Because of student loans/PSLF, my spouse and I are planning MFS in a community property state (WA). Do I add in my income, then adjust the different with me+spouse/2?

We're getting confused by the turbo tax prompt for our community asset addition or subtraction. It is correct that if I file making $60k, and he files making $50k, then for the community asset/subtraction fields, we would subtract $5k for me and add $5k to him? ($50k+$60k)/2. Thanks for any advice. This seems to make it so we are not taxed twice.