Landlord: Charging multiple late rent charges?

I was putting together a lease, and wondering about late rent. Home is renting at $1000/m. I have a late rent charge of $25 after the 5th day. Due 1st, 5 day grace to 6th (for Friday Checks if needed), then on the 7th I add it. Let's say someone doesn't pay until the 20th, can you, or have you, added... show more I was putting together a lease, and wondering about late rent. Home is renting at $1000/m. I have a late rent charge of $25 after the 5th day. Due 1st, 5 day grace to 6th (for Friday Checks if needed), then on the 7th I add it.

Let's say someone doesn't pay until the 20th, can you, or have you, added additional late charges? Is that a normal practice? Or is it just one late charge per rental invoice?

Thanks
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