Friday Tax Forum Roundup

The Tax Message Boards are hopping with questions from all over the world. Join the conversation by taking a peek at these interesting discussions:

• "Renting" house to cousin: is interest tax deductible?
• Sold my business: what's my cost basis?
• Sold a mutual fund I bought in the 1990s: what's my cost basis?
• Stuck in the middle: what's my resident state for tax purposes?
• Military spouse: need help determining our state residency
• Son is being improperly claimed by Dad: what can be done now?
• Mailed my corporate tax returns late, is there any penalty?
• Rant: high-interest Refund Anticipation Loans not worth it