Guides
Form 656: How an Offer in Compromise Works
Form 656 is the IRS application for an offer in compromise (OIC), a settlement that can resolve a federal tax debt for less than the full balance owed. You file it when you cannot pay the full liability and want the IRS to accept a smaller amount. Approval is not common: the IRS accepted about 21% of offers in fiscal year 2024. The form is submitted with a $205 application fee, financial disclosures, and an initial payment, and it is judged against a formula called reasonable collection potential.
What Form 656 is and who files it
Form 656 is the request to settle assessed federal tax for less than the amount owed. Most filers use it under “doubt as to collectibility,” meaning they lack the assets and income to pay in full before the collection period ends. It is filed with financial statements and a payment, not on its own, and the IRS reviews it against what it could otherwise collect.
The main offer is Form 656 (doubt as to collectibility or effective tax administration). A separate Form 656-L covers “doubt as to liability,” used when you dispute that you actually owe the tax. This guide focuses on Form 656 collectibility offers, which make up the large majority of filings.
To be eligible, a taxpayer generally must have filed all required tax returns, made required estimated tax payments for the current year, and not be in an open bankruptcy proceeding. Business filers with employees must also be current on federal tax deposits. An offer submitted while these conditions are unmet is often returned without consideration.
The reasonable collection potential (RCP) formula
Reasonable collection potential is the IRS estimate of the most it can collect before the collection statute expires, and it sets the floor for any acceptable offer. The standard formula is: RCP = net realizable equity in assets + future income (monthly disposable income multiplied by 12 or 24). An offer at or above RCP has a realistic chance; one below it is usually rejected.
Net realizable equity starts from each asset’s quick-sale value (QSV), which the IRS typically treats as about 80% of fair market value, then subtracts secured debt such as a mortgage or car loan. Common categories include home equity, vehicles, bank balances, and retirement accounts, with certain limited allowances applied.
Future income is monthly disposable income (income minus allowable living expenses) multiplied by a set number of months. The multiplier depends on how you propose to pay, which links the RCP formula directly to the payment option you choose.
| RCP component | How it is measured | Notes |
|---|---|---|
| Net realizable equity | Quick-sale value (roughly 80% of FMV) minus secured debt | Applied per asset |
| Future income (lump sum) | Monthly disposable income x 12 | Used with the lump-sum cash option |
| Future income (periodic) | Monthly disposable income x 24 | Used with the periodic-payment option |
Allowable living expenses often follow IRS Collection Financial Standards rather than actual spending, so a filer’s own budget and the IRS calculation can differ. The exact figures vary by household size, county, and circumstances.
Why the acceptance rate is low
The acceptance rate is low mainly because many offers come in below RCP, and RCP counts asset equity and future income that filers may underestimate. In fiscal year 2024 the IRS received 33,591 offers and accepted 7,199, roughly 21%. Across 2015 to 2024 the accepted share was closer to 37%, so year-to-year results swing.
A common reason for rejection is proposing less than the RCP formula supports, particularly when home or retirement equity is overlooked. Missing eligibility conditions, such as an unfiled return or a missed current-year estimated payment, can also lead to a return without a decision on the merits.
Because the numbers drive the outcome, many filers model their RCP before submitting. Filers who want the wider enforcement picture can review the IRS collections and enforcement data report for context on liens and levies.
Application fee and initial payment
Form 656 requires a $205 non-refundable application fee plus an initial payment, both sent with the application. Taxpayers who meet the IRS low-income certification guidelines can skip the fee and the initial payment and are not required to make monthly payments during review. Everyone else pays up front, and those amounts apply to the tax debt if the offer is rejected.
The application fee and the initial payment are separate items. The fee is a flat charge for processing the offer. The initial payment is money applied toward the proposed settlement, and its size depends on which payment option you select on the form.
If the IRS rejects or returns the offer, the $205 fee is generally not refunded, and payments already made are typically kept and applied to the outstanding balance rather than returned. That treatment is a reason to check the numbers carefully before filing.
Lump-sum vs periodic payment options
Form 656 offers two payment structures, and each changes both the initial payment and the RCP calculation. The lump-sum option requires 20% of the total offer with the application and the rest in five or fewer payments after acceptance. The periodic option requires the first monthly payment with the application and continued monthly payments during review.
