Question on Rental Taxes

How rental income is tax?

Example:
If yearly rental is RM 20000
Yearly loan payment is RM 15000
Loan interest RM 3000
Net cash flow from Rental only RM2000.

We pay tax for RM 17000 or only pay RM 2000?


If pay RM 17000, do this mean properties investment for rental income is not worth? We lost money to government?


Reason: if every year we keep RM 15000 in FD, we still gain 3% interest
if invest for rental income, then we pay RM15000 taxes which maybe 10% or even 25% to government?
All net cash flow income from Rental giving to Government or even not enough.

Currently confuse how rental income can benefit.

Hope any expert can help on this.

many thanks.