The conundrum of Health insurance, page-2

Pay extra into your Super & claim to deduction so that you fall under the surcharge limit?
Depends how far over the limit you are, how much you've paid in etc.
The tax deduction limit on the Super claim is $30,000 p.a. but you can pull forward from prior years.
You can make the Super payment anytime during the tax year you're claiming it against, so even Jun-26 for this tax year.

Personal circumstances obviously apply, seek professional advice.