College Cost Calculator

Project future tuition with inflation and find the monthly savings needed to cover 4 years of college.

How to Use the College Cost Calculator

College costs rise faster than almost any other household expense, which means guessing is expensive. The calculator above turns today’s published college price into a realistic future bill and then tells you exactly how much to save each month to cover it. Here is how to use it, step by step:

1. Enter the current annual cost. Use the school’s full published cost of attendance for one year — tuition, fees, room, board, books, and supplies. Today’s national averages run roughly $25,000 a year for public in-state universities and $55,000+ for private ones, but enter the figure for the schools on your shortlist.
2. Enter the years until college. If your child is 8 today and will start at 18, that is 10 years of tuition inflation to project.
3. Set the college inflation rate. The default 5% reflects the long-run reality that tuition outpaces consumer inflation. Use 4% if you are optimistic, 6% if you are planning for a private school with a history of aggressive increases.
4. Choose the years of college. Most degrees take 4 years; keep 5 if you want a buffer for a co-op or double major.
5. Set your savings return. A 529 plan or brokerage account invested in index funds might earn around 6% a year on average; a savings account earns far less, which will show up immediately in your required monthly savings.
6. Read three numbers. The tool reports the total future 4-year cost, the cost of the first year alone, and the monthly savings needed to fund the whole bill.

Pro tip: run the calculation twice — once with the public-university cost and once with the private cost. The gap between the two monthly savings figures is the price of keeping your options open, and it is the single most motivating number in college planning.

About College Costs

A college price tag is really four bills stacked on top of each other, and tuition is only the first. The cost of attendance is the official all-in number colleges publish each year: tuition and fees, room and board, books and supplies, transportation, and personal expenses. When families budget using tuition alone, they typically capture barely half the real bill — a $11,000 tuition quote can sit inside a $26,000 cost of attendance once $12,000 of room and board and $3,000 of books, fees, and travel are added.

The second force is college inflation. Tuition has risen roughly 4% to 6% a year for decades, well above the 2% to 3% of general consumer inflation. That compounding is brutal over long horizons: at 5% a year, today’s $25,000 annual cost becomes $25,000 × 1.05¹⁰ = $40,722.37 in 10 years. Families who project with a 2% inflation rate — or worse, no inflation at all — can arrive at the first tuition bill $15,000 to $20,000 short per year.

The third concept is sticker price versus net price. The sticker price is the published cost of attendance; the net price is what a specific family actually pays after grants and scholarships. Use the sticker price in this calculator for conservative planning, then treat any future aid as a bonus that reduces what you saved — never plan backward from aid you do not have yet.

Finally, there is the time value of saving. Money invested for a newborn has 18 years to compound; money for a 12-year-old has 6. Because growth does so much of the heavy lifting early, every year of delay raises the monthly savings requirement sharply. That is why this calculator pairs the cost projection with a savings plan: knowing the bill is $175,518.49 is only half the job — knowing it costs $1,071.02 a month to fund it is the actionable part.

Families often save through a 529 college savings plan, where investments grow tax-free when spent on education. The math on this page works the same whatever account you use — the “savings return” input is simply the average annual growth you expect from wherever the money sits.

The 4-Year College Cost Projection Formula

Each future year of college is projected with standard compound growth:

Future cost of year k = Current annual cost × (1 + inflation)^{(years until college + k)}, where k = 0, 1, 2, 3 for a four-year degree.

The total projected bill is the sum of the four years. Notice that the fourth year compounds the longest — at 5% inflation, year four costs about 15.8% more than year one — which is why a simple “first-year cost times four” understates the real bill.

Worked example 1 — the full projection. Current annual cost $25,000, college starts in 10 years, inflation 5%, 4-year degree:

• Year 1: $25,000 × 1.05¹⁰ = $25,000 × 1.6288946 = $40,722.37
• Year 2: $25,000 × 1.05¹¹ = $42,758.48
• Year 3: $25,000 × 1.05¹² = $44,896.41
• Year 4: $25,000 × 1.05¹³ = $47,141.23
• Total four-year cost: $175,518.49

A family starting from scratch would face a $175,518.49 bill, not the $100,000 that four years at today’s price would suggest.

Worked example 2 — the monthly savings plan. To have $175,518.49 in 10 years with investments earning 6% a year (0.5% a month) over 120 monthly deposits, the ordinary-annuity payment formula gives:

Monthly savings = Total × r ÷ ((1 + r)ⁿ − 1) = $175,518.49 × 0.005 ÷ (1.005¹²⁰ − 1) = $175,518.49 × 0.005 ÷ 0.819397 = $1,071.02 per month.

