Should I stop contributing to my 529?
There is no single right answer — it depends on how much you have, how long you have, and what school you are planning for. Enter your numbers and compare the four paths side by side.
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Fill in your situation above, then press Run the numbers to see your four paths.
What this question actually turns on
Stopping, reducing, continuing or increasing are not four opinions — they are four arithmetic outcomes, and which one suits you depends on three things the form asks for: how much is already invested, how many years remain before the money is needed, and how much of the bill you are trying to cover.
Time is the variable that does the most work. A balance with fifteen years ahead of it is doing far more of the lifting than any monthly contribution can, because compounding acts on the whole balance while contributions arrive one month at a time. The same balance with three years left is nearly finished growing, and at that point contributions are close to the only lever you have.
That is why the honest answer flips with the horizon. Early on, stopping costs comparatively little, because the existing balance keeps working. Late on, stopping costs almost exactly what you stop paying in, because there is not enough time left for growth to make up the difference.
Reading the four paths
The projection carries each path to the first day of college and shows what it produces. The gap between “stop” and “continue” is the real cost of stopping. The gap between “continue” and “increase” is what additional money would buy you.
Neither gap is a verdict. A projection that falls short of the full cost is not a failure — covering part of the cost deliberately, with the rest coming from income, aid or the student, is an ordinary plan rather than a compromise. What the tool can tell you is what each choice implies. What it cannot tell you is what else the money is for.
What is not in the projection
Based on your assumptions, the figures are the arithmetic consequence of a steady return and a steady cost inflation rate. Real markets are neither. The tool shows the result two percentage points either side of your assumed return for exactly this reason.
State income tax benefits for contributions are not modelled at all. Many states offer a deduction or credit, and where one applies, contributing is worth somewhat more than shown here. Financial aid treatment is also outside the model.
Common questions
- Is there a point where contributing more stops making sense?
Arithmetically, yes — once the projection covers the full cost of the education you are planning for, further contributions are funding a bill that is already funded. Money in a 529 is committed to education before it is anything else, so overshooting has a real cost in flexibility. The overfunding tool tests that directly.
- Does stopping contributions mean I lose the tax benefit?
No. The federal benefit is tax-free growth and tax-free withdrawal for qualified education expenses, and it applies to the balance already in the account whether or not you add to it. What stopping forfeits is the growth on the contributions you do not make — and, in states that offer one, any state deduction or credit tied to contributing in that year.
- My child is two years from college. Is it too late to matter?
Contributions still add close to their face value, but very little growth — two years is not long enough to compound meaningfully. With a short horizon the tool’s four paths tend to converge, and the difference between them is roughly the money you put in rather than what it earns.
- Should I stop the 529 and invest somewhere else instead?
That is a different question, and it has its own tool. The trade-off is the 529’s tax advantage on education spending against a brokerage account’s freedom to be spent on anything. Which matters more depends on how confident you are that the money will go to education.
Same numbers, different question
- Am I on track?See your funding ratio and what would close the gap
- Am I putting too much into my 529?Check whether your current path overshoots
- How much should I contribute each month?Work backwards from the bill to a monthly number
- How should I split savings between my children?Work out the split that levels your children up
- I have leftover 529 money. Now what?Rank the reuse, rollover and withdrawal pathways
- 529 or a brokerage account?Weigh the 529 tax advantage against keeping your options open
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