Should I put it
on the card?

You have the cash to pay. You're choosing how to pay — not whether you can afford it. Calculate the rewards, fees, and float on any purchase. Drop the link in any thread that needs an answer.

Your scenario

$
%
%

Only applies when months > 1. 0% for typical promo deals.

mo

1 = pay full balance at statement. Higher for 0% promo / installment.

Vendor card surcharge
%
$

Percent rate and flat fee. Most vendors charge neither — leave both at 0 if so.

%

Net outcome on the card

HYSA interest earned+$55.76
Net+$55.76

Yes, put it on the card

You'd net $55.76 by paying with the card.

Cumulative net position

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