If you are using
https://www.masontitle.com/, you can put up to $7,500 on a credit card with no fee. They charge a 3% fee on any amount you put on a credit card over $7,500.
The $7,500 includes the amount you want to charge for the deposit plus the amount you want to charge which is due for closing.
I think some companies might have (or have had) a rule where you could put the deposit on a credit card, but the amount due at closing had to be by bank check or wire transfer. For
https://www.masontitle.com/ that is not the case at this time.
Maybe it goes without saying, but if you are contemplating putting more than $7,500 on a credit card, you would want to compare the 3% fee versus:
a) what your bank would charge for a wire transfer,
or
b) what your bank would charge you for a bank check plus what you would pay USPS/FedEx if you wanted to send that check via overnight service.