The Retirement Line Item Nobody Budgets For: Adult Kids
One of the moves worth making before you leave full-time work is making sure the people who depend on your paycheck can stand without it
Our house sat in the woods of a Southeastern city, and the kitchen looked out on a peaceful stand of deciduous trees. On a spring morning the early sun came through the window and lit up our light pine table with its cornflower blue legs. Out in the trees the birds were busy building nests. Our son was maybe seven years old, working through a plate of pancakes and a string of questions that came faster than I could answer them.
"Dad, how do people become an adult?"
I gave him something about getting a job and learning to take care of yourself. He nodded like that tracked.
"When did you stop living with your parents?"
"When I went to college, I lived on my own for the first time. After I graduated, I got my own apartment."
More nodding. Then the conversation took a turn.
There was a girl in the neighborhood, and it was sweet, innocent, puppy love, the kind where you ride your bike past her house three times hoping she's outside. He'd been thinking about her, apparently, and he had questions about what it cost to get married. I walked him through engagements, weddings, and receptions. The part that registered was the cost he'd have to bear himself: an engagement ring.
"Wait a minute. I don't want to have to buy an expensive rock and a ring for some dumb girl!"
I smiled. "When you're truly in love someday, you'll be delighted to buy a ring for that amazing young woman. Trust me on that one."
He wasn't convinced, and he had one more question. How much does an apartment or a house cost? I gave him an honest answer. His elementary school brain couldn't process it. Even five dollars was a lot of money back then.
"I don't want to live on my own and have to spend a bunch of money. Maybe we can build a nest in the Japanese maple in the front yard, and my wife and I can live there with ten kids! Plus I want to live close to you and Mom."
He was small, but every word came out punctuated with a feeling he could barely contain. This wasn't a thought experiment. He was planning his future.
I looked at him for a second and smiled, this little guy who thought adulthood sounded expensive and far away from everything safe. He wasn't wrong on either count.
"Buddy, I'm not sure that Japanese maple can hold ten kids. It might get a little wet when it rains, and pretty cold in the winter. How would you plug in your Wii in a tree?"
That got an exasperated look and an eye roll. The Wii was non-negotiable.
"Maybe an apartment would be better," I said. "Like the ones near your school. You'd have your own space, your own kitchen, your own rules. And you could plug in whatever you want."
He thought about it. "Yeah, maybe."
That front-yard nest became an apartment in Tucson a decade later, with a post-college destination still unknown. The questions got more practical. The pancakes got replaced by fideuà and ramen he learned to cook better than I do. And the job of a parent shifted from answering the questions to making sure your kid can answer them on his own.
In the Gear for the Trail series, Five Financial Decisions That Made My Downshift Possible was about the gear in your pack, the financial moves that can make your own departure possible. 7 Questions to Ask in Building Your Downshift or Retirement Budget was the map, the retirement budget that tells you whether the math works. This week is about something that appears in the budget but lives somewhere deeper: the people who still depend on your paycheck, and what it takes to get them ready to stand without it.
Retirement budgets have lines for health insurance, taxes, and travel. The line that rarely appears is adult kids, and for parents at our stage of life it can be a big one. This post is written for those parents, not for the kids themselves, and it's built around three conversations: one with yourself, one with your partner, and one with your kid.
Conversation 1: The Honest Number
Before you can have a productive conversation with your partner or your child about launching, you need to have an honest one with yourself. And that conversation starts with a number.
According to a 2026 Census Bureau report, 2.6 million parents gave a combined $26.6 billion to adult children over the age of 21 who lived outside the family home. The median was $4,725 per parent, and that doesn't count a dollar spent on adult children still living at home.
The number that stopped me came from a 2024 Savings.com survey of 1,000 parents, reported by Fortune. Parents who financially support their adult children spend 2.4 times more on them than they put toward their own retirement. Read that again. For every dollar going into the 401K, $2.40 is going to an adult child. And 58% of those parents said they've sacrificed their own financial security to do it.
