We recently talked about the tricky question of whether you should invest while you’re in debt.
It’s a choice many people struggle with because we know debt can be bad and investing can be good.
The desire to tackle both goals raises the question: should we focus on eliminating the bad thing or doing more of the good thing?
In that post, we explored the four main reasons why I think it’s a good idea to invest while in debt. You can read more here.
Today, we’ll talk about another challenging question that many of us face:
Should we prioritize investing for retirement or investing for our children’s college?
Like the question of whether to invest while in debt, this question presents a difficult choice because two things are true at once:
Investing for retirement is a good thing.
Helping our kids is a good thing.
So, what should we do?
This is a question I think about a lot now that I have three young kids.
There are powerful emotional reasons on both sides of the question. And while money decisions are certainly emotional, using simple math can help you choose the right balance between retirement and college.
Let’s start by looking at some of the emotional reasons and then explore how simple math can help us with this difficult choice.
As a parent, I want to help my kids as much as I can.
On the one hand, as a parent, I want to help my kids as much as I can. College is expensive and is only getting more expensive.
I have personally felt the heavy burden of debt. It’s not a good feeling. If I can help my children avoid that feeling by paying for college, I will.
I want to be free to retire on my terms.
On the other hand, I want to be free to retire on my terms. To do so, I know that I need to start investing early and often. Just like college is expensive, retirement can also be very expensive.
I don’t want to be in a position where I’m forced to work longer than I otherwise would because I don’t have enough saved up.
If I skip out on investing for retirement to pay for college, I may end up in that situation.
With powerful emotions on both sides of the question, is it possible to come up with a plan that helps accomplish both goals?
Yes, I think we can. In this instance, it helps to remember that money decisions are both emotional and mathematical.
Let’s revisit some of the math we’ve previously looked at to help us get closer to a decision.
What does the math say about paying for college?
We took a deep dive into saving for college in my post on using 529 plans for sky high college costs.
While nobody can say for certain how much college will cost or how your investments will perform, you can make reasonable estimates and use an online calculator to help form your strategy.
I like the calculator available on Illinois Bright Start 529 website. What’s nice about this website is you can look up the future estimated cost of attending specific schools around the country.
I also like using calculator.net. They have a College Cost Calculator where you can see how much college costs on average today and how much it is estimated to cost when your child starts college.
Whatever online calculator you use, you’ll have to make some assumptions when you start plugging in numbers, like an investment return rate.
The S&P 500 has historically provided a 10% average annual return. So, 10% seems like a reasonable return rate to me for your estimations.
Besides the estimated return rate, you’ll also need to account for the rising costs of college. Most of the online calculators recommend you assume the cost of college will increase by 5% each year. That also sounds reasonable to me.

With these assumptions in mind, let’s look at an example using a current kindergarten student.
Since I live in the Chicago-area, we’ll assume in this example that the kindergarten student is going to the largest in-state college, the University of Illinois Urbana-Champaign (U of I).
Illinois’ Bright Start 529 calculator estimates that the cost of a current kindergarten student attending U of I will be $264,735.
Assuming you don’t have any current savings and you estimate a 10% annual rate of return, the Bright Start 529 calculator indicates you should save $10,796 per year.
That comes out to $900 per month.
By doing the math, you now have a reasonable estimate as to how much you should be saving for college.
You do not have to rely exclusively on long-term savings to pay for college.
If $900 per month seems like a lot of money, keep in mind that you don’t have to depend exclusively on these savings to pay for college.
There are two key reasons for that:
1. Your child can take out student loans.
While it may not be your plan right now, don’t forget that your child always has the option of using student loans to help pay for college. Your child may also earn scholarships or qualify for other financial assistance.
On top of that, there are hundreds of good colleges at varying price points around the globe. It is not the end of the world if your child ends up going to a lower-ranked but less expensive school.
The bottom line is that there are options when it comes to paying for college. It is not exclusively up to your savings to ensure your child gets a good college education.
In other words, don’t convince yourself that your student will be prohibited from attending college if you don’t save enough right now.
2. You will likely still be earning income when your child starts school.
Besides the availability of other options to pay for college, also keep in mind that you will likely still be working when your child starts school. There is no reason that you can’t use some of that income to help pay for school.
