Deductions & credits

I am a resident of California and file taxes there, but I also receive royalties from Oklahoma and file OK tax.  I use TT, so I get California tax software with my Federal tax, but I have to purchase the Oklahoma tax software to complete my filing.  My royalties are just that, no business.  But after I purchase the OK tax software to file and then pay to efile, it is nearly a wash on my small return, so if I can somehow deduct the OK tax program maybe it will save me a tiny amount...  thanks for your help