How is Reasonable Collection Potential calculated?

Reasonable Collection Potential (RCP) is the IRS's calculation of how much it can collect from a taxpayer over the remaining Collection Statute Expiration Date. For Offers in Compromise filed under Doubt as to Collectibility — which is about 95% of all OICs — RCP is the floor for an acceptable offer. Per IRM 5.8.5.4, the formula is:

RCP = Net Realizable Equity in assets + Future Income Component

That looks simple, but every term has substantive rules. Get one wrong and you either over-pay by tens of thousands of dollars or you submit a low-ball offer that gets returned. This page walks through every line.

Step 1: Net Realizable Equity (NRE)

Net Realizable Equity is the IRS's estimate of what it could realize from a forced sale of your assets. The starting point is Quick Sale Value, which the IRS sets at 80% of Fair Market Value for most asset classes — reflecting the discount typically realized when assets are sold under collection pressure. From QSV, the IRS subtracts encumbrances (loans, liens) and applies class-specific exemptions.

Asset class	Starting value	Deductions	IRM section
Real estate	80% of FMV	Mortgages and liens senior to the federal tax lien	5.8.5.4(2)
Vehicles	80% of FMV (trade-in value)	Loan balance + per-vehicle exemption ($3,450) — 2 vehicles for joint filers, 1 for single	5.8.5.4(3)
Bank accounts	Lower of current balance or 3-month average	First $1,000 (operating cash floor)	5.8.5.6
Retirement accounts	Account balance	Marginal federal tax + 10% early-withdrawal penalty if under 59½ + outstanding loan	5.8.5.6
Securities	80% of current market value	—	5.8.5.4
Life insurance	Cash surrender value (not face value)	—	5.8.5.4
Business assets	80% of FMV (equipment, inventory, receivables)	Encumbrances	5.8.5.4

A retirement-account example

Suppose you have $100,000 in a traditional 401(k), you are 48 years old, and your marginal federal rate is 22%. Many taxpayers (and some practitioners) treat the $100,000 balance as NRE directly. That overstates RCP by $32,000.

The correct calculation:

• Balance: $100,000
• Federal tax at 22%: −$22,000
• Early-withdrawal penalty at 10% (under 59½): −$10,000
• NRE: $68,000

If you were 65 instead of 48, the same $100,000 balance produces $78,000 NRE — no penalty applies. The IRS will not value your account at the gross balance. Per IRM 5.8.5.6.

A vehicle-exemption example

Two vehicles, joint filers:

• Vehicle 1: FMV $20,000, loan balance $5,000
• Vehicle 2: FMV $12,000, loan balance $4,000

Step by step:

• Vehicle 1 QSV: $20,000 × 80% = $16,000; less $5,000 loan = $11,000; less $3,450 exemption = $7,550 NRE
• Vehicle 2 QSV: $12,000 × 80% = $9,600; less $4,000 loan = $5,600; less $3,450 exemption = $2,150 NRE
• Total vehicle NRE: $9,700

For a single filer with the same vehicles, only the higher-equity car gets the exemption. Vehicle 2's NRE becomes $5,600 (no exemption), bringing total vehicle NRE to $13,150 — about $3,450 higher.

Step 2: Monthly Disposable Income (MDI)

MDI is your monthly gross income minus your allowable monthly expenses. The key wrinkle is what counts as "allowable" — the IRS doesn't use your actual expenses if they exceed the Collection Financial Standards (CFS) for your county and household size.

