Key Points
- A fifth year at an in-state public adds about $25,850 in tuition, housing and food, and $30,990 once books, transportation and personal costs are counted, based on College Board’s 2025–26 averages.
- Transfer students lost an estimated 43% of their credits on average, according to the GAO, and only 64% of students who started a bachelor’s in fall 2014 finished within six years.
- Remedial classes, housing costs and lost federal aid round out the list, and each one can be planned for before a student enrolls.
Most families plan for 4 years of college, but the truth is only 49% of students are done in that period of time. When it comes to the financial side of things, that extra year is seriously impactful. And that is only one of the big money derailers that students and their families face when it comes to paying the college bill.
College Board’s Trends in College Pricing 2025 puts the average annual budget at an in-state public at $30,990, which is the baseline behind what families really pay for college out of pocket. And for most families, college is usually the second- or third-largest expense they ever pay in their lives.
Here are the six money derailers that do the most damage. Each one adds time, cost or both, and the cheapest moment to plan around them is while the college list is still being built, ideally with a tool like the College ROI Calculator open in another tab.
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1. A Fifth Year
Average published tuition and fees at four-year in-state publics reached $11,950 in 2025–26, and housing and food added $13,900, according to the College Board. One extra year at those rates costs about $25,850. Books ($1,330), transportation ($1,240) and other expenses ($1,570) push the full fifth-year budget to $30,990, well above the average cost of college families plan for.
A fifth year funded with student loans runs into federal undergraduate borrowing limits, which cap both annual and lifetime amounts. Another cost is the paycheck that starts a year later, along with a year of missed retirement contributions that never get to compound.
Staying on pace takes a solid plan. A 120-credit degree spread over eight semesters requires 15 credits a term, while full-time status for aid purposes starts at 12. Students who want to move faster than that have options too, since nearly 60 colleges now offer three-year bachelor’s degrees, along with the myriad of AP and dual enrollment options as well.
2. Taking Remedial Classes
Remedial courses teach material students were expected to master in high school, and they charge full tuition without counting toward a degree. UC San Diego’s four-unit MATH 2 is listed as “workload credit only—not for baccalaureate credit” in the campus course catalog, and our reporting on the class filling up this fall put its tuition cost at about $1,762. Each extra quarter of catch-up there adds roughly $6,608 in tuition and fees.
Good grades don’t guarantee a pass on the placement exam. More than 25% of students placed into MATH 2 carried a 4.0 high school math GPA, according to a UC San Diego Academic Senate workgroup report. It’s why we’ve been sounding the alarm on test-optional now for several years.
Students can work this in the other direction. A strong high school math sequence and placement-test practice before orientation keep students out of no-credit courses, while dual enrollment and AP exams bank credits before the first tuition bill arrives.
And finally, if you have to catch up, take the classes at a community college where the cost is significantly lower.
3. Housing And Food
Housing and food now cost more than tuition at the average in-state public: $13,900 versus $11,950 in 2025–26, per College Board. We’ve labeled room and board the biggest hidden expense driving up college costs, and it keeps running whether a student takes 12 credits or 18. That’s why every other derailer on this list gets more expensive, since a delayed graduation means another year of rent.
Families have more control over this line than over tuition. Picking the smallest meal plan that fits, comparing dorm rates against off-campus leases and knowing how to pay for college housing before signing a contract all move the number. Our room and board explainer covers what schools fold into that figure.
And at the end of the day, there’s nothing wrong with living at home.
4. Transferring
A Government Accountability Office analysis of students who transferred from 2004 to 2009 found they lost an estimated 43% of their credits on average. Students moving between public schools lost about 37%, and those moving from for-profit to public schools lost an estimated 94%.
Every lost credit is a class paid for twice, which feeds straight into the fifth year, and our breakdown of transferring colleges covers when a move is worth that cost.
The fix starts before enrolling. Students who begin at community college to save money should confirm transfer agreements with the four-year schools they’re targeting and get course-by-course equivalencies in writing. Anyone considering a switch should request a credit evaluation from the new school before committing.
5. Not Finishing
Only 64% of first-time, full-time students who started a bachelor’s degree at a four-year school in fall 2014 finished within six years, according to the National Center for Education Statistics. The rate was 63% at public schools, 68% at private nonprofits and 29% at for-profits.
We looked at why one-third of college students drop out without a degree, and finances is a top reason. What’s tough is that finances still impact those same students the worst: the debt stays, and the degree meant to pay it off never arrives.
Leaving mis-semester adds a second hit, because federal rules can require part of that term’s financial aid to be repaid, as we explain in what happens with financial aid if you drop out.
Price doesn’t predict completion either, and we found that more expensive colleges don’t automatically graduate more students. Check each school’s six-year rate with a college comparison tool before applying.
6. Losing Aid
Financial aid has to be renewed. Students must submit the FAFSA every year to keep receiving it, and missing a state or school FAFSA deadline can cost grant money that some states award until funds run out. The same is also true for most university aid.
Schools also have to check satisfactory academic progress at least once a year. SAP policies include a GPA standard, a pace-of-completion standard and a maximum timeframe of 150% of the program’s published length, which works out to 180 attempted credits for a 120-credit degree.
Our SAP explainer walks through each standard, and students who fall short can file an SAP appeal.
Pell Grants carry their own limit of 12 semesters, or 600%, over a lifetime, according to Federal Student Aid. A student who uses Pell on remedial terms, lost transfer credits and a fifth year can run out before finishing, so check the Pell Grant chart and plan the full timeline early.
The Six Derailers At A Glance
| Derailer | What It Costs | How To Avoid It |
|---|---|---|
| A Fifth Year | About $25,850 at an in-state public | Take 15 credits a term |
| Remedial Classes | About $1,762 per no-credit UCSD course | Prep for the placement exam |
| Housing And Food | $13,900 a year on average | Compare dorms, leases and meal plans |
| Transferring | 43% of credits lost on average | Get credit equivalencies in writing |
| Not Finishing | Debt with no degree | Check six-year graduation rates |
| Losing Aid | Grants and loans cut off | File the FAFSA yearly and meet SAP |
How To Plan Around All Six
Most of these costs are set before move-in day, through the choice of school, the credit map for a major and the housing contract. Families comparing financial aid offers should look past the first-year figure to the net price of college over the full time it will realistically take.
Running a five-year scenario through the student loan calculator, instead of a four-year one, shows the payment a student would face if one derailer hits. Compare that against the average student loan debt by graduating class, and the value of staying on a four-year track becomes a dollar figure.
Editor: Colin Graves
Robert Farrington is the founder of The College Investor and is widely recognized as one of the nation’s leading voices on student loan debt and saving for college. He holds an MBA from UC San Diego Rady School of Management and has spent over 15 years researching, writing, and advising on student loans, 529 plans, financial aid programs, and saving and investing for young professionals.
Robert has been featured in the The New York Times, The Wall Street Journal, The Washington Post, NBC News, and Forbes, where he has been a regular personal finance contributor for over a decade. His work combines both professional expertise and personal experience – he successfully navigated his own student loan repayment journey and has helped thousands of readers do the same.
He is committed to making the intersection of personal finance and education transparent and accessible. You can learn more about Robert on the About Page or on his personal site RobertFarrington.com.