Deducting interest on revolving line of credit with both business and personal expenses

[taxquestion16]

I have a credit card in my name that I primarily use for personal expenses but also have some business expenses on it. Can I deduct the interest on the business expenses? How do I figure out what portion of the balance is personal and what is business in order to find the amount of interest on the business expenses? 

[MonikaK1]

If you often charge business expenses, a separate credit card for business use only is best. To determine the amount of deductible interest paid on a mixed-use card, you would need to identify all of the business expenses paid and calculate the portion of the interest paid that was attributable to those expenses.

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