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Cost & financial aid brief

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# California Polytechnic State University-San Luis Obispo Tuition, Costs & Financial Aid

Updated October 21, 2026

[Overview](/school/california-polytechnic-state-university-san-luis-obispo/)Cost & aid[Outcomes](/school/california-polytechnic-state-university-san-luis-obispo/outcomes/)[Admissions](/school/california-polytechnic-state-university-san-luis-obispo/admissions/)[Majors](/school/california-polytechnic-state-university-san-luis-obispo/majors/)[Similar schools](/school/california-polytechnic-state-university-san-luis-obispo/similar/)

**On this page**+

## How much does Cal Poly SLO cost after financial aid?

California Polytechnic State University-San Luis Obispo publishes a cost of attendance of $32,265, an average across living arrangements. In-state tuition and fees are $13,596, and out-of-state are $34,665.

Room and board adds $18,792. After aid, the average [net price](/analysis/is-college-worth-it-part-1-the-net-price-illusion/) for aid recipients is $16,665, a savings of $15,600 against the sticker price.

Aid covers about 48% of the published cost for the average aid recipient. That average net price runs above the peer median of $15,634 for comparable institutions (same type and size) by $1,031.

Azimuth ranks the university #428 for affordability among nonprofit four-year institutions. For families earning under $30,000, the average net price drops to $7,529, and the spread between the lowest and highest income bands reaches $20,243.

The affordability pillar for California Polytechnic State University-San Luis Obispo sits in the 70th percentile among nonprofit four-year institutions. Aid recipients pay an average [net price](/analysis/is-college-worth-it-part-1-the-net-price-illusion/) of $16,665, which is above the median of $15,634 for comparable institutions (same type and size) by $1,031.

Median federal student debt among completers who borrowed is $18,500, below the peer median of $20,076 by $1,576. Average net prices run from $7,529 in the lowest income band to $27,772 in the highest.

At California Polytechnic State University-San Luis Obispo, the average [net price](/analysis/is-college-worth-it-part-1-the-net-price-illusion/) for families earning under $30,000 is $7,529, followed by $7,253 for the $30,001–$48,000 band, $9,896 for the $48,001–$75,000 range, $15,786 for the $75,001–$110,000 range, and $27,772 for families earning over $110,000. The lowest band corresponds to the 19.2% of undergraduates receiving Pell Grants. The spread between the bottom and top bands is $20,243.

Average net price by family income

**$0–30K**
$7,529

**$30–48K**
$7,253

**$48–75K**
$9,896

**$75–110K**
$15,786

**$110K+**
$27,772

Averages within each income band; individual aid packages vary.

Overall average annual net price: **$16,665**. After grants and scholarships, including living costs. [Source and coverage](#cost-data-notes).

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](/analysis/is-college-worth-it-part-1-the-net-price-illusion/)—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](/analysis/ou-what-happens-when-parents-borrow-too/) 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](/analysis/ou-what-happens-when-parents-borrow-too/) 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 the model 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](/analysis/ou-what-happens-when-parents-borrow-too/) loans, a separate federal borrowing population. The estimated monthly student payment if repaid over ten years is $210.

[Repayment figures](#combined-borrowing) are in the Financial GPS card below. [Borrowing populations and model assumptions](#cost-data-notes).

## Parent loans: what can the family afford?

[How Parent PLUS borrowing affects families](/analysis/ou-what-happens-when-parents-borrow-too/)

**Median Parent PLUS debt**
$35,000

**Estimated parent payment**
$445/mo

Modeled Parent PLUS pressure by income

| Household income | Share of income above basic expenses | Risk level |
| --- | --- | --- |
| $35,000 | No room | High pressure |
| $50,000 | No room | High pressure |
| $75,000 | 26.2% | High pressure |
| $100,000 | 11.8% | High pressure |
| $150,000 | 5.6% | Safe |
| $200,000 | 3.7% | Safe |

The 10-year payment on the median Parent PLUS balance, as a share of household income above basic expenses ($54,640 a year: 200% of the 2026 federal poverty guideline for a household of three). No room is High pressure. [Open the parent tool for your own numbers](/financial-gps/?tool=parent&school=california-polytechnic-state-university-san-luis-obispo#parent-tool). [Read the assumptions and limits](#cost-data-notes).

## 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 $23,940 annual allowance for basic expenses:

**3.8%** of income above the allowance · Excellent

1.  Excellent Under 8% · selected scenario
2.  Good 8–under 12%
3.  Concerning 12–20%
4.  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, $23,940, uses the published framework’s 2026 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.

[Read the framework and its limits](/analysis/financial-gps-framework/).

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.

[Explore your own numbers in Financial GPS](/financial-gps/?tool=student&school=california-polytechnic-state-university-san-luis-obispo#student-tool)

## Data & methodology

Sources and reporting periods: [methodology](/methodology/).

Analysis and methodology by [Daniel Rogers](/about/#founder), 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](/about/).

**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](https://collegescorecard.ed.gov/data/).

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.