Check or Money Order. Online. Easily and securely pay your tax online with your credit card, an electronic check (ACH debit), or other electronic options.You typically can't buy a money order with a credit card. Instead, you'll need to use cash or a debit card that takes funds directly from your bank account. What Information Is Needed for a Money Order? Learn the full story here. To fill out a money order you need to first fill out the who the payee is, the purchasers information and sign it. Most providers do not accept credit cards for money order purchases and, if they do, the credit card issuer will typically treat it as a cash advance. When it comes to paying for a money order, most merchants do not accept debit or credit cards. Most providers do not accept credit cards for money order purchases and, if they do, the credit card issuer will typically treat it as a cash advance.