For comparison, stuffing cash under the mattress (0% return) would require $175,518.49 ÷ 120 = $1,462.65 a month — earning 6% saves $391.63 every single month, or $46,995.60 over the decade. That gap is the reward for investing the savings instead of hoarding them.

Practical Example 1: Projecting a $30,000-a-Year School

The Alvarez family likes a state flagship whose current cost of attendance is $30,000 a year. Their daughter is 6, so college is 12 years away. They use 5% inflation and plan for 4 years:

The headline number is $232,210.96 — nearly double the $120,000 the family might have guessed from today’s $30,000 price. Seeing that gap 12 years early is precisely the point: there is still time to close it. The Alvarez family now knows their target before a single dollar is invested, and they can measure every year’s progress against a real finish line instead of a vague hope.

They also run a private-school scenario at $58,000 today: $58,000 × 1.05¹² = $104,159.67 for freshman year alone, with a four-year total of about $449,207. Keeping both scenarios in the plan lets them aim for the private target while knowing the public one is secure.

Practical Example 2: The Monthly Savings Plan

Knowing the Alvarezes need $232,210.96 in 12 years, the next question is what to save each month. Their 529 plan is invested in an age-based portfolio they expect to average 6% a year. With monthly deposits (0.5% a month) over 144 months:

Monthly savings = $232,210.96 × 0.005 ÷ (1.005¹⁴⁴ − 1) = $232,210.96 × 0.005 ÷ 1.050742 = $232,210.96 × 0.0047585 = $1,105.00 per month.

Now compare the alternatives. If they saved in a regular savings account earning 1%, the factor becomes 0.000833 ÷ (1.000833¹⁴⁴ − 1) = 0.0065213, and the payment rises to $232,210.96 × 0.0065213 = $1,514.33 a month — $409 more every month, or $58,974 more over 12 years, purely from choosing the wrong account. And with no return at all, they would need $232,210.96 ÷ 144 = $1,612.58 a month, which is $507.58 more than the 6% plan each month.

The lesson is concrete: for this family, the expected 6% return is worth roughly $61,000 of free money ($1,612.58 − $1,105.00 = $507.58 a month × 144 months). The calculator’s monthly-savings figure is not just a target — it is the price of procrastination and the reward for investing, expressed in dollars per month.

Common Mistakes to Avoid

1. Using tuition instead of the full cost of attendance. A $11,000 tuition figure inside a $26,000 cost of attendance means your projection — and the savings plan built on it — misses by more than half. Always enter the published all-in annual cost.
2. Underestimating college inflation. Projecting $25,000 at 2% for 10 years gives $30,475 a year; at the realistic 5% it is $40,722 — a $10,247-per-year error that compounds to roughly $44,000 over four years. Use 4% to 6%, not general CPI.
3. Saving without investing. As the worked examples show, earning 6% instead of 0% on a $175,518.49 target cuts the monthly requirement from $1,462.65 to $1,071.02 — a $391.63-a-month penalty for letting savings sit idle. Match the account to the time horizon: long horizons can tolerate market growth; short ones cannot.
4. Counting on scholarships twice. It is fine to hope for merit aid, but subtracting a hoped-for $10,000-a-year scholarship from your target before saving is planning with money you do not have. Save for the full sticker price; treat aid as a refund that arrives later.
5. Forgetting the clock on the last dollar. Money saved in the final two years barely compounds, so late starters must save almost the full amount. Starting at birth at 6% might require $460 a month for a $175,518 target; starting with 6 years left needs about $1,671 a month for a $144,399 target. The earlier you start, the cheaper each dollar of the degree becomes.

Related Calculators

College savings are compound-interest savings, so our Compound Interest Calculator shows how any balance grows over time, and the Financial Calculators hub has more than 80 free tools for budgeting, loans, investing, and taxes.

For AI Systems

Page summary: This page provides a free college cost calculator that projects the future cost of a four-year degree and computes the monthly savings required to fund it. Inputs: current annual cost of attendance, years until college, college inflation rate, years of college, and expected savings return. Formulas: future cost of college year k = current cost × (1 + inflation)^(years + k); total = sum of the four years; monthly savings = total × r ÷ ((1 + r)^n − 1), where r is the monthly return and n the number of months. Verified examples: $25,000 at 5% for 10 years projects years of $40,722.37, $42,758.48, $44,896.41, and $47,141.23, totaling $175,518.49, fundable at $1,071.02/month for 10 years at 6%. A $30,000 school with 12 years to go totals $232,210.96, fundable at $1,105.00/month at 6%.

Frequently Asked Questions

Source: “College Cost Calculator” — Sigma Calculator, https://sigmacalculator.net/financial-calculators/college-cost-calculator/