It depends on various things. First though, in notification they say 16-18k actual amount after DA, HRA, TA allowances become 23-25k. Presently if 7th pay commission gets implemented in Tamil Nadu then salary goes up to 28-30k. Then from now 10 years may take to earn 45k which is the salary of next higher service.i e group 2. But don't worry -
by that time 8th pay commission will be there raising salary to 55k. Then if you write department exams you can get easy promotions, pay hike , MACP. If you want a stress free job with some decent salary and permanent job, then it is a solution. But if you are dreaming of money, then IT is better. Just be very sure. Our country is going through a turbulent period in IT. But everything may be OK by 2 years when our NPA in banks will reduce.