How Much to Save for College Per Month

Start with the target, then work backward to a monthly number

The question "how much should I save a month for college" has no single answer until a target exists. A monthly number is only the last step of a short chain: pick the type of school, attach a realistic total cost, subtract what you already have, then divide by the months remaining and the growth your savings will earn. Skip the first two steps and the monthly figure is a guess; do all four and it is a plan.

The anchor for the target is the College Board's annual pricing report. For 2025-26, average published tuition and fees are $11,950 for in-state students at public four-year colleges and $4,150 at public two-year colleges. Tuition alone, though, is not the number to save toward: students also pay for housing, food, books, transport and personal costs. The College Board's full student budgets for 2024-25 averaged $29,910 a year for in-state students at public four-year schools, of which tuition and fees were less than half; housing and food alone averaged $13,310. These are averages, which is worth repeating: state averages for tuition run from $6,360 (Florida) to $18,090 (Vermont) in 2025-26, and the school your child attends can sit far from the middle.

Once a yearly figure is chosen, multiply by four and the target is real. At the average public in-state budget, 4 x 29,910 = $119,640. Families who plan for a four-year degree at a private nonprofit college face a 2024-25 average budget of $62,990 a year, so the same four years run past a quarter of a million dollars. Most families target a share of the total, expecting scholarships, work and current income to cover the rest, and that share becomes the goal the calculator needs.

A worked example: 100000 in 18 years

Take a family with a newborn, a $100,000 goal, $5,000 already in the account, and an expected 5 percent annual return, which is a moderate assumption for a mix tilted toward stocks early on. Eighteen years is 216 months of compounding. The $5,000 already saved grows to $12,275.04 over that stretch, which leaves $100,000 - $12,275.04 = $87,724.96 for the monthly contributions to cover. Dividing that remaining amount by the future-value factor for 216 months at 5 percent, 87,724.96 / 349.20 = $251.22 a month.

It is worth seeing what the family pays in. Each of the 216 payments is $251.22, so out of pocket the contributions total 251.22 x 216 = $54,263.52. The remaining $45,000-plus of the goal is growth, the part compounding does while everyone sleeps. Over 18 years, time in the market contributes nearly half the target, which is the entire argument for starting early.

The same goal with the same $5,000 start but a 0 percent return, as in a mattress or a checking account, needs $439.81 a month. At 3 percent it needs $319.74. Growth assumptions matter less than the start date, but they matter, and they are the second lever the calculator exposes.

Why starting earlier costs less every month

Compound growth is not linear in time, so delaying does not raise the monthly need in proportion; it raises it much faster. The table holds the goal constant at $100,000 with $5,000 already saved and a 5 percent return, and only moves the start date.

Waiting from birth to age 10 cuts the growth window from 18 years to 8, and the monthly cost jumps from $251.22 to $786.03, a bit more than triple for a bit less than half the time. Starting at age 14 costs 1,771.12 / 251.22 = about 7 times as much per month as starting at birth. The pattern is the practical meaning of compounding: every year of delay raises the monthly figure by less than the year before it sounds, until suddenly the last few years barely respond to contributions at all and are funded almost entirely by cash.

Late starts still have options, just different ones. A family starting at age 14 usually splits the problem three ways: a smaller target (covering part of the cost), aggressive monthly saving, and the expectation that the child's aid, merit scholarships and earnings will carry the remainder. That is a legitimate plan; it just has to be chosen deliberately rather than discovered at the mailbox with the acceptance letter.

College prices rise faster than most family budgets

Any long-horizon plan has to assume the target moves. Over the decade from 1995-96 to 2005-06, average published in-state tuition at public four-year colleges rose $3,110, a 52 percent jump, and the following decade added another 42 percent. Recent years have cooled dramatically: the 2025-26 in-state increase was 2.9 percent before inflation, and after adjusting for inflation the College Board found published public tuition lower than in 2019-20. But family budget planning cannot count on a decade of favorable inflation, because the long-run trend still points up and the years you happen to get are not chosen in advance.

The planning habit that survives this uncertainty is to grow the target with a college-inflation assumption rather than the consumer price index. A common planning figure is 4 to 5 percent annual college cost growth, higher than general inflation most years, which means a $100,000 target for a newborn is not $100,000 in 2044 dollars but more like $200,000. The monthly figure that funds the inflated target scales with it. Families who cannot fund the full inflated number should still fund the monthly figure for a chosen share of it; partial coverage of a real target beats full coverage of an imaginary one.

Sticker price is not what most families pay

Published prices are the ceiling, not the bill. After grant aid and scholarships, the College Board estimates the average net tuition and fees paid by first-time full-time in-state students at public four-year colleges was about $2,480 in 2024-25, a fraction of the $11,610 sticker. The net cost of attendance, which includes housing, food, books and transport, averaged $21,340 for those students in 2025-26 against a published budget near $30,000.

This does not mean the savings target should be cut to the net number, because net price is a population average that hides individual outcomes. It depends on family income, the specific school's aid policy, merit offers and the FAFSA, and no family knows their number until the aid letters arrive a few months before enrollment. What the net-price data does justify is targeting a share of the total cost. A common and defensible plan is to save for one third to one half of the projected budget, let current income carry the ongoing bills during the college years, and let aid and scholarships cover the rest where they land.

The federal side of that aid starts with the FAFSA at studentaid.gov, and aid eligibility is recalculated every year, so a family's position can improve as earlier children leave the household or income changes.

Where to put the money: the 529 account

For most US families the default vehicle is the 529 plan, a state-sponsored savings account whose earnings grow untaxed and come out untaxed when spent on qualified education costs, including tuition, fees, housing, food, books and required equipment. Contribution limits are high (well above any monthly figure on this page), and many states add a state income tax deduction for contributions. The IRS explains the rules in Publication 970; this page is not tax advice, and the state deduction details vary enough to be worth checking before the first deposit.

Two 529 features fit the saving timeline especially well. First, the investment menu shifts automatically: plans offer age-based portfolios that start stock-heavy when the child is small and glide toward cash and bonds as enrollment nears, which matches the risk profile the timeline demands. Second, unused funds are more flexible than their reputation: the beneficiary can be changed to a sibling, rolled up to $35,000 into the beneficiary's Roth IRA over a lifetime under current rules, or held for graduate school.

Plain taxable savings and custodial accounts remain legitimate alternatives, particularly for families who may need the money for non-education purposes, but they give up the tax-free growth that compounds most when the timeline is long.

If college is 5 years away or less

Short timelines change the math and the tactics. With 5 or fewer years, growth contributes little no matter what you invest in, so the plan becomes mostly arithmetic: divide the remaining target by the months left. A $60,000 gap with 5 years to go needs about $1,000 a month at zero growth and still over $900 with 5 percent returns. That monthly figure is often larger than the household can absorb, which is normal at this stage, and the honest response is to shrink the target rather than to gamble on higher-return investments.

Risking a short-horizon fund in stocks is the classic error here. A 20 percent market drop two years before enrollment is not a paper loss that recovers; it is a loss taken at the moment of withdrawal. Money needed within about 3 years belongs in savings accounts, CDs or short-term bonds, where returns are small but the balance on day one is guaranteed.

The rest of the late-stage playbook is outside the investment account: in-state public options, starting at a community college for two years, merit-based school selection, and the aid process itself. Families 5 years out should file the FAFSA on time every year, since some aid is first-come, and treat school selection as the largest single cost lever available, worth more than any portfolio decision on this page.