Public vs Private College: 4-Year Cost Compared (2026)

What does public wins by $72,200 mean?

It means that, on the defaults, a four-year degree costs $27,800 at a public college and $100,000 at a private one — the same degree, the same four years, $72,200 apart. The public net is $6,950 a year after $5,000 of grants, and the private net is $25,000 a year after $20,000 of grants: the private college grants four times as much, but its sticker price is nearly four times higher, so the grant does not close the gap. Borrowed in full over ten years at 6.39%, the public degree costs $314.11 a month and the private degree $1,129.89 a month — $9,893.16 of interest against $35,586.91. The four-year totals and the loan payments are two different answers, never the same number: the totals are the sticker price after grants, and the loan is what the totals cost when you borrow them in full.

Three things to check before you trust the number

Compare net price, not sticker price. A private college at $45,000 a year with $20,000 of grants costs $25,000 a year — more than a public college at $11,950 with $5,000 of grants, which costs $6,950 a year. The grant matters, but the net price is the number you actually pay.

The loan costs more than the degree. Borrowing the full public total of $27,800 costs $37,693.16 over ten years — $9,893.16 of interest — and borrowing the full private total of $100,000 costs $135,586.91 — $35,586.91 of interest. The gap grows from $72,200 to $97,893.75 once interest is counted.

Grants are not guaranteed forever. The calculator takes the grants you enter every year, for every year of the degree. If a grant is only for the first year, or needs a GPA to keep, enter the average across all four years instead of the first year alone.

Worked example

On the defaults: public tuition $11,950 a year, $5,000 of grants; private tuition $45,000 a year, $20,000 of grants; four years; 6.39%.

1. Public net a year: $11,950 − $5,000 = $6,950.
2. Private net a year: $45,000 − $20,000 = $25,000.
3. Public total: $6,950 × 4 = $27,800 (unrounded 27800.000000).
4. Private total: $25,000 × 4 = $100,000.
5. Gap: $100,000 − $27,800 = $72,200.
6. Public monthly payment: $27,800 over 10 years at 6.39% is $314.11 a month (unrounded 314.109673), $37,693.16 repaid, $9,893.16 of interest.
7. Private monthly payment: $100,000 over 10 years at 6.39% is $1,129.89 a month (unrounded 1129.890909), $135,586.91 repaid, $35,586.91 of interest.
8. Smallest private grants for the private total to be no more than the public total: $38,500 — at $38,500 the private total is $26,000 and private wins by $1,800, and at $38,000 it is $28,000 and public wins by $200.
9. Largest public tuition for the public total to be no more than the private total: $30,000 — at $30,000 both totals are $100,000, a Tie, and at $30,100 the public total is $100,400.

Every branch, checked

• Two years: Two years: Public $13,900.00; private $50,000.00; Public wins by $36,100.00. Two years — public $13,900.00, private $50,000.00, gap $36,100.00.
• Six years: Six years: Public $41,700.00; private $150,000.00; Public wins by $108,300.00. Six years — public $41,700.00, private $150,000.00, gap $108,300.00.
• Public tuition $9,000: Public tuition $9,000: Public $16,000.00; private $100,000.00; Public wins by $84,000.00. Public tuition $9,000 — public net $4,000.00 a year, $16,000.00 over four years, gap $84,000.00.
• Private grants $30,000: Private grants $30,000: Public $27,800.00; private $60,000.00; Public wins by $32,200.00. Private grants $30,000 — private net $15,000.00 a year, $60,000.00 over four years, gap $32,200.00.
• Private tuition $30,000: Private tuition $30,000: Public $27,800.00; private $40,000.00; Public wins by $12,200.00. Private tuition $30,000 — private net $10,000.00 a year, $40,000.00 over four years, gap $12,200.00.
• No public grants: No public grants: Public $47,800.00; private $100,000.00; Public wins by $52,200.00. No public grants — public net $11,950.00 a year, $47,800.00 over four years, gap $52,200.00.
• A 0% loan rate: A 0% loan rate: Public $27,800.00; private $100,000.00; Public wins by $72,200.00. A 0% loan rate — the same totals, $231.67 a month public and $833.33 private, no interest at all.
• An 8% loan rate: An 8% loan rate: Public $27,800.00; private $100,000.00; Public wins by $72,200.00. An 8% loan rate — the same totals, $337.29 a month public and $1,213.28 private.
• Private grants $38,050: Private grants $38,050: Public $27,800.00; private $27,800.00; Tie. Private grants $38,050 — private net $6,950.00 a year, both totals $27,800.00, a Tie.
• Fractional inputs: Fractional inputs: Public $27,309.00; private $100,601.00; Public wins by $73,292.00. Fractional inputs — public $27,309.00, private $100,601.00, gap $73,292.00.

