IRS Form 9465 allows taxpayers who cannot pay their full tax bills to request monthly installment plans, according to the IRS. Taxpayers generally attach the form to the front of their tax returns, according to Investopedia, but can also file the form on its own.
TaxAct recommends that taxpayers who cannot cover their entire liability pay a portion of that amount, then file Form 9465 to request an installment plan for the remaining balance. The IRS charges a fee to establish an installment plan and also charges interest on the unpaid balance, notes Investopedia. The IRS automatically approves applications for most taxpayers in good standing who owe less than $10,000.