You can pay income tax now only on this portal and not on NSDL

If you are paying self-assessment, advance tax or any other type of tax, then you will have to use the new income tax return (ITR) portal to pay the income tax. There are multiple online and offline payment options available on the new ITR portal. Read here to know how the payment can be made.

from Tax-Wealth-Economic Times https://ift.tt/0Z3XNcT