College Savings Calculator
Find the future value of college savings from a starting amount, monthly additions, rate, and years.
What it does
College savings grow through contributions and investment returns over the years before tuition is due. Starting early lets compound growth do more of the work.
The tool above compounds a starting amount plus monthly additions at a fixed annual rate. It shows the future value, total contributions, and interest earned. Enter your numbers and read the result.
Monthly additions are assumed to be made at the end of each month. Real accounts vary with fees, taxes, and market returns, so treat this as a projection, not a promise.
College costs rise over time, so compare the future value against an estimated cost of attendance, not today's sticker price.
How to use
- Enter the amount already saved, if any.
- Enter the monthly addition you plan to make.
- Enter the expected annual rate of return as a percent.
- Enter the years until college starts.
- Enter how often interest compounds per year, usually 12.
- Read future value first, then contributions and interest earned.
Formula
- starting amount
- College savings already set aside, in dollars.
- monthly addition
- Amount added to the savings each month, in dollars.
- annual rate
- Expected annual rate of return, in percent.
- years
- Years until college starts.
- frequency
- Compounding times per year, often 12.
Monthly additions are assumed at month end. At a zero rate, future value is simply the start plus additions with no interest.
Worked example
Example: $1,000 start, $100 monthly, 5% per year, 18 years
Starting amount 1,000, monthly addition 100, annual rate 5 percent, years 18, compounding 12 times per year.
- Months: 18 x 12 = 216 months.
- Effective monthly rate is about 0.42 percent.
- Start of 1,000 compounds to about 2,461.32.
- Additions of 100 a month compound to about 34,913.89.
- Future value: about 37,375.21. Contributions total 22,600.00 and interest earned is 14,775.21.
- Tool shows future value $37,375.21, contributions $22,600.00, interest earned $14,775.21.
Reference table
| Years | Future value | Contributions | Interest earned |
|---|---|---|---|
| 5 | $8,083.97 | $7,000.00 | $1,083.97 |
| 10 | $17,175.24 | $13,000.00 | $4,175.24 |
| 15 | $28,842.60 | $19,000.00 | $9,842.60 |
| 18 | $37,375.21 | $22,600.00 | $14,775.21 |
Limits
- Results assume a fixed rate and fixed monthly addition with no fees or taxes.
- Investment returns can vary and may be negative in some years.
- Tuition inflation means future dollars buy less college than today's dollars.
- Financial aid, scholarships, and grants are outside this math.
Common mistakes
- Treating a projection as a guaranteed college fund.
- Ignoring fees, taxes, and investment risk that reduce real returns.
- Comparing future value to today's tuition without adjusting for inflation.
- Assuming the rate stays fixed for all 18 years.
- Forgetting that 529 plans and other accounts have their own rules and limits.
Try it yourself
Quick checks. Answers sit tucked under each question.
$0 start, $100 monthly, 5%, 10 years?
Future value $15,528.23, contributions $12,000.00, interest $3,528.23.
$5,000 start, $200 monthly, 6%, 10 years?
Future value $41,872.85, contributions $29,000.00, interest $12,872.85.
$2,000 start, $50 monthly, 4%, 5 years?
Future value $5,756.94, contributions $5,000.00, interest $756.94.
Questions
What is a college savings calculator?
It projects how much savings will grow by the time college starts.
Does this include financial aid?
No. It projects savings growth only; aid and scholarships are separate.
Are monthly additions at month end?
Yes, which is the common convention for this model.
What rate should I use?
Use your expected investment return. Conservative estimates reduce disappointment.
Is this for a 529 plan?
It can model a 529 or similar account, but each plan has its own rules and fees.
Does it account for tuition inflation?
No. Compare the result to an inflated future cost of attendance.
Sources
- Federal Student Aid: U.S. Department of Education
- U.S. Securities and Exchange Commission: Investor.gov