Some places just accept credit card payments. Even with a ~3% surcharge for paying with a credit card, it can easily be worth it, depending on the particular sign up bonus.

I pay a 2.5% fee but it’s not considered a cash advance just a regular purchase.

The math works for me since it’s the fastest and most convenient way to meet spend (usually around $3k)

For a $3k rent payment (mine is less than this but as ex to meet spend), you’d pay a $75 fee, but earn the signup bonus + 3075 points. Depending on the credit card, 3075 points is likely at least worth $30.75 if not more, so your net fee is $44.25 or 1.475%, which is not bad IMO.

There's a service called plastiq that charges a flat 2.5% fee that won't look like a cash advance on your statement.

Otherwise, some landlords might let you pay via credit card.

Also, if you use something like plastiq.com, you can use them to pay your rent and other places that typically do not accept credit cards. They do have a charge for their services, but frequently runs 0% charge sales.

Disclaimer: I have been a satisfied customer for them. I do not work for them or get any kickbacks.

There are services specifically for this. They charge a fee, from 2-4% (sometimes there are promos for lower fees).

If you are spending to earn a bonus, e.g. 50,000 points for spending $3,000 you are earning 16+ points per dollar (1 point is generally around 1%, sometimes better).