Hi,
SSI exemption is based on the preceeding year turnover if your T.O. did not excced 4 crores than in the current Financial year you are eligible for the ssi exemption.
Exemption limit is 1.50 Crores on the domestic clearances and than normal rate of duty apply above the said limit.
However unit has to give declaration to the department where the value exceeds 90 lakhs in the preceeding financial year.
For taking exemption upto 1.50 crore no cenvat on inputs should be availed else eligibility for exemption is lost.
In your case you would be eligible for the exemption of 1.50 crore in the current year.
Warm regards