Idaho Offer in Compromise Calculator
This offer in compromise calculator estimates your IRS settlement using the Form 656-B reasonable collection potential formula for Idaho filers. Idaho is one of nine community-property states, which changes how a married couple's assets and income enter the RCP calculation even when only one spouse owes the IRS.
Enter your numbers below to see what the IRS is likely to accept.
Idaho law and cost context
Idaho is a community-property state, so income and assets acquired during the marriage are presumed jointly owned. When only one spouse owes the IRS, the community half of the non-liable spouse's wages generally still counts toward RCP unless the non-liable spouse files their own Form 8857 or the couple has a written separate-property agreement. Idaho's individual income tax is a 5.3% flat rate (retroactively reduced from 5.695% by House Bill 40, effective 2025). Idaho state tax withholding is treated as an allowable expense on Form 433-A(OIC), reducing future monthly income for RCP purposes. Idaho's homestead exemption protects the lesser of 50% of assessed value or $125,000 for the primary residence and up to one acre — but this state protection does not reduce the IRS quick-sale value, which remains 80% of fair market value minus any secured debt.
Idaho does not operate a formal offer-in-compromise program at the Idaho State Tax Commission, so state income-tax debt is generally resolved through installment agreements or a compromise negotiated case-by-case with Collections. This means an accepted IRS OIC does not resolve Idaho state tax — file that separately. Idaho aggressively uses tax warrants recorded at the county recorder's office, which behave like judgment liens and remain on real property indefinitely until satisfied, so IRS OIC filers with Idaho real estate should confirm state-level lien status before offering.
How it's calculated
The Reasonable Collection Potential is the IRS's core measure of what you can actually pay. Form 656-B splits it into two parts: Net Realizable Equity (NRE) in your assets plus your Remaining Monthly Income (RMI) times a multiplier. For a Lump-Sum Cash Offer, the multiplier is 12 — you're saying you'll pay in 5 or fewer installments within 5 months. For a Periodic Payment Offer, the multiplier is 24, spread over 6 to 24 months. If RCP is less than your tax debt, the IRS has a mathematical reason to accept less than the balance.
The asset-side numbers are not fair market value. Under IRM 5.8.5, the IRS discounts every asset class. Real estate is valued at 80% of its FMV (the 'quick-sale value') minus your mortgage. Vehicles are valued at 80% of FMV, and you get a $3,450 statutory exemption per vehicle for up to two vehicles. Retirement accounts are discounted to about 72% of balance to reflect income tax plus the 10% early-withdrawal penalty. Bank accounts count in full, minus one month of allowable living expenses set aside as a reserve. Taxable investments count at 100%. The calculator above applies these rules line by line — the asset breakdown card shows every step.
The income side is where most amateur OIC filings go wrong. The IRS does not compare your income to what you actually spend — it compares your income to what the IRS Collection Financial Standards say you're allowed to spend for housing, food, transportation, healthcare, and taxes based on your county and family size. If your actual spending exceeds those tables, the excess doesn't count. An OIC prepared without the Collection Financial Standards in hand routinely overestimates disposable income and undershoots the offer.
The $205 application fee is waived if your income is at or below 250% of the federal poverty guidelines (Low Income Certification on Form 656, Section 1). Low-income filers also skip the 20% lump-sum down payment and the monthly payments the IRS otherwise requires during processing. The IRS accepted 7,199 of 33,591 offers in FY2025 — a 21.4% acceptance rate — so offers built to this floor are a real path. The tax resolution hub shows how OIC fits alongside installment agreements, hardship (CNC) status, and penalty abatement.
Common mistakes to avoid
- Using your actual monthly expenses instead of the IRS Collection Financial Standards. The IRS overrides your actual with the allowed amount for your county and family size, so ignoring the standards inflates your remaining income and pushes the offer floor higher than it needs to be.
- Reporting fair-market value for real estate and vehicles. The IRS uses 80% quick-sale value; your NRE (and thus your offer floor) drops when you calculate it correctly.
- Forgetting the $3,450 vehicle exemption per vehicle (up to two vehicles) — a common $6,900 miss.
- Skipping Low Income Certification when you qualify. The $205 fee, the 20% down payment on lump-sum offers, and the monthly payments during processing all disappear if your AGI is ≤ 250% of federal poverty guidelines.
- Making the offer higher than the RCP floor to 'seem generous.' The IRS accepts the RCP — offers meaningfully above it just leave money on the table.
- Skipping the Form 656 pre-qualifier. It's free at irs.gov/oic and rejects some cases before you spend the $205 — the IRS itself tells you if you're not eligible.
Frequently asked questions
What is an offer in compromise calculator?
An offer in compromise calculator applies the IRS Form 656-B Reasonable Collection Potential worksheet to your financials and returns the minimum offer amount the IRS is likely to accept. The calculator above breaks down your Net Realizable Equity by asset class using IRM 5.8.5 discount rules, adds your remaining monthly income times the correct multiplier (12 for lump-sum, 24 for periodic), and flags whether an OIC is mathematically viable versus your balance.
How does the IRS calculate an offer in compromise?
The IRS calculates an offer in compromise using Reasonable Collection Potential: net asset equity plus future remaining income times a multiplier. Assets are valued after IRS discounts — real estate at 80% quick-sale value minus mortgage, vehicles at 80% with a $3,450 exemption per vehicle (up to two), retirement accounts at about 72% after tax and early-withdrawal penalty, cash minus one month of allowable expenses, and taxable investments at 100%. The multiplier is 12 for a Lump-Sum Cash Offer (paid in ≤ 5 installments within 5 months) or 24 for a Periodic Payment Offer (6–24 months).
What is the acceptance rate for an offer in compromise?
The IRS accepted 7,199 of 33,591 Offers in Compromise in FY2025 — a 21.4% acceptance rate — per the FY2025 IRS Data Book. FY2024 was 5,464 of 38,797 (14.1%). Acceptance is not random: offers built to the RCP floor (or slightly above) using the Form 656-B worksheet are the ones that get approved. Offers that ignore Collection Financial Standards or lowball the NRE calculation are the ones that get rejected.
What is the $205 application fee for an offer in compromise?
The $205 Offer in Compromise application fee is required on every Form 656 unless you qualify for Low Income Certification, which waives it. Low Income Certification applies when your adjusted gross income is at or below 250% of the federal poverty guidelines for your household size. Low-income filers also skip the 20% lump-sum down payment (required with non-low-income lump-sum offers) and the monthly payments the IRS otherwise requires during processing.
Can I do an offer in compromise myself?
Yes. Form 656 and Form 433-A(OIC) are public, the Reasonable Collection Potential worksheet in Form 656-B is the same math the calculator above applies, and the IRS provides a pre-qualifier tool at irs.gov/oic. DIY makes the most sense for straightforward W-2 income with simple assets. Professional help (Enrolled Agent, CPA, or tax attorney; typically $3,500–$7,500 for OIC prep) becomes worth it when you have self-employment income, complex assets, multiple tax years, or the IRS is already actively collecting.
What happens if my offer in compromise is rejected?
A rejected offer in compromise leaves you with three next steps. You can appeal within 30 days via Form 13711 (Request for Appeal of Offer in Compromise) — many offers succeed on appeal because the IRS re-runs the RCP math with your correction. You can submit a revised offer if the reason was an incorrect asset or income figure. Or you can switch to an Installment Agreement — a streamlined online IA is available if your combined debt is ≤ $50,000. While the OIC is pending, the 10-year Collection Statute Expiration Date is tolled, plus 30 days after rejection.
Sources
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