| Business | Phone |
| All Seasons Tax Svc Inc 22 Lawrence Ave, Smithtown 11787 | (631) 265-8844 |
| M Belvedere Inc 5 Cornell Ct S, Smithtown 11787 | (631) 499-5495 |
| Busiello Associates 499 Veterans Hwy, Smithtown 11787 | (631) 360-3890 |
| H & R Block Tax Svc 79 E Main St, Smithtown 11787 | (631) 979-0819 |
| Hassett Tax & Financial 738 Smithtown Byp, Smithtown 11787 | (631) 361-7616 |
| Smithtown Tax Svc Inc 22 Lawrence Ave, Smithtown 11787 | (631) 360-0862 |
| Tax Accounting Solutions 10 Lawrence Ave, Smithtown 11787 | (631) 361-8111 |