In response to your question, even though your DH would rather do it on is own, the use of a professional CPA should be able to help reduce your taxes and take into account both his issues and your corporation''s. Many aspects of your business will affect you personally and your husband will not be aware of these deductions or benefits. For example, the health insurance paid by you from your corporation is 100% deductable by you on your personal tax return. Other items such as the home office is probably already taken into account on the business and you may be double dipping in your deductions.
So in conclusion, it is most likely best to do it all together because in combination, one may benefit from the other and vice versa.
Another example might be capital gains issues - if he has gains and you have losses or vice versa, they may off set each other.
One more thing, Please do not forget to take the new tax credit for excised paid from your telephone bills. See link below.
http://money.aol.com/usat/tax/canvas3/_a/irs-wants-to-hook-you-upwith-a-refund/20070125155809990001
HTH,
and by the way, I am not a CPA, I just play one on TV....No just kidding, my husband is a CPA and just told me what to write in response to your question.
Mer