The choice comes down to cash on hand versus cash flow. A lump sum offer is paid in five or fewer installments, and it usually produces a lower offer amount. A periodic payment offer is paid monthly over a longer period, and it usually produces a higher offer amount. Neither is “better.” The right one is the one you can finish paying without defaulting, because the IRS does not refund what you have already paid if the offer fails.
Below, I walk through how each option works, how the choice changes the number the IRS wants, a worked example, and the traps I see most often.
TL;DR
- Lump sum: pay 20% of the offer with your application, then the balance within five months of acceptance.
- Periodic: pay in 6 to 24 monthly installments, starting with the first payment on the application, and keep paying while the IRS reviews the offer.
- The math differs: the IRS counts future income over a shorter window for a lump sum and a longer one for periodic, so periodic offers tend to cost more in total.
- Payments are not refundable if the offer is rejected or returned. They are applied to your tax debt.
- Check eligibility first. The IRS accepted roughly 14% of offers in fiscal year 2025.
Table of Contents
- How the two payment options work
- Why the choice changes your offer amount
- How to decide which fits you
- What happens if the offer is rejected or returned
- Mistakes to avoid after you choose
- Our perspective: pick the payment you can finish
- Getting help with your offer
- FAQ
- Sources
How the two payment options work
Every offer in compromise (OIC) asks the IRS to settle your tax debt for less than you owe. The payment option you select on the application decides when the money moves.
Lump sum offer
The IRS defines a lump sum offer as one paid in five or fewer installments within five or fewer months after acceptance. When you apply, you send:
- the $205 application fee, and
- a nonrefundable initial payment of 20% of the total offer amount.
The balance is due after the IRS accepts. Those two payments are sent separately, one for the fee and one for the initial payment.
Periodic payment offer
A periodic payment offer is paid in 6 to 24 monthly installments. You include the first monthly payment with the application. You then keep paying each month while the IRS evaluates the offer. If you stop, the IRS returns the offer, and a returned offer carries no appeal rights.
That last point surprises people. Many assume that a job loss or a bad month lets them pause payments during review. It does not. Think of the periodic option as a commitment that starts the day you file, not the day the IRS says yes.
Side-by-side comparison
| Feature | Lump sum | Periodic payment |
|---|---|---|
| Payment term | 5 or fewer installments, within 5 months of acceptance | 6 to 24 monthly installments |
| Paid with application | $205 fee plus 20% of the offer | $205 fee plus first monthly payment |
| Payments during IRS review | None after the initial 20% | Required every month |
| Future income counted | 12 months of disposable income | 24 months of disposable income |
| Typical offer amount | Lower | Higher |
| Cash needed early | More | Less |
| Risk if finances change | Lower once the 20% is paid | Missed payment returns the offer |
Low-income taxpayers are treated differently. An individual who meets the Low-Income Certification guidelines does not have to submit the fee or offer payments with the application.
Why the choice changes your offer amount
The IRS will not accept an offer below your Reasonable Collection Potential (RCP), which is what it believes it could collect from you. The IRS builds RCP from your assets and your expected future income, minus allowable living expenses. The Taxpayer Advocate Service explains that the RCP calculation plays a vital role in whether an offer is accepted.
The future income piece is where lump sum and periodic diverge. Under the IRS offer booklet’s financial worksheet, the monthly disposable income figure is multiplied by 12 for a lump sum offer and 24 for a periodic payment offer. The logic is simple: if you pay quickly, the IRS gets its money sooner and counts less future income. If you pay slowly, it counts more.
The asset side does not change with your payment option. Equity in a home, vehicles, bank accounts and investments is counted either way.
A worked example
The numbers below are illustrative only. They show the mechanics, not a prediction for your case.
Assume a taxpayer owes $60,000, has $10,000 of net realizable equity in assets, and has $500 of monthly disposable income after allowable expenses.
| Lump sum | Periodic | |
|---|---|---|
| Asset equity | $10,000 | $10,000 |
| Future income | $500 × 12 = $6,000 | $500 × 24 = $12,000 |
| Minimum offer (RCP) | $16,000 | $22,000 |
| Due with application | $3,200 (20%) plus $205 fee | First monthly payment plus $205 fee |
| Remaining | $12,800 within five months of acceptance | Remaining monthly payments |
The lump sum costs $6,000 less, but you need $3,200 on day one and $12,800 within five months after acceptance. The periodic route costs more in total, but if you spread $22,000 across 24 months, the monthly payment is roughly $917. Whether that is realistic depends entirely on where the cash would come from.
How to decide which fits you
Ask these questions in order.
- Can you raise the full offer within about five months of acceptance without creating a new problem? If you can do it from savings, a sale of an asset or help from family, lump sum usually wins on total cost.
