16 - Can I make partial payments if I owe additional tax?
If you file electronically and pay by direct debit, you can make a partial payment. However, you must pay the final balance, using a check, money order or credit card. You cannot pay the final balance with another direct debit.
If you file electronically by April 15, you have until April 30 to make the final payment by credit card. If you want to pay by check or money order, the payment is due by April 15, even if you file electronically.