married file jointly or seperatly

We have always filed married jointly. My wife works full time but I am getting federal workers comp and a little ssa disability. SSA now taxes me and sends me a ssa-1099 for part of the workers comp I get. I was wondering if we file seperately the amount I get taxed on will be low but if we add ours together we will pay tax on the total amount that she gets paid and what ssa now taxes me on workers comp. Which would be best jointly or seperate.