Cost & financial aid brief
California Polytechnic State University-San Luis Obispo Tuition, Costs & Financial Aid
How much does Cal Poly SLO cost after financial aid?
Aid covers about 48% of the published cost for the average aid recipient. The pattern across income bands shows where the support is concentrated.
The lowest two bands average $7,529 for families earning under $30,000 and $7,253 for those at $30,001–$48,000. The middle band averages $9,896, and the two highest bands average $15,786 and $27,772.
The spread between the lowest and highest bands is $20,243. That spread describes a pricing structure that keeps costs low for lower-income families while increasing steadily through the middle and upper bands.
California Polytechnic State University-San Luis Obispo publishes a cost of attendance of $32,265, an average. In-state tuition and fees are $13,596, and room and board are $18,792.
The average net price—what aid recipients pay after grants and scholarships—varies sharply by family income. For families earning under $30,000, the average net price is $7,529; for the middle band ($48,001–$75,000), it is $9,896; and for families earning over $110,000, it is $27,772.
The spread between the lowest and highest bands is $20,243, a difference of averages, not what any family pays. Azimuth ranks the university #428 for affordability among nonprofit four-year institutions.
Aid covers about 48% of the published cost for the average aid recipient, an offset of roughly $15,600 against the sticker price. The average net price across all aid recipients is $16,665, which sits above the peer median of $15,634 for comparable institutions (same type and size) by $1,031.
Out-of-state students face a higher published tuition of $34,665, though individual aid packages can shift the final cost. Median federal student debt at completion is $18,500.
That figure is below the peer median of $20,076 for comparable institutions by $1,576. About 83.0% of federal aid recipients borrow federal loans.
For a graduate at the median four-year earnings, that debt corresponds to an estimated payment of $210 a month if repaid over ten years. Median Parent PLUS borrowing among parent borrowers is $35,000.
Student loans: what does repayment look like?
Federal borrowing is widespread at California Polytechnic State University-San Luis Obispo, with 83.0% of federal aid recipients taking federal loans. Among federal-loan borrowers who completed, the median federal student debt is $18,500.
That median runs below the $20,076 median for comparable institutions (same type and size), a gap of $1,576. For parent borrowers, a separate population, the median Parent PLUS loan is $35,000.
If repaid over ten years, the estimated monthly payment on the median federal debt is $210.
At California Polytechnic State University-San Luis Obispo, the median for federally aided graduates who are working and not enrolled four years after completion is $90,662. That is $25,052 above the median for comparable institutions (same type and size).
It sits in the 94th percentile among nonprofit four-year institutions. Graduates earn about $19,345 more than expects for similar students.
The gap sits at the 95th percentile. Earnings scenarios stretch from $62,554 on the downside to $123,875 on the upside, with a typical outcome of $90,662.
The median federal student debt at completion is $18,500, $1,576 below the $20,076 peer median for comparable institutions (same type and size). If repaid over ten years, that debt corresponds to an estimated payment of $210 a month.
Earnings sit above the peer median and debt sits below it, so the two point the same way.
Parent borrowers at the university took on a median of $35,000 in Parent PLUS loans, a separate federal borrowing population. The estimated monthly student payment if repaid over ten years is $210.
Repayment figures are in the Financial GPS card below. Borrowing populations and model assumptions.
Parent loans: what can the family afford?
How Parent PLUS borrowing affects families
- Median Parent PLUS debt
- $35,000
- Estimated parent payment
- $445/mo
| Income | Risk level |
|---|---|
| $35,000 | High pressure |
| $50,000 | High pressure |
| $75,000 | High pressure |
| $100,000 | High pressure |
| $150,000 | Safe |
| $200,000 | Safe |
The model holds the parent balance fixed and varies parent income. Read the assumptions and limits.
Student and parent loans: the monthly payments
Financial GPS
What does repayment look like?
- Institution median student debt
- $18,500
- Institution Parent PLUS debt
- $35,000
Federal loans only; private or institutional loans aren’t included.
- Estimated student payment · monthly
- $210/mo
- Estimated Parent PLUS payment · monthly
- $445/mo
- Modeled student + parent payments
- $655/mo
Payments use school-wide median balances, not a specific major’s.
Student payment as a share of available income
At median graduate earnings of $90,662, with a $22,590 annual allowance for basic expenses:
3.7% of income above the allowance · Excellent
- Excellent Under 8% · selected scenario
- Good 8–under 12%
- Concerning 12–20%
- High risk Over 20%
How this estimate works
These are modeled earnings scenarios, not observed earnings percentiles. Annual student payments ÷ (earnings − basic-expense allowance). The starting allowance, $22,590, uses the published framework’s 2024 baseline; it is not a current local living-cost estimate. Change it for your budget, including taxes and other obligations. This combines school-level figures for illustration, not a typical individual’s budget or an official school rating. Parent PLUS is separate.
Payment assumptions
Payments are 10-year standard payments on the median balance, before loan fees, used as a yardstick. Rates for newly issued loans may differ, and loans made after July 1, 2026 can repay over a longer term; existing loans keep their original fixed rates.
Data & methodology
Sources and reporting periods: methodology.
Analysis and methodology by Daniel Rogers, founder of College Azimuth.
Explanatory text is AI-assisted drafting checked against those figures; it is not an additional data source.
Figure notes link to sources and limitations. About College Azimuth.
Net price and borrowing. The 2023–24 income-band averages include living costs and cover eligible first-time, full-time aid recipients; public-school figures reflect in-state tuition. They are not individual aid offers. Peer matching supplies overall net prices, not matched income-band averages. College Scorecard data and documentation.
A personal student-risk assessment also needs your major and borrowing plan; these school-level illustrations do not assign you a personal risk zone.
Payments are 10-year standard payments on the median balance, before loan fees, used as a yardstick. Rates for newly issued loans may differ, and loans made after July 1, 2026 can repay over a longer term; existing loans keep their original fixed rates. Private-loan figures from the Common Data Set are separate from these federal repayment illustrations.