You will need your corporate ID number in order to make these payments.  

Corporate ID Search

The corporate ID number is the Entity Number without the "C"  
​
Note: If you are an LLC being taxed as an C Corp, you cannot search for your corporate ID number this way

---

2017 Tax Return Payment
See email for amount owed

C Corp Due: 04/17/18

Payment Link

Entity type: Corporation
Entity ID: See email
Corporate Form Type: 100
Payment Type: Original Return Payment (Form 100)
Period Beginning Date: 01/01/17
Period Ending Date: 12/31/17

---

 2018 Estimated Tax Payment

Payment Link

Due 04/17/18 ($800 Minimum),
6/15/18, 9/17/18, 12/17/18

Entity type: Corporation
Entity ID: See email
Corporate Form Type: 100
Payment Type: Estimated Tax Payment (Form 100ES)
Period Beginning Date: 01/01/18
Period Ending Date: 12/31/18

---

*Due dates are for calendar year filers