Income includes (per IRM 5.15.1.7):

• Gross wages (before tax)
• Net self-employment income
• Net rental income
• Investment and retirement income (Social Security, pensions, distributions)
• Other recurring income

Allowable expenses are the lower of your actual amount or the CFS-capped amount, by category:

Expense category	Cap source	Cap basis
Food, clothing, personal care, miscellaneous	National Standard	Household size (e.g., $1,481/month for a 2-person household, current as of April 2025)
Out-of-pocket healthcare	National Standard	Per person by age (currently $83/month under 65, $158/month over 65)
Housing & utilities	Local Standard	County of residence × household size
Vehicle ownership (loan/lease)	National Standard	$619/month per car, up to 2 cars for joint filers
Vehicle operating	Local Standard	Region or MSA-specific monthly amount per car
Health insurance premiums	Not capped	Actual amount allowed
Court-ordered, childcare, secured debts	Necessary Expense	Allowed in full with substantiation

National Standards have a special rule: you get the full standard amount regardless of whether you actually spend it. If the National Standard for your household is $1,481 and you spend only $800 on food and clothing, the IRS still allows $1,481. Many taxpayers undersell themselves by claiming actuals here; the standard is automatic.

Step 3: Future Income Component

The future income component is MDI times a multiplier, capped at remaining CSED:

Future Income Component = max(0, MDI) × min(multiplier, CSED months remaining)

Per IRM 5.8.5.20, the multiplier is:

• 12 months for a lump-sum cash offer (paid in 5 or fewer installments within 5 months of acceptance)
• 24 months for a periodic payment offer (paid in monthly installments over up to 24 months)

The CSED cap is critical. The IRS has 10 years from the date of assessment to collect, with extensions for tolling events (pending OIC, bankruptcy, CDP hearing, etc.). If your remaining CSED is 8 months, your future income component is MDI × 8 regardless of the offer structure. Both lump-sum and periodic RCPs collapse to the same number.

This is one of the main reasons a Partial Pay Installment Agreement often outperforms an OIC for taxpayers with short CSEDs: a PPIA collects MDI per month until CSED expiration, then the remaining balance is uncollectible. An OIC requires the full RCP up front.

Step 4: Add it together

RCP equals NRE plus the future income component. For most cases you compute it twice — once at the lump-sum multiplier, once at the periodic multiplier — and pick the structure based on your liquidity and CSED.

A worked example

Joint filers in Philadelphia, $50,000 in tax debt, both age 45, no special circumstances.

Assets:

• $2,500 checking → NRE: $1,500 (after $1,000 floor)
• One 2019 sedan, FMV $15,000, loan $3,000 → NRE: $12,000 × 80% − $3,000 − $3,450 = $5,550
• 401(k), $30,000 balance → NRE: $30,000 − 22% tax − 10% penalty = $20,400

NRE total: $27,450

Monthly income & expenses:

• Wages: $5,200
• Housing & utilities (actual): $1,800; CFS cap for Philadelphia 2-person: $2,593 → allowed $1,800
• Vehicle ownership (actual): $380; CFS cap: $619 → allowed $380
• Vehicle operating (actual): $300; CFS cap: $343 → allowed $300
• Health insurance: $200 → allowed $200
• Out-of-pocket healthcare: $80; CFS cap (2 × $83): $166 → allowed $80
• National Standard (auto): $1,481

Total allowed expenses: $4,241 MDI: $5,200 − $4,241 = $959

Future income:

• Lump-sum (× 12): $11,508
• Periodic (× 24): $23,016

RCP:

• Lump-sum: $27,450 + $11,508 = $38,958
• Periodic: $27,450 + $23,016 = $50,466

Under these numbers, a lump-sum offer is dramatically cheaper. The taxpayer would need cash on hand for the $7,792 deposit (20% of the offer at filing) plus the remaining $31,166 within 5 months. If that's not feasible, the periodic offer over 24 months may make more sense even at the higher total cost.

What the IRS Pre-Qualifier doesn't show

The IRS's own Pre-Qualifier tool runs a version of this calculation but doesn't show you both offer structures, doesn't account for Effective Tax Administration paths, and doesn't compare RCP against alternatives like PPIA or CNC. For many taxpayers — especially those with short CSEDs, special circumstances, or substantial necessary expenses — those omissions matter more than the calculation itself.