I got deducted ₹35K for Income tax.I have submitted investment proof 2 days back. How long will it take to get back tax returns?

If you have declared your investment. Tax will still be deducted from your salary account. You will get it once you file your Income Tax Return for this financial year.

If you have submitted now, I think nothing will happen for FY. As you must submit tax declarations must be approved by 10th of the month then only it will reflect in salary slip at month end. But now tax declarations is frozen till mar ned.

1-2 months max

Wait for ITR. You will get the tax returns as part of ITR process itself