The Reasonable Collection Potential Formula for an Offer in Compromise

The advertising around offers in compromise talks about pennies on the dollar. The IRS talks about reasonable collection potential. Only one of those decides whether an offer is accepted. If you can compute RCP, you know roughly what the IRS will accept before you file, and whether filing makes sense at all.

Where the formula comes from

IRC 7122(a) authorizes the IRS to compromise tax debts. IRC 7122(d) directs it to set guidelines for evaluating offers and to publish national and local expense allowances so taxpayers keep enough for basic living expenses. The Internal Revenue Manual turns that into arithmetic. IRM 5.8.5 is the financial analysis chapter, and it values your situation in two pieces.

Piece 1: net realizable equity

IRM 5.8.5.4.1 defines NRE as quick sale value less amounts owed to secured creditors with priority over the federal tax lien, and less applicable exemption amounts. Quick sale value is normally 80 percent of fair market value, though the IRS can use a different percentage when the market supports it. Asset-by-asset rules, including the allowances for cash and vehicles, are in quick sale value and net realizable equity.

Piece 2: future income

IRM 5.8.5.20 defines future income as gross income less necessary living expenses for a specific number of months. IRM 5.8.5.25 sets the months:

Allowable expenses come from the IRS Collection Financial Standards and the facts of your case. That analysis is its own subject. The multiplier math is in the future income guide.

Worked example: a single taxpayer

A single wage earner owes $95,000 across several years. Here is what the Form 433-A (OIC) shows. All values are hypothetical.

The lump sum version saves $7,200 in the offer amount because it uses 12 months of future income instead of 24. In exchange, it has to be paid within five months of acceptance.

What goes in with the offer

IRC 7122(c) adds cash requirements at submission:

• Lump sum offers (five or fewer installments) must be accompanied by 20 percent of the offer amount. On a $39,550 offer, that is $7,910.
• Periodic payment offers must be accompanied by the first proposed installment, and later installments must be paid while the offer is being evaluated. Missing one can be treated as a withdrawal under 7122(c)(1)(B)(ii).
• Under IRC 7122(c)(2)(A), you can specify how those payments are applied to the assessed tax and other amounts.
• Application fee. As of October 2026, the IRS offer in compromise page lists a $205 application fee, waived along with the initial payment for individuals who meet the low-income qualification.
• Under IRC 7122(c)(3), individuals with adjusted gross income at or below 250 percent of the applicable poverty level are exempt from the payment requirement and the user fee.

When the offer math says do not file

• RCP is close to or above the balance. The IRS will expect full payment, usually through an installment agreement.
• The CSED is near. A pending offer suspends the collection statute; see offer tolling. Waiting may cost less.
• You recently moved money. Assets transferred or spent on non-necessary items can be added back as dissipated assets under IRM 5.8.5.18.

What the IRS can still adjust

RCP is a starting point, not a promised outcome. The IRS verifies values, may use a different quick sale percentage, may average fluctuating income over three years under IRM 5.8.5.20, and can accept less than RCP only in special circumstances such as effective tax administration offers. Disagreements over values can go to mediation or Appeals. For the broader process, see Offer in Compromise Explained.

Worked example: when RCP exceeds the debt

Run the formula for a married couple who owe $140,000 jointly. Using the asset values in the quick sale value guide, their net realizable equity is $161,000: a home with $86,000 of equity, two cars, bank accounts, an IRA, and a whole life policy. Their monthly disposable income is $1,000. For a lump sum offer, future income is $12,000, and RCP is $173,000.

RCP is higher than the balance. On these numbers, the IRS will not accept a doubt as to collectibility offer, because it expects to collect the full $140,000. IRM 5.8.5.29 says an offer should not be accepted if the liability can be fully paid under installment agreement guidelines. The realistic paths are an installment agreement, borrowing against the home, or selling assets. Filing an offer anyway would only suspend the CSED for the months the IRS spends rejecting it.

Worked example: a short CSED shrinks RCP

Now a single taxpayer who owes $60,000 on one tax year with only eight months left on its collection statute. Net realizable equity is $5,000. Monthly disposable income is $500. Under IRM 5.8.5.25, when fewer than 12 or 24 months remain on the statute for all periods in the offer, the IRS uses the months remaining. Future income is $500 times 8, or $4,000, for either a lump sum or a periodic offer. RCP is $9,000.

A lump sum offer of $9,000 would require 20 percent, or $1,800, with the application under IRC 7122(c)(1)(A), unless the taxpayer qualifies for the low-income exception. But the same taxpayer has to weigh the alternative. The offer suspends the CSED while it is pending. If it is rejected, the eight months could become eighteen. If the IRS cannot realistically collect much in eight months, waiting may cost less than offering. That comparison belongs in every offer decision with a short statute.

Worked example: a periodic offer's payment schedule

Back to the single wage earner with RCP of $46,750 for a periodic offer. Periodic offers are paid within 6 to 24 months. Under IRC 7122(c)(1)(B), the first proposed installment goes in with the offer, and the taxpayer keeps paying the proposed installments while the IRS evaluates it. A 24-month schedule of roughly $1,948 a month would satisfy the amount; missing an installment during evaluation can be treated as withdrawing the offer. The lump sum version, at $39,550, costs less in total but needs the cash within five months of acceptance.

A worksheet for your own numbers

1. List every asset with its fair market value and any loan secured ahead of the federal tax lien.
2. Apply 80 percent to get quick sale value, subtract the loan, and apply the $1,000 cash and $3,450 vehicle allowances if you cannot full pay.
3. Value retirement accounts at what you would net after tax and any early withdrawal penalty.
4. Compute monthly disposable income from current income and allowable expenses.
5. Multiply by 12 or 24, or by the months left on the CSED if fewer.
6. Add equity and future income. Compare the total to the balance owed.

If the total is well under the balance, an offer may be realistic. If it is close to or over the balance, an installment agreement or another resolution is the likely result, and the time spent on an offer only extends the collection statute.

Keep in mind that the IRS can verify every input. Bank statements, vehicle valuation guides, property records, and retirement account statements are routine. An offer built on optimistic figures usually ends in a rejection and a longer CSED.

The bottom line

Reasonable collection potential is equity at quick sale value plus a fixed number of months of disposable income. Compute it honestly before you file. If your number is far below what you owe, an offer may be worth the paperwork. If it is close, it probably is not. The firm's offer in compromise page is a place to start if you want the numbers run professionally.