The filing deadline is almost here. Do you owe more to the IRS than you can pay on April 17? You may be able to avoid some penalties, but not interest, by getting an extension of time to pay from the IRS. You can pay the full amount owed within 120 days, though interest and penalties accrue until you’ve paid in full. If you meet certain conditions, you can apply for an installment agreement. Fees apply but may be reduced or waived for low income taxpayers. An “offer in compromise,” if accepted by the IRS, can also let you settle your debt for a reduced amount.