After the completion of BCA, you can earn upto 3-4 lakhs per year. The packages can very company to company, skills and your experience.

If you do BCA from top notch colleges then you expect good packages if placed in top companies.

Some of the top companies which hire are Government and private IT companies, IBM, HCL, Infosys, TCS etc.

You can expect packages approx 5-6 lakhs per year.

Good Luck.