Hi Venkataram,
In your scenario, which data source are you using?
I have create a sample report and calculation using the expression below for you reference.
=runningvalue(Fields!Amount.Value,sum,"Year")

Reference
http://www.msbidude.com/2014/12/creating-ytd-calculation-in-ssrs.html
If this is not what you want, please provide us some sample data and elaborate your requirement, so that we can make further analysis.
Regards,
Charlie Liao
TechNet Community Support
