You have mentioned that you receive a signed salary slip from the Accounts department. So no worries, unless the new employer demands a bank statement. Also whether you are paid 50 % cash, the same would be mentioned in the appointment or salary revision letter, that should suffice.
Yes, nowadays your educational institute matters, however it can be superseded by your performance in the interview. You can also plan for an executive course from any top B Schools in India, simultaneously.
Mr. Mahesh has rightly said, to prove your salary figure u can produce the Salary slip. However, if it is must for u to produce bank detail, which will reflect half salary. In that case there is one more criteria to prove your words. If you are covered under PF-ESI, ur company must had deposited the contributions on applicable full salary. U can generate PF Passbook and show the contribution which will match with your salary slips too.
For further successful carrier you already had 9 yrs exp. so you are the best one to decide your carrier. As per my opinion you can do course in Personnel Management (which covers human resource planning, recruitment, training, compensation and benefits, payroll, statutory etc. core field of HR). It can be done thru correspondence or regular as well (as per your time availability).
Hope this will solve your query.
Thank you for the reply, but I m not eligible for ESI & PF is not in our company, because manpower is less than 20. I am getting Rs. 25000 cheque and Rs. Rs. 25000 cash every month, because employer said we can't show Rs. 50000 salary in record , he only show Rs. 30000 per month on esi register,if I will have require in future salary certificate then he will give salary certificate and slip. Is it correct to proof my income in other new company or employer ???????
Please advice ???????