The trade-off runs through the future-income multiplier. The lump-sum option multiplies monthly disposable income by 12, which can produce a lower total offer, but it demands 20% down and fast payoff. The periodic option multiplies by 24, generally raising the offer amount, while spreading payments over time.
| Feature | Lump-sum cash | Periodic payment |
|---|---|---|
| Initial payment with Form 656 | 20% of total offer | First monthly payment |
| Future-income multiplier | 12 months | 24 months |
| Payoff after acceptance | 5 or fewer payments | Monthly, per proposed terms |
| Payments during IRS review | Not required beyond the 20% | Yes, continue monthly |
Low-income certified filers are exempt from the 20% down payment and the interim monthly payments under either option. For most other filers, the choice weighs available cash now against a lower or higher total settlement figure.
The Pre-Qualifier tool and filing
The IRS Offer in Compromise Pre-Qualifier tool gives a preliminary read on eligibility and a rough offer amount before you file Form 656. It is free, and it walks through assets, income, and expenses using the same general logic as RCP. The result is an estimate, not a decision, and the IRS may calculate the numbers differently on review.
The tool is at irs.treasury.gov/oic_pre_qualifier/. It can flag basic disqualifiers, such as an open bankruptcy, and suggest a starting offer figure. Because it relies on the inputs you provide, an inaccurate asset or income entry can produce a misleading result.
A complete filing generally pairs Form 656 with Form 433-A (OIC) for individuals or Form 433-B (OIC) for businesses, the fee, and the initial payment. If the IRS does not decide within 24 months of receiving the offer, the offer is deemed accepted by law. An accepted offer also starts a five-year compliance period, and missing a filing or payment during it can default the agreement and restore the original balance.
Frequently asked questions
How much does it cost to file Form 656?
Filing Form 656 requires a $205 non-refundable application fee plus an initial payment toward the offer, both submitted with the application. Taxpayers who meet IRS low-income certification guidelines can skip the fee and the initial payment. If the offer is rejected, the fee is generally not refunded, and payments already made are usually applied to the outstanding tax debt.
What is reasonable collection potential?
Reasonable collection potential (RCP) is the IRS estimate of the most it can collect before the collection period ends, and it sets the minimum offer the IRS will usually accept. It equals net realizable equity in assets plus future income, where future income is monthly disposable income multiplied by 12 for a lump-sum offer or 24 for a periodic offer. Offers below RCP are commonly rejected.
What is the IRS offer in compromise acceptance rate?
In fiscal year 2024 the IRS accepted about 21% of offers, 7,199 out of 33,591 received. The rate varies by year and was higher across the prior decade, closer to 37% for 2015 to 2024. Acceptance depends heavily on whether the offered amount meets or exceeds the filer’s reasonable collection potential and whether eligibility conditions are met.
How much do I have to pay upfront with a lump-sum offer?
A lump-sum cash offer requires 20% of the total offer amount with Form 656, plus the $205 application fee. The remaining balance is then paid in five or fewer payments after the IRS accepts the offer. This 20% payment is required at submission and, in most cases, is not refunded if the offer is later rejected. Low-income certified filers are exempt from the 20%.
Should I use the IRS Pre-Qualifier tool first?
Using the Pre-Qualifier tool first can help, because it gives a free preliminary estimate of eligibility and a suggested offer amount before you commit the fee and initial payment. It applies logic similar to the RCP formula but is not binding, and the IRS may reach a different figure on review. The tool is available at irs.treasury.gov/oic_pre_qualifier/.
What happens if the IRS does not respond to my offer?
If the IRS does not issue a decision within 24 months of receiving the offer, the law generally treats the offer as accepted. Accepted offers then trigger a five-year compliance period, during which you must timely file and pay all required returns and taxes. Missing that requirement can default the offer and reinstate the original liability, often with penalties and interest.
Filers weighing an OIC against paying over time may also compare it with an installment agreement or with how estimated tax payments affect current-year compliance, since staying current is an eligibility condition. Those disputing the debt itself, rather than the ability to pay, would look at Form 656-L instead, and may first want to confirm the balance using an IRS tax transcript.
Reviewed by The Ledgerism Editorial Team. Last reviewed: July 2026.