If you continue to make intentional, solid money decisions, you should have extra funds available in your budget when your kid starts college.
One way make sure that happens is to keep your expenses constant as your career progresses and you make more money. As an example, let’s say you bought a home while your kids were young. Of course, this is a common path for a lot of professionals who are starting a family.
If you stay in that home long-term, your housing costs should be relatively fixed. As you earn more money, instead of upgrading your home, you can use that excess money to help pay for college.
Once again, the point is that there are options to help your children pay for college even when your investments fall short.
Now, let’s look at the math to figure out how much we should be saving for retirement.
Just like we can use an online calculator to estimate the cost of college, we can also use a calculator to estimate how much we need to save for retirement.
We took a detailed look at how to do this in my post on figuring out your magic retirement number.
The key is to start with the 4% Rule,
The 4% Rule suggests that you can safely withdraw 4% of your investments each year and expect your money to last for 30 years.
Without getting too technical, the 4% Rule is based off of research looking at historical investment gains, inflation, and other variables.
For simplicity, let’s say you have $1 million in your portfolio. According to the 4% Rule, you can safely withdraw $40,000 per year (4% of your portfolio) and not run out of money for 30 years.
Current Savings x 4% (.04) = Annual Retirement Spending |
$1,000,000 x .04 =$40,000.00
The 4% Rule also works in reverse.
By that, I mean you can use the 4% Rule to ballpark how much money you’ll need in retirement to maintain your current lifestyle.
Let’s say that you reviewed your Budget After Thinking and learned that you spend $6,000 per month in Now Money and $4,000 per month in Life Money.
Combined, that means your lifestyle costs you $10,000 per month, or $120,000 per year.
To figure out how much you would need in investments to cover your current lifestyle for 30 years, divide $120,000 by .04.
Current Spending / 4% (.04) = Magic Retirement Number |
$120,000 / .04 =$3,000,000.00.
That means to maintain your current lifestyle of spending $120,000 per year for 30 years, you would need $3 million in investments.
In other words, your magic retirement number is $3 million.
Now that you know you will need $3 million in retirement, you can figure out how much you need to be investing today to hit that number.
I like the calculator available on investor.gov for this part.
With this calculator, you can plug in your investment goal, initial investment, years until retirement, and interest rate to figure out how much you need to save each month.
Let’s continue our example assuming your magic retirement number is $3 million.
We will also assume that you currently have $100,000 saved for retirement and you plan to retire in 30 years. We’ll also use the same 10% annual rate of return we used before.
Based on these assumptions, you would need to save $635.82 each month to hit your magic retirement number of $3 million.
With this information, you can now plan accordingly to make sure you are saving enough for retirement each month before you start worrying about college.

Aim to hit your monthly retirement target before saving for college.
By using these simple online calculators, you can estimate exactly how much you need to save for college and to save for retirement.
I recommend that you aim to hit your monthly retirement target first before funding your college savings accounts.
As we mentioned above, you and your child will have other options to help pay for college, like loans, scholarships, and concurrent income.
By contrast, these options are not readily available to fund your retirement. You’re more-or-less on your to sustain yourself.
Think about it: by definition, retirement means ceasing to work. That means no income coming in besides your retirement savings. There are not any loans (at least reasonable ones) or scholarships to bail you out in retirement.
Sure, you could try to work part-time during retirement. But, that means you’re really only partially retired. Plus, it would be nice to have the choice to work in retirement because you want to work instead of being forced to do so.
It’s for these reasons why you should prioritize saving for retirement over saving for college.
In an ideal world, you can do both. If you control your expenses as your income grows, you give yourself the best chance to do both.
How are you balancing investing for retirement with investing for college?
While money decisions are certainly emotional, using simple math can help you choose the right balance between retirement and college.
My recommendation is to prioritize retirement over college because of the additional options available to help pay for college. You’re essentially on your own when it comes to retirement.
Once you’ve calculated your magic retirement number, you can then calculate exactly how much to save each month.
When you can comfortably hit that number, you can then figure out how much to be saving for college.
- Are you currently saving for retirement and for college?
- How do you balance doing both?
- Have you thought about other ways to help pay for college besides the options we discussed?
Let us know in the comments below.