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Well, without knowing exactly where you fall in the 25% tax bracket, I can't be sure as when you add the $10,000. you may still stay within the 25% bracket or part of the $10,000. could be taxed at a higher rate. It sounds like you'd pay a minimum of $2,500. in Federal tax.
To be more specific with an estimate I'd need to know your filing status (Single or Married), number of exemptions, & your estimated taxable income (income after deductions and exemptions) not including the income from the insurance policies.