- Where would the money come from? Pulling cash from an IRA or 401(k) can create a new tax debt that undermines the whole effort. Talk to a tax professional before you liquidate retirement assets.
- Is your income steady? Periodic payments require every month to be paid during review and afterward. An unstable income makes that risky.
- Do you have unusually high income relative to expenses? The 24-month multiplier then raises the periodic offer sharply, and a lump sum may be worth the effort to fund.
- Are you likely to qualify at all? If the IRS decides you can pay in full through an installment agreement, it generally rejects the offer.
Pro tip: Before picking an option, compute both RCP figures. Sometimes the gap between the two is small enough that the lower early cash demand of periodic payments is worth it. Sometimes the gap is large enough to justify borrowing from a relative.
What happens if the offer is rejected or returned
This is the part most online summaries bury. Offer payments are not held in escrow. If the IRS rejects or returns your offer, the initial payment and any periodic payments are applied to your tax liability, not refunded. That is not a total loss, since the money reduces what you owe. But it is money you could not use for other purposes, such as an installment agreement or living expenses.
The odds matter too. In fiscal year 2025, taxpayers proposed 38,797 offers and the IRS accepted 5,464, about 14%. Filing an offer you are unlikely to qualify for just to buy time is a costly mistake. Our own breakdown of why the IRS rejects offers in compromise covers the most common reasons.
Mistakes to avoid after you choose
- Skipping a periodic payment. The IRS returns the offer, with no appeal.
- Understating assets or overstating expenses. The IRS applies its own standards, and unsupported figures raise your RCP or get the offer denied.
- Filing with unfiled returns or unpaid current taxes. All required returns must be filed before the offer is considered. Our IRS delinquent returns service exists for exactly this situation.
- Assuming forgiven debt is taxable income. Under IRS guidance, a compromise of a tax debt does not itself create taxable income, as Topic 204 explains.
- Falling out of compliance afterward. You must file all returns and pay all taxes on time for five years after acceptance, or the IRS can default the offer.
Our perspective: pick the payment you can finish
After decades of working IRS cases, we have found that people pick a payment option by looking at the offer amount alone. The lower number of a lump sum is attractive, and it should be. But the number that matters is the one you can actually pay without damaging the rest of your finances.
We start by building the financial picture the way the IRS will: assets at quick-sale value, income, and allowable expenses. Then we run both options. Sometimes lump sum is clearly right. Sometimes periodic is the only version a client can sustain, and the extra cost is the price of keeping the offer alive. And sometimes the honest answer is that an offer is the wrong tool, and an installment agreement or penalty relief fits better.
The Taxpayer Advocate’s study of the OIC program highlights how much the RCP analysis drives results. That is why we do not file until the numbers hold up. A rejected offer is not a pause button for collection, and it is not a free try.
— Joe
Getting help with your offer
If you are weighing the two options, a short review of your finances will tell you which offer amount is realistic and whether an offer is the right path at all. We prepare and file offers in compromise and represent clients before the IRS. See our IRS offer in compromise service for how we work, read the overview of types of offers, or book a consultation with Joe.
For a broader view, our complete guide to the IRS offer in compromise walks through eligibility, forms and timing.
FAQ
Which is cheaper, a lump sum or a periodic payment offer?
A lump sum offer is usually cheaper in total because the IRS multiplies your monthly disposable income by 12 instead of 24. The tradeoff is that you need more cash early. Whether the savings are worth it depends on where that cash comes from.
Can I switch from periodic to lump sum after I apply?
The payment option is part of the application, and changing it midstream is not something to assume. Ask your representative to contact the IRS about your specific offer before you change anything. Do not stop making periodic payments while you wait for an answer, because missed payments cause the IRS to return the offer.
Do I get my money back if the IRS rejects my offer?
No. Offer payments are applied to your tax debt if the offer is rejected or returned. The exception is the low-income rule, under which qualifying individuals do not submit the fee or offer payments with the application.
How often does the IRS accept an offer in compromise?
In fiscal year 2025, the IRS accepted 5,464 of 38,797 proposed offers, roughly 14%. Acceptance depends on your finances, not on which payment option you choose. Offers that do not reach your Reasonable Collection Potential are generally not accepted.
Is the amount forgiven in an offer in compromise taxable?
IRS guidance says a compromise of the tax debt itself does not create taxable income. You must still file and pay on time for five years after acceptance. Ask your CPA how the settlement interacts with your particular return.
Sources
- Offer in compromise, Internal Revenue Service
- Form 656-B, Offer in Compromise Booklet
- Topic no. 204, Offers in compromise
- Offer in compromise FAQs, Internal Revenue Service
- IRS data on collections, activities, penalties and appeals
- A Study of the IRS Offer in Compromise Program for Business Taxpayers, Taxpayer Advocate Service