Running Total Break By Year

Hello all,

I have sql server 2008 R2 and I'm trying to come up with a running total calculation and then break by year (start over in new year) If anyone has some suggestions, I'd be very grateful!

Table (YEAR_INCOME):

ACCT_YEAR

ACCT_MONTH

ACCT_YEAR_MONTH (combines year and month)

Prior_ACCT_YEAR_MONTH (combines prior year and month)

COMP_SKEY

NET_INCOME

bruce d. orr