rider Hollow Rd, Margaretville 12455 | (845) 586-2320 |
| Middletown Assessors Office 42339 State Highway 28, Margaretville 12455 | (845) 586-4048 |
| Middletown Tax Collector 42339 State Highway 28, Margaretville 12455 | (845) 586-3895 |