The salary with a tax refund of 25,000 is about 250,000

This actually requires more accurate data on special additional deductions and special deductions, but it can also be calculated based on the excess progressive tax rate:

The annual income is 300,000, (300,000-6)0,000*20-16920=31080.

Annual income is 250,000, (25-6)0,000*20-16920=21080.

So, including special deductions and special additional deductions, it is almost 250,000. It may be higher, but generally not more than 300,000. If you have more accurate data, you can use the back calculation calculator on the Personal Tax Wizard website to calculate your annual pre-tax income.