Whether or not an ATM will accept a ripped bill depends on the severity of the damage to the bill. In general, if the bill is only slightly ripped or torn, the ATM will likely accept it. However, if the bill is severely damaged or torn in half, the ATM may reject it.

The U.S. Bureau of Engraving and Printing, which is responsible for producing U.S. currency, has guidelines for determining whether a damaged bill can still be used or needs to be replaced. According to their guidelines, a bill can still be used if it is less than 50% damaged and both the serial number and denomination are still visible. If the bill is more than 50% damaged or the serial number or denomination is not visible, it should be taken out of circulation and replaced with a new bill.
ATMs are equipped with sensors that detect the authenticity and condition of the bills being deposited. These sensors can detect a variety of issues, including torn or ripped bills. If the sensor detects that a bill is severely damaged, it will typically be rejected and returned to the user. In some cases, the ATM may even hold onto the bill and not return it at all.
If you have a ripped bill and are unsure whether or not an ATM will accept it, there are a few things you can try. First, you can try to smooth out the bill as much as possible to make it easier for the ATM to read. You can also try to deposit the bill at a bank instead of an ATM, as bank tellers may be able to manually process the bill and determine whether or not it can still be used.
It’s important to note that intentionally damaging or defacing U.S. currency is illegal. This includes tearing, burning, or writing on bills. If you receive a bill that is ripped or torn, it is best to take it to a bank to be exchanged for a new bill. Similarly, if you accidentally damage a bill, you can take it to a bank or the U.S. Bureau of Engraving and Printing to have it replaced.
In summary, whether or not an ATM will accept a ripped bill depends on the severity of the damage to the bill. If the bill is only slightly ripped or torn, the ATM will likely accept it. However, if the bill is severely damaged or torn in half, the ATM may reject it. It’s always best to exchange damaged bills for new ones to avoid any potential issues with acceptance at ATMs or other payment terminals.