This would be such an important feature!!! When is it going to be implemented?

Hello @Donuts! The $1 dollar minimum refers to the smallest amount you can charge on a credit card with Square Point of Sale. For example, say I sell donuts. 😉

Each donuts is $0.85 cents. If a customer wanted to purchase one donut they would have to pay cash, because we can't process a card transaction under a dollar. If they purchased two, they will be able to pay with a credit card. 

If you want to set a higher minimum purchase amount for your business that would be your own prerogative!  😀

Where would I set the minimum charge amount for all swipes and on-line store? Used for Donations to a charitable Organization. Would like to set the on-line minimum to 10.00

Hey @MrWonderful42! Welcome to the Community.

There's not an option in our Point of Sale system to set a minimum charge but the minimum charge for us is $1. 

To make your minimum $10, that'd have to be controlled in store by you or your employees. 

can this be turned off?  Our just updated and I do not want a minimum purchase as this isnot condusive to our snack stand.

the minimum $1 for a credit card cannot be turned off.  it is there because $1 charge is a guaranteed money-losing charge for Square, basically anything under $5 or so is due to the fact Square doesn't pass along the per-swipe fee that they are paying visa and MasterCard.