College Savings Calculator: Goal & Monthly Contributions

Plan a college savings target for the start of studies. Compare your current savings and planned monthly contributions with a funding goal you choose, using an optional assumed return.

Estimate your college savings at enrollment

Enter the amount you want available when college begins, in future US dollars. This tool does not estimate tuition, inflation, aid, or taxes. Choose your own return assumption; 0% provides a no-growth comparison.

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For worked examples, read our guide to calculating college savings and monthly contributions.

How to calculate college savings

For zero growth, add your current savings to monthly contribution x number of months. For example, $12,000 saved now plus $300 each month for 10 years gives $48,000. Against a $60,000 target, the shortfall is $12,000. Reaching that goal at 0% requires $400 per month in total.

How the growth assumption works

The monthly rate i is (1 + annual return)^(1/12) - 1, with the annual return expressed as a decimal. For N months, projected savings equal current savings x (1 + i)^N + monthly contribution x ((1 + i)^N - 1) / i. At zero return, the contribution factor is N.

The calculator solves the same equation for the total required monthly contribution, then rounds that contribution up to a whole cent. It assumes a constant effective annual return converted to equivalent monthly growth. It does not use a nominal annual rate divided by 12, and it does not model an actual investment's changing returns.

Choose a future-dollar target

Use your own estimate of the funds you want available at enrollment. Today's tuition is not automatically the future cost of attendance. Consider which costs you plan to cover and any aid or other funding, without counting the same money twice.

The model stops when college starts and treats the target as a balance needed then. It does not simulate annual tuition withdrawals or returns during college. A multi-year spending plan needs a separate cash-flow model.

Frequently asked questions

Does this model a 529 plan?

No. It is a general savings projection. It does not calculate 529 tax benefits, state deductions, contribution limits, qualified expenses, penalties, or financial-aid effects.

What return should I use?

The choice is an assumption, not a recommendation from this tool. Compare scenarios, including 0%, and remember that investments may lose money. A constant return omits volatility and the order of actual returns.

Is the required monthly contribution extra?

No. It replaces the planned monthly amount in the scenario; do not add the two figures together. The requirement accounts for current savings and the same assumed return.

What input limits apply?

The goal must be positive and no more than $100 million. Current savings can be zero to $100 million. Monthly contributions can be zero to $1 million. Money inputs accept two decimal places. The horizon must be a whole number from 1 to 40 years, and assumed effective annual return can be 0% to 20% with four decimal places. These are calculation limits, not expected returns.

For a simple goal per payday without growth, use our Savings Calculator. To model one starting deposit without later contributions, use the Compound Interest Calculator.