WHY THE IRS REJECTS INSTALLMENT AGREEMENT REQUESTS. The IRS typically rejects an installment agreement request for one of three reasons. If the IRS determines that your living expenses do not fall under the category of “necessary,” your agreement will more than likely be rejected.
You can send Form 9465 with the e-return, but the IRS must still approve the installment agreement form.
If you don't qualify for an IA through OPA, you may also request an IA by submitting Form 9465, Installment Agreement Request, with the IRS.