When I tried to add my PayPal account to Google Wallet, the only option I got was to set up a "Paypal Balance" account:

"When you use PayPal with Google Pay to pay in-store, we’ll use the balance on your account to pay for the transaction. If there isn’t enough money in your PayPal Cash or PayPal Cash Plus balance, we'll automatically use your bank or debit card to add money in increments of $10.00 USD to your balance to cover the purchase."

BarrenLucidity: are you saying that if you set your Citi card as the default payment method for PayPal, add your PayPal account to Google Wallet, and then use it to tap to pay at a store, PayPal will round up the total to the next $10 increment and then charge that to the Citi card? I guess that would work if so (though you're right, wow is that dumb). Be grateful if you would confirm, though - as I read it, and from what I see in threads on other sites, you can't add to your PayPal balance with a credit card. Only a bank account or debit card. But if this DOES work somehow, at least that would let me use the card more frequently without having to carry it around and dig it out of my wallet.

If it does work, do you end up with a growing balance in your PayPal account, or is it smart enough to apply what's left after a purchase toward the next purchase before charging the rest to the card?