1. Can I make my tax payments offline?
Yes, you can make your tax payment over the counter or through RTGS / NEFT at your bank branch. Using the Make payment offline service, you will be able to download a Challan Form / Mandate Form for the challans already generated and saved under the  Generated Challans tab.

2. Is there a time limit to pay tax after challan has been created? 
You are required to make the tax payment within 15 days from generation of challan (i.e. 15 Days from the date of CRN generation). In case of Advance Tax, you need to make the payment within 15 Days from the date of CRN generation or before 31st March of the current Financial Year, whichever is earlier. 

3. How will I know if my payment has been successfully remitted through the e-Filing portal?
After successful payment, you will receive a confirmation message on your email ID and mobile number registered with the e-Filing portal. Additionally, Payment History will reflect the status of successful payment along with CIN, which will be provided by Bank on confirmed payment.

4. What do I need to do after downloading the Mandate Form?
You can remit the tax amount by using the Net Banking facility of your bank or over the counter by instructing the bank to debit your account (via Mandate Form).

5. Can I pay through cheque or demand draft? Is there any limit of cheque / DD transaction allowed?
Yes. There might be a limit through cheque / demand drafts depending upon respective banks.

6. Can I pay through cash? Is there any limit on cash transaction?
Yes. Cash transaction is allowed for an amount up to ₹10,000/- per CRN.

7. What do I need to do after downloading the Challan Form?
You can visit any branch of the selected bank and remit the tax amount over the counter via Cash / Cheque / Demand Draft (along with Challan Form). 
 
8. Can RTGS / NEFT be made for tax payment using Net Banking facility, or do  I have to visit bank along with Mandate Form?
Yes, you can use Net Banking of your bank account or download and print the Mandate Form and make the payment at your bank using the Mandate Form.