That's keeping a lot of good parents from retiring with dignity, let alone downshifting early. And I don't write that from a distance.
We're delighted to support our son through college, and I know what it costs us. Health insurance runs roughly $500 a month more for a family plan than for two adults. I should have caught that one years ago. Better coverage at a lower cost was available to him the whole time he's been in school, and we've been overpaying for four years. We're fixing it this spring. Add car insurance at about $200 a month, rent and utilities at $675, a $400 food allowance for his off-campus apartment, and gas and miscellaneous expenses. The total comes to roughly $2,000 a month, not counting tuition. That puts us above the national average, which the same Savings.com survey put at nearly $17,000 a year. We're closer to $24,000, and I won't say whether a minor fender bender or two is in that number. All of it is rational, and we're happy to pay it. But when this season ends, we want to sunset it gently and with clarity, for his dignity and for our retirement plan.
When Helping Becomes the Problem
I co-lead a personal finance ministry at our church with a buddy, and we make a good pair because we coach different sides of the ball. He's great at helping families build a lockdown defense: budgeting, debt payoff, protecting the money they already have. I'm stronger on offense: earning, investing, and growing the assets they're building. Winning at money takes both, and neither of us could run the class alone. Over several years of working together we've seen a lot, and the story that sticks with me is a couple who came in spending $3,000 a month on four car payments, and none of the cars were theirs. Their adult children were driving every one of them. That's $36,000 a year flowing out the door and into someone else's driveway.
They were kind people and generous parents, retired and living on a fixed income, and they were sweating how they'd keep paying their own bills. Their kids had no idea what the payments cost because they'd never had to think about it. I think the parents were more worried about disappointing their kids than about a withdrawal rate somewhere near 8% and what it meant for how long their assets would last.
That's the pattern. The same Savings.com survey found that 61% of adult children living at home contribute nothing to household costs. Zero. No chipping in for groceries, no modest rent, no help with the utility bill that went up when they moved back in.
If you've got a 28-year-old in the spare bedroom right now, I'm not writing this to tell you that you've failed, and I'm not writing it from a place of having it all figured out. Housing costs what it costs, starting salaries are what they are, and plenty of good kids need a longer runway than their parents did. Some families are walking a harder road than that. Good friends of ours are raising children with special needs, and full-time employment may never be the picture for them. Even there, public agencies and nonprofits offer job coaches, employer liaisons, and skills training that help young adults find a way to contribute, even if the hours are fewer. The shape of the launch changes. The value of having a plan for it doesn't.
Having your kid at home is fine. Having no number and no date on the arrangement is the part worth a second look.
Charging your adult child rent to improve your own financial position misses the mark. The goal is for them to learn that life costs money and that money comes from work. Start small, maybe a modest monthly amount, and raise it gradually until living at home costs more than a place of their own. One version of a ramp: start at a few hundred dollars a month and add $100 every quarter until the number matches what a one-bedroom apartment would cost. You can even set that money aside in a separate account and hand it back someday toward a down payment. Seen that way, the rent matters less than having a cost real enough to encourage a launch. You're building a ramp, for their good as much as yours.
And having enough of your own is a form of love too. It means you won't need them to fund your healthcare someday because nobody had the awkward conversation while you were both young enough to do something about it.
The question for you: Do you know, to the dollar, what supporting your adult children costs you per month? And do you know when it ends?
Be kind, be clear, but have the conversation. If you don't have a number and a date, you don't have a plan. You have an open tab at a bar that may never close.
Conversation 2: The Shared Playbook
Mrs. Desert FI and I are aligned on money. We always have been. That's not to say it was easy at first, but we were fortunate to have some great premarital counseling that set good patterns early. We budget together. Everything we have is "ours," whatever work choices either of us makes. We invest together, we make the big calls together, and each of us gets a vote.
But we bring different gifts to parenting, and we've been intentional about putting each of them to work.
I tend to teach the money, the career navigation, and the soft skills: how to negotiate, how to think about what you're worth, and how to read a pay stub and understand where the deductions go.
