Short-term payment plan: six months, no fee, interest still running
The calculator is set to the short-term option. Type the balance on your notice: it gives the even monthly amount that clears it within 180 days and what the interest and penalty add, then compares longer terms.
- Time to pay
- Up to 180 days
- Balance, combined
- Under $100,000
- Set-up fee
- $0
- Interest meanwhile
- 7 %
Monthly payment over 6 months
$3,187
Short-term plan, no set-up fee. Ends April 2027; you pay $19,117 in all for $18,500 owed today.
| Interest while the plan runs | $383 |
| Late payment penalty (0.50 % a month) | $234 |
| Set-up fee | $0 |
| Extra cost over today's balance | $617 |
Fees in force on irs.gov on October 20, 2026. Interest at 7 %, kept for future quarters. Estimate, not tax advice.
| Term | Monthly | Interest and penalty | Total paid |
|---|---|---|---|
| 6 months | $3,187 | $617 | $19,117 |
| 12 months | $1,619 | $925 | $19,425 |
| 24 months | $846 | $1,780 | $20,280 |
| 36 months | $588 | $2,642 | $21,142 |
| 72 months | $331 | $5,278 | $23,778 |
| 120 months | $229 | $8,967 | $27,467 |
Compiled by Radif Partners · How we calculate · rules and rates read on irs.gov · not tax advice, the IRS decides
A short-term payment plan gives an individual up to 180 days to pay a combined balance of tax, penalties and interest under $100,000. There is no set-up fee, by phone, mail, in person or online, which is where it beats a long-term installment agreement. It does not stop the meter: interest at the quarterly rate, 7 % in the fourth quarter of 2026, and the late payment penalty keep running until the last dollar is paid. There is no required monthly amount, only the deadline, so paying early saves money. On $18,500, six equal payments of $3,200 clear the balance by April 2027 and add $698. Spreading the same balance over 24 months would cut the payment to $851 but add $1,924 plus a fee of at least $29.
A deadline rather than a schedule
The IRS payment plan page describes the short-term plan in one line: pay the amount owed in 180 days or less. Once it is granted, payments can go through Direct Pay from a bank account, through the online account or EFTPS, or by check, money order or card, with processor fees on cards. Nothing fixes their size or date. One payment at day 170 is as acceptable as six monthly ones, though it costs more in interest. The page states the price twice: a $0 set-up fee, plus accrued penalties and interest until the balance is paid in full.
Because it is a deadline, the cheapest way to use it is to pay the moment money is available. A tax refund, a bonus or a sale of assets inside the window shortens the period on which interest runs. On $18,500, a single payment three months from now carries about $329 of interest alone, before any penalty month; paying a share each month instead lowers the base on which each day's interest is figured.
Two details shorten the real period. A federal refund issued inside the window is applied to the balance automatically, so it counts as a payment without any action. And the last payment has to be credited before the deadline: the IRS says to allow one to three weeks for a payment to appear on the account, three for a check sent by mail. Planning the final payment a few weeks before day 180 avoids a small leftover balance that would keep drawing interest.
What 180 days costs on different balances
The table spreads four balances evenly over six months and sets each against a 24-month installment agreement. The short-term plan has no fee; the long-term figure leaves out the fee, which starts at $29 with direct debit online.
| Balance | Six payments of | Added in 6 months | 24 payments of | Added in 24 months |
|---|---|---|---|---|
| $4,000 | $692 | $151 | $184 | $416 |
| $18,500 | $3,200 | $698 | $851 | $1,924 |
| $46,000 | $7,956 | $1,736 | $2,116 | $4,783 |
| $92,000 | $15,912 | $3,471 | $4,232 | $9,566 |
Your balance over 180 days
Monthly payment over 6 months
$2,171
| Interest while the plan runs | $261 |
| Late payment penalty (0.50 % a month) | $159 |
| Set-up fee | $0 |
| Extra cost over today's balance | $420 |
Short-term or a monthly agreement
The choice turns on one question: can the full balance be found within six months? If yes, the short-term plan is the cheaper of the two by the size of the fee and by the interest of the extra months. If not, committing to it and then missing the deadline leaves the balance unpaid and the penalty and interest running, while a monthly agreement would have set a payment that the budget can carry. A person with $92,000 to pay faces payments of $15,912 a month on a short-term schedule; few households carry that, and the installment agreement page sets out the alternatives.
The penalty side is worth checking too. The tax code cuts the late payment penalty to 0.25 % a month, instead of 0.5 %, for an individual who filed on time and only for months in which an installment agreement under section 6159 is in force (IRC 6651(h)). A short-term plan is not such an agreement, so the figures on this page keep the 0.5 % rate for the 180-day option and apply the reduced rate to the 24-month comparison only, as the calculator does. The IRS computes the actual penalty on your account.
Who can ask, and how
Individuals apply online for a short-term plan when they owe less than $100,000 in combined tax, penalties and interest; only individuals can do it online. Businesses call the number on their notice or the IRS business line. Anyone can also ask by phone, by mail or at a Taxpayer Assistance Center, still with no fee. The IRS page on past due returns adds that the request goes through the Online Payment Agreement application or the individual phone line, and that no user fee is charged. The returns that are due have to be filed, since a missing return keeps every kind of plan out of reach.
Protection while it runs, and what happens at the end
The IRS generally does not take enforced collection action while a payment plan is being considered or while it is in effect, according to the payment plan page. If the balance is not cleared by day 180, what is left is still owed, with its penalty and interest. The online account lets you revise the plan type, so the remaining balance can move into a long-term agreement, with that agreement's set-up fee, before the deadline passes. The IRS decides on each request and its terms; the amounts here are estimates.