all interest that is taxable is reportable even if you do not receive a 1099. there is no rule that says under $10 isn't taxable only that the payor doesn't have to file. Most definitely the IRS would notice the ommission but if you use the tax tables a $10 change in your income might not produce and change in your taxes
for example, a single taxpayer with a taxable income of $20000 to $20049 would pay $2209 in federal taxes at $20050 that same taxpayer would pay $2215
