Is it safe to trust turbotax when it suggests that we could save $4000 by contributing to a trad ira?

[untuit]

I'm 71 and my spouse is 64. She will be paying in to her SEP IRA to the max this year. She also has a small trad IRA, I do not. Turbotax is suggesting that if we contribute about $16000 between us (8k each) to trad iras we will save about $4000 in taxes this year. I've never paid attention to traditional iras. Is it safe to follow the lead of ttax and add 8000 to her tira and 8000 to a new tira for myself?