This is something we need as well.  Don't want to use paypal.me if we dont' have to.  Would rather just stick with square.

Thanks for posting @PJMorgs17 - Checkout links are very basic in their functionality, so I'm afraid custom options are not available. 

You might be interested customizing items by adding price variations and modifier options as a workaround 

While this isn't currently possible, another person asked the same question in this thread @FenceGuys. I've moved your post here so that you can see the answer provided by @isabelle. Someone also mentioned here that a potential workaround would be to use Square Online checkout links, set up for donations - the donation option allows donors to enter an amount of their choice.

I think the best way to approach this would likely be to use Square Estimates and Invoices once your customer has confirmed the amount they would like to pay, but it sounds like you're looking for an alternate way!

I also am interested in something like this.  In my particular case, I have clients who place a "big ticket" order & ask to make payments of varied amounts.  I suppose it's a similar concept to "layaway".  The "scheduled payments" could potentially work perfectly for this, with the exception that the % and $$ amount would be left open so they can apply whatever amount they're able to apply at the time.  

It still calls it a "donation" when my customers click the link, so this doesn't work. 

When creating your link, are you choosing Collect a Payment or Sell an Item for the link type? 

I just created a link choosing Collect a Payment, but I don't see donation anywhere in my link. 

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