· 6 min read · worthmydegree.com
When the federal minimum comes back
Take a borrower two and a half years into paying down private loans at 9.6 to 12 percent, from over $200,000 down to $115,000, with $13,000 of federal loans sitting at under 6 percent on SAVE and costing nothing a month. Now SAVE's forbearance is ending, a federal payment is due, and the plan feels broken. Should the small federal loans be cleared out of the emergency fund just to have one bill fewer?
The answer is no, and this guide is the arithmetic behind it, because the same question is about to be asked by everyone who used the $0 months the same way.
Every figure below is computed with this site's repayment tool on that borrower's numbers, rounded, with a tilde. The assumptions filled in: $13,000 of federal Direct loans at 5.5 percent, $102,000 of private loans at 11 percent with ten years left on them, an income of $70,000, single, no dependents. Change any of them in the tool and the figures move; the shape does not.
The federal minimum on a small balance
The first thing to know is what the federal loans actually ask for. On $13,000 at 5.5 percent:
| Plan | Monthly payment | Paid off in | Total interest |
|---|---|---|---|
| Standard, 10-year | ~$141 | 10 years | ~$3,900 |
| Extended, 25-year | ~$80 | 25 years | ~$10,900 |
| IBR, at $70,000 of income | ~$141 | 10 years | ~$3,900 |
| RAP, at $50,000 of income | ~$167 | ~6 years | ~$2,400 |
| RAP, at $70,000 of income | ~$350 | ~3 years | ~$1,200 |
| RAP, at $90,000 of income | ~$600 | under 2 years | ~$700 |
Two things in that table are not obvious. The IBR row is not a typo: an income-driven payment under IBR can never exceed what the 10-year Standard plan would charge (34 CFR 685.209(f)), so on a small balance IBR simply becomes the Standard payment for anyone earning much above $40,000. And RAP has no such ceiling. Its payment is a share of the whole income, so on a $13,000 balance it asks $350 a month from a $70,000 earner, two and a half times the Standard payment, and clears the loan in about three years whether the borrower wanted that or not. Less interest, because the loan is gone sooner, but every extra dollar of that payment was taken off a 5.5 percent loan while an 11 percent one waited. For a borrower whose federal balance is small and whose private balance is large, RAP asks the largest monthly payment of any federal plan above roughly $42,000 of income. It is built for large balances against modest incomes, and this is the opposite case.
The lowest legitimate payment is the Extended plan at about ~$80. It costs nearly three times the interest over its own life, which is the usual reason to avoid it, and the usual reason does not apply here: every dollar it frees is going to a loan charging twice the rate. Stretching a 5.5 percent loan to feed an 11 percent one is the avalanche working as designed. If the private loans are ever gone, the federal payment can go back up; nothing on a fixed plan stops prepaying.
Where the extra dollar goes
Avalanche means the surplus goes to the highest rate. Snowball means it goes to the smallest balance. Here the highest rate and the smallest balance are on different loans, so the two methods disagree, and the cost of choosing wrong can be counted.
Take the required payments on both sides, about ~$141 federal and about ~$1,405 private on a ten-year schedule, and add a surplus on top.
| Surplus each month | Avalanche: total interest, months to debt-free | Snowball: total interest, months to debt-free | Snowball costs |
|---|---|---|---|
| $500 | ~$42,200, 77 months | ~$46,100, 79 months | ~$3,800 and two months |
| $1,000 | ~$30,500, 58 months | ~$33,500, 59 months | ~$3,000 and one month |
The gap is a few thousand dollars, which is real money and is not a catastrophe. It is the price of clearing the small loan first, and anyone who wants one bill fewer badly enough can decide it is worth that. What it is not is a plan that was broken by SAVE ending. The federal payment coming back changes the surplus, not the order.
The one case where the snowball is honest
There is one argument for the snowball that survives the arithmetic. When the minimums rise far enough that there is no surplus left at all, the order of attack is moot, because there is nothing to attack with. Paying off one small loan is then a way to get a margin back: its minimum disappears, and the freed cash is the surplus the avalanche needs. That is a cash-flow decision, and it is a fair one for a household whose budget just lost its slack.
It is not this household's case, and the numbers say why. The federal minimum is ~$80 to ~$141 a month, which is the slack in question. Clearing $13,000 out of an emergency fund to remove it costs about ~$3,100 more in interest and takes two months longer than putting the same $13,000 against the private loans, because the money leaves an 11 percent balance alone to keep growing. The emergency fund is also the thing that keeps a lost job or a car repair from landing on a credit card at a rate above either loan. Keep it shut.
The exit from SAVE, and the interest sitting on it
Interest has accrued on SAVE balances since August 2025 with no payment due, so by the time a payment comes back about eleven months of it is sitting unpaid: on $13,000 at 5.5 percent, roughly ~$650. It is owed either way. Whether it is added to the principal depends on the route out, and the switching guide covers which exits capitalize and which do not. On a balance this size the difference is about ~$7 a month on a Standard payment, so it is worth knowing and not worth agonizing over. On a $60,000 balance it is a different sentence.
The private loans are the problem, and this site cannot price them
Look past the framing and the burden here is $102,000 at 11 percent, and the federal loans are a rounding error beside it. A refinance is the lever on that side, and a common objection to it rests on a misreading. Suppose this borrower will not consolidate because a parent cosigned the original loans and they are no longer in contact. A refinance is a new loan in the borrower's own name; the cosigner on the old loan is not part of the application, and a borrower who has paid $85,000 in thirty months has the record a lender looks at. Whether the rate offered beats 11 percent depends on credit and income, and this site has no lender data and does not price it.
What the repayment tool does price is everything on the federal side, and where the next dollar should go once the private terms are known.
Run your own numbers
The repayment tool opens on this borrower's numbers. Change the balances, the rates and the income to yours, and it prices every current federal plan side by side, says which loan an extra dollar should go to and why, and, if you enter your age, says how old you will be at the last payment on the plan you pick.