1. Yes, that’s a good argument, but there needs to be a limit to how much money is awarded.
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Is 'there needs to be a limit' grammatical? What toehr expressions can we use instead of it?
2. There is a limit to how much money is awarded.
3. There has to be a limit to how much money is awarded.
4. There can be a limit to how much money is awarded.
5. There have to be some limits to how much money is awarded.
6. There used to be a limit to how much money is awarded.
(Are they all grammatical?)
To keep the same meaning as the original (which is fine, by the way), I'd use choices 2, 3, and 5.
4 implies "maybe" not "must be".
6 states what happened in the past, but not what must occur in the present.