Apple account requires funds to make purchases, for this, you need to add different payment methods to the App Store which allows the users to pay for different apps. Apple supports different payment methods such as PayPal, credit cards and gift cards. The Gift Cards also adds up credit to the account which helps in buying different apps and in-app purchases.
If you don’t want to use gift cards and add funds to the Apple ID then the best way is to use your credit card or PayPal. There are different ways you can use load funds to Apple ID that includes from the device or from the iTunes.
Adding Funds to Apple ID from Device
If you want to add funds to the Apple account using the device, you need to go to the settings. For example, in the case of iPhone, you need to open the settings and open the account from your name options at the top of the menu. A new screen will appear, tap on iTunes and App Store.
Tap on the Apple ID and it will ask to sign in which you can do from the Touch ID, Face ID or password. After signing in, top on Add funds to Apple ID option choose the payment method i.e. PayPal or Credit Card.
Adding Funds to Apple ID from iTunes
You can also add funds to the Apple ID from the iTunes app. All you need to have iTunes installed on your system. It does not matter that your iDevice is synchronized to the computer or not. All the settings will take effect as soon as your device connects to the internet.
Open the iTunes and go to the Account, sign in with the Apple ID to which you want to add funds. Go to View my account option and Find Apple ID Account section in the account summary. Click on the Add funds to Apple ID.
Now choose the payment method and choose the amount you want to transfer to the Apple ID. In case the payment fails, you need to remove the payment method and again add the payment method.
The users from US can always get something extra. So, keep using your Apple ID to get some extra credit or gifts.