Hi there,
In general, extra income is not a bad thing, as at yours and your husbands income level, you don't need to worry about the earned income credit, which at some point goes down the more income you make.
However, there can be other negative consequences, such as loss of credits, loss of itemized deductions, loss of exemptions, etc.
Most of my clients that are married regret their "side jobs" or home businesses that are considered self-employment income because the tax burden, consising of state income tax, federal income tax, and self employment taxes is staggering. In some cases, more than 50% of the extra income is reduced by taxes.
I don't understand why you think that you won't be a deduction for your husband? Are you considering filing separately? It is generally much more beneficial to filing jointly, especially when children are involved. You are allowed to file jointly even if both spouses are working. Married filing separately status has a lot of negative consequences, such as, both spouses must either itemize or take the standard deduction, loss of certain credits, lower limits on cap. losses, etc.
Do you have an estimate on the net profit you will be making yearly through this business? If so, I could do an estimate of your tax liability with or without the extra income.
Best of Luck with your situation. If you feel I answered fairly, please hit "ACCEPT". If not, let me know! Feedback and bonuses welcome!
Wendy D. Rieger, Enrolled Agent