The reverses, worked backwards

• Smallest private grants for the private total to be no more than the public total: $38,500 — at $38,500 the figures are Public $27,800.00 (unrounded 27800.000000); private $26,000.00 (unrounded 26000.000000); Private wins by $1,800.00 (unrounded 1800.000000); at the lower neighbor the figures are Public $27,800.00 (unrounded 27800.000000); private $28,000.00 (unrounded 28000.000000); Public wins by $200.00 (unrounded 200.000000); at the upper neighbor the figures are Public $27,800.00 (unrounded 27800.000000); private $24,000.00 (unrounded 24000.000000); Private wins by $3,800.00 (unrounded 3800.000000) — verdict: STEP.
• Largest public tuition for the public total to be no more than the private total: $30,000 — at $30,000 the figures are Public $100,000.00 (unrounded 100000.000000); private $100,000.00 (unrounded 100000.000000); Tie; at the upper neighbor the figures are Public $100,400.00 (unrounded 100400.000000); private $100,000.00 (unrounded 100000.000000); Private wins by $400.00 (unrounded 400.000000); at the lower neighbor the figures are Public $99,600.00 (unrounded 99600.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $400.00 (unrounded 400.000000) — verdict: STEP.
• Smallest years for the gap to REACH at least $50,000: 3 years — at 3 years the figures are Public $20,850.00 (unrounded 20850.000000); private $75,000.00 (unrounded 75000.000000); Public wins by $54,150.00 (unrounded 54150.000000); at the lower neighbor the figures are Public $13,900.00 (unrounded 13900.000000); private $50,000.00 (unrounded 50000.000000); Public wins by $36,100.00 (unrounded 36100.000000); at the upper neighbor the figures are Public $27,800.00 (unrounded 27800.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $72,200.00 (unrounded 72200.000000) — verdict: STEP.
• Smallest public grants for the public total to be no more than $25,000: $5,700 — at $5,700 the figures are Public $25,000.00 (unrounded 25000.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $75,000.00 (unrounded 75000.000000); at the lower neighbor the figures are Public $25,400.00 (unrounded 25400.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $74,600.00 (unrounded 74600.000000); at the upper neighbor the figures are Public $24,600.00 (unrounded 24600.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $75,400.00 (unrounded 75400.000000) — verdict: STEP.
• Largest loan rate for the public monthly payment to STAY at or below $350: 8.75% — at 8.75% the figures are Public $27,800.00 (unrounded 27800.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $72,200.00 (unrounded 72200.000000); at the upper neighbor the figures are Public $27,800.00 (unrounded 27800.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $72,200.00 (unrounded 72200.000000); at the lower neighbor the figures are Public $27,800.00 (unrounded 27800.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $72,200.00 (unrounded 72200.000000) — verdict: STEP.
• Largest years for the gap to STAY at or below $100,000: 5 years — at 5 years the figures are Public $34,750.00 (unrounded 34750.000000); private $125,000.00 (unrounded 125000.000000); Public wins by $90,250.00 (unrounded 90250.000000); at the upper neighbor the figures are Public $41,700.00 (unrounded 41700.000000); private $150,000.00 (unrounded 150000.000000); Public wins by $108,300.00 (unrounded 108300.000000); at the lower neighbor the figures are Public $27,800.00 (unrounded 27800.000000); private $100,000.00 (unrounded 100000.000000); Public wins by $72,200.00 (unrounded 72200.000000) — verdict: STEP.

What the defaults assume

The defaults are the College Board’s 2025-26 published tuition and fees — public four-year in-state $11,950 a year, private nonprofit four-year $45,000 a year — from Trends in College Pricing 2025, Table CP-1, with $5,000 of public grants and $20,000 of private grants a year, four years, and the 2025-26 federal undergraduate Direct Loan rate of 6.39%. They are a starting point, not a benchmark: your colleges may cost more or less, your grants may be larger, and your degree may take five years. Change the six numbers to your own and the calculator recomputes instantly. Compare net price, not sticker price — and remember that the loan costs more than the degree.

These notes repeat in every explainer section because this page is built to be read start to finish: the defaults are national averages, not your colleges; compare net price, not sticker price; the loan costs more than the degree; and grants are not guaranteed forever.

Output · formula · meaning

Who uses this

• A high-school senior choosing between a state university and a private college — the public degree costs $27,800 and the private one $100,000, so the question is whether the private college is worth $72,200 more.
• A parent planning for two children — the gap doubles to $144,400, and the loan interest doubles with it.
• A student weighing a private college’s grant — $38,500 a year of grants is what it takes for the private total to catch the public one.
• A graduate working out the monthly payment — $314.11 a month for the public degree, $1,129.89 for the private one, over ten years.

Accuracy & limitations

The calculator does the arithmetic exactly — the net cost a year is tuition minus grants, never below zero, the four-year total is the net cost times the years, and the loan is the standard ten-year amortisation at the rate you enter — and every figure on this page is checked against an independent model. What it cannot do is know your colleges: the defaults are national averages from the College Board, and your public college may charge out-of-state tuition, your private college may grant more, and room, board and books are not counted here at all. It also takes one loan at one rate — a mix of federal and private loans needs the student-loan-calculator page for each loan, and saving in advance needs the college-savings-calculator page. And the public monthly payment is $314.11, unrounded 314.109673 — the page prints the unrounded figure so the rounding does not mislead you.

Cite this calculator

The four-year total is the net cost a year — tuition minus grants, never below zero — times the years. On the defaults — public $11,950 a year with $5,000 of grants, private $45,000 a year with $20,000 of grants, four years, 6.39% — public costs $27,800 and private costs $100,000, so public wins by $72,200. Smallest private grants for the private total to be no more than the public total: $38,500. Largest public tuition for the public total to be no more than the private total: $30,000. Smallest years for the gap to reach at least $50,000: 3. Smallest public grants for the public total to be no more than $25,000: $5,700. Largest loan rate for the public monthly payment to stay at or below $350: 8.75%. Largest years for the gap to stay at or below $100,000: 5. Sources: College Board, Trends in College Pricing 2025, Table CP-1 (2025-26 published tuition and fees); federal undergraduate Direct Loan rate 2025-26, 6.39%. Bright Side Kit, brightoolbox.com.

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