my income tax is coming is “0”
I don’t know
Should I uncheck that?
It’s hard to say. Do you have all of the income components listed as “taxable”?
If only the Basic component has “is tax applicable” then you won’t see any tax because it’s lower than your threshold “Standard Tax Exemption Amount” of 75,000.
Unless you want to add tax to the tax component, that should not be selected.
If you want taxes to be assessed against an income component, you need to check the box “is tax applicable”, then your tax slab will be queried. You still need to consider that the exempt amount of 75000 will need to be met before taxes are applied.