IRS Form 656, Offer in Compromise, is the settlement-offer form individuals and businesses file when asking the IRS to accept less than the full tax debt owed. Form 656 by itself is not an Offer in Compromise — it is one document in a package that includes a detailed financial disclosure, a $205 application fee, a required down payment on the proposed settlement, and roughly a dozen supporting documents. Incomplete packages are returned within 30 days without consideration.
The three grounds for an OIC
Form 656 requires you to check one of three qualification grounds:
- Doubt as to Collectibility — the most common ground. Your assets and future income are insufficient to pay the full liability before the 10-year collection statute expires.
- Doubt as to Liability — you dispute that you owe the tax at all. This ground uses Form 656-L instead of Form 656.
- Effective Tax Administration — you can pay in full but doing so would cause economic hardship or would be inequitable. Rare, and heavily documented.
Selecting the wrong ground is one of the most common OIC filing errors. Doubt as to Collectibility is the correct choice for the vast majority of individual OICs.
What is in the complete OIC package
For an individual doubt-as-to-collectibility offer, the IRS requires:
- Form 656 — the offer itself, listing the proposed amount, payment terms, and tax periods covered
- Form 433-A(OIC) — Collection Information Statement for Wage Earners and Self-Employed Individuals. Detailed asset, income, and expense disclosure covering the past three months.
- $205 application fee — waived for low-income taxpayers (income at or below 250% of federal poverty level). Certify eligibility on Form 656 Section 1.
- Initial payment — for a lump-sum offer, 20% of the proposed offer amount is required with the submission. For a periodic payment offer, the first proposed monthly payment.
- Supporting documentation — three months of bank statements, three months of paystubs, three months of household bills, most recent mortgage statement, most recent auto loan statements, most recent retirement account statements, and any other documentation supporting the values reported on Form 433-A(OIC).
Businesses use Form 433-B(OIC) in place of 433-A(OIC).
Lump-sum vs. periodic payment offers
Form 656 requires you to select one payment structure:
- Lump Sum Cash Offer — 20% due with the submission; remaining 80% due in 5 or fewer payments within 5 months of acceptance. Requires the smallest total offer amount.
- Periodic Payment Offer — first proposed monthly payment due with the submission; continued payments due monthly while the offer is under review and after acceptance, over 6 to 24 months. Requires a larger total offer amount but no lump sum.
The lump-sum offer is usually the better economic choice when the taxpayer has access to the down payment. The periodic offer is the correct choice when the taxpayer’s ability to pay is derived from ongoing income rather than assets.
How the IRS calculates your minimum acceptable offer
The IRS uses a formula called Reasonable Collection Potential (RCP):
RCP = Net Realizable Equity in Assets + Future Income Value
Net realizable equity discounts asset values by 20% (Quick Sale Value) and subtracts secured debts. Future income value multiplies your net monthly disposable income by 12 (lump-sum offer) or 24 (periodic offer). Any offer below your RCP is almost automatically rejected. Most well-prepared OIC packages propose an amount at or slightly above the calculated RCP.
What happens after you file
The IRS acknowledges receipt within 30–45 days. During the review period (typically 6–12 months):
- IRS collection activity is paused under IRC §6331(k)
- The 10-year collection statute is suspended
- Any new tax liability that arises must be paid — otherwise the offer is deemed defaulted
- All required tax returns must remain filed
The IRS assigns an Offer Examiner who requests additional documentation as needed. Decisions come in three forms: accepted (issued as a written determination), rejected (with a 30-day appeal window to IRS Office of Appeals), or returned (procedural — offer is treated as never filed).
Common Form 656 package mistakes
- Missing supporting documents. The IRS returns incomplete packages without processing. The application fee and down payment are typically applied to the balance owed rather than refunded.
- Understating income or assets. The IRS pulls transcripts and cross-references bank records. Discovered omissions terminate the offer and can trigger criminal referral in extreme cases.
- Proposing an amount below RCP. The most common rejection reason. Calculate RCP correctly first; base the offer on that number.
- Filing while returns are unfiled. All required returns must be filed before the IRS will process the OIC. See back taxes and unfiled returns.
- Not remaining compliant during review. Missing a required estimated tax payment while the OIC is under review defaults the offer.
Alternatives if OIC is not the right fit
Form 656 is not always the answer. If the calculation shows your RCP roughly equals or exceeds the balance owed, an OIC will not be accepted. Alternatives:
- Installment agreement — including partial-pay installment agreement (PPIA)
- Currently Not Collectible status — pauses collection when income barely covers necessary living expenses
- Penalty abatement — reduces the balance rather than settling it
Luisa N. Victoria, EA, prepares and represents Offer in Compromise submissions for taxpayers in all 50 U.S. states — including RCP calculation, package assembly, and Appeals defense if the IRS rejects. Book a free strategy session to determine whether an OIC is realistic for your case before you spend the $205 fee.
