Multiple incomes

Hello, 

my wife and I are both retired, work, and I have a second job. We take out extra from our active employments but are getting killed every year at tax times.  10k last year 7k this year.  We have decent income but less than 150k annually collectively. Kids grown, we have a house but no other significant deductions what can we do to reduce that check at tax time. Be happy to break close to even!