YTD with and without abap code

Hi

I can calculated YTD like 2 options

1) calmonth2 and calyear as variable and restrict calmonth2 with jan to calmonth2 user entry and calyear.

2) calmonth/year i can use and write abap code i=step2 to get YTD  ( offset will work for last year YTD)

both are based on user entry requirement or which is best scenerio to use

3)do u have any scenario enter calmonth/year as user entry variable  ( ex": 08.2013)  I want to get YTD without code and want to get current or previous year without code?

please suggest