| Business | Phone |
| Accounting Division 540 S Dupont Hwy # 2, Dover 19901 | (302) 744-1035 |
| Auditor Of Accounts 401 Federal St, Dover 19901 | (302) 739-4241 |
| Budget Office 540 S Dupont Hwy, Dover 19901 | (302) 739-4204 |
| Controller General Office 411 Legislative Ave, Dover 19901 | (302) 744-4200 |
| Finance Dept 540 S Dupont Hwy # 3, Dover 19901 | (302) 739-4201 |
| Franchise Tax Section Dover 19901 | (302) 739-4225 |
| Motor Fuel Tax Adm Po Box E, Dover 19903 | (302) 744-2715 |
| Motor Fuel Tax Div 303 Transportation Cir # 212, Dover 19901 | (302) 744-2702 |
| Pension Office 540 S Dupont Hwy, Dover 19901 | (302) 739-4208 |
| Revenue Dept 540 S Dupont Hwy # 2, Dover 19901 | (302) 739-5251 |
| Revenue Division 540 S Dupont Hwy # 2, Dover 19901 | (302) 744-1085 |
| State Lottery Office 1575 Mckee Rd # 102, Dover 19904 | (302) 739-5291 |
| State Treasurer 540 S Dupont Hwy # 4, Dover 19901 | (302) 744-1000 |
| Voluntary Assessment Ctr 480 Bank Ln, Dover 19904 | (302) 739-6911 |