Mrs. Desert FI excels at the practical skills. Our son cooks better than I do, and that's not false modesty. He spent hours from a young age beside her in the kitchen, cutting, peeling, and baking. He knows how to do his own laundry, although Mom is happy to help when he comes home for the weekend. He knows how to properly clean his room, how to keep a kitchen functional, and how to take care of a space. These aren't small things. The kid who can balance a budget but can't cook a meal isn't ready. Neither is the kid who keeps a clean apartment but has never learned that money comes from work.
The conversation we had wasn't "should we stop helping?" We've never framed it that way. The conversation was "what do healthy boundaries look like, how do we encourage him to build a great life, and how do we taper the expenses over time so he doesn't feel the weight all at once?"
Letting Go of the Seat
The analogy I keep coming back to is training wheels. They help a kid balance and build confidence, but as he or she gets better they start to get in the way. The bike wobbles and bounces at every turn, and it's time for the next level.
I can remember it like it was yesterday, running behind our son with my hand on the back of his seat on the blacktop of his elementary school on a weekend morning, flat and smooth, no cars, no distractions. I held the seat steady while he learned to pedal. Then I let go for a single second. He didn't notice. I grabbed the seat again. A few days later it was two seconds, then five. Then one day I was standing in the driveway and he was halfway down the street, pedaling faster and faster toward a pink and yellow sunset. He screamed with joy and a little fear, and I stood there with pride and maybe a tear in my eyes.
That's the taper plan: a gradual release of the seat until they don't need it anymore.
The Red Pepper Test
Here's how I know the hand is almost off the seat, and it was Mrs. Desert FI who spotted it.
There's a dish the two of us learned to make in a cooking class in Barcelona, on a trip I wrote about last month. The dish is fideuà, a cousin of paella made with short noodles and saffron. Our son is vegan, so his version skips the seafood, and he started cooking it regularly at school. A few months ago she noticed he was substituting green bell peppers for red.
"Why green?"
"Red ones are double the price."
That's a frugal instinct, and it's a good one. But she told him that being cost-conscious doesn't mean eating the cheapest option every time. A wide variety of fruits and vegetables matters for your health, for your microbiome, for your quality of life. It's a balance of good financial management, health, variety, taste, and enjoyment. A red pepper is worth the extra dollar when the recipe calls for it. That's her wisdom, not mine, and it's the kind of thing she's been teaching him at the cutting board for years.
He bought the red peppers, and not because she told him to. The logic made sense, and he was already weighing trade-offs on his own. That's the hand coming off the seat.
Try this with your partner: each of you list three skills you're teaching your kid and three nobody has taught your kid yet. The second list is where the work is.
If the two of you haven't agreed on who teaches what, and on when the help ends, send this post to your partner and start there.
Conversation 3: The Taper
This summer we had some good conversations about post-college life and what his budget might look like. I wanted to raise it while he could still do something about it. His choices senior year shape his job prospects more than he knows: polishing interview skills, sharpening the resume, networking with alumni, interviewing on campus. He took it in, and then he told me it "all seemed so theoretical," which is exactly what you'd expect from a college senior who's never missed a meal and still has many months before graduation. Funny how that works. At seven he planned his future at the kitchen table with total conviction. Now the real plan feels theoretical. That's fine. It doesn't have to feel real yet. It has to exist.
Here's ours. He graduates in the spring, and the goal is for him to land a job and an apartment. When he does, the financial support tapers off on a defined schedule. If the job search runs long and he moves home for a season, we'll put a written agreement in place for that, too. Either way, the goal is an independent life by the end of 2027. We're not disappearing. We're letting go of the seat so he can ride on his own.
He knows about the plan. He's read the blog.
What's in Our Taper
Everything on this list is meant to be his by the end of 2027, and the goal is for every cost he carries to be one he can see.
Health insurance: We hope he lands a job with good employer coverage. If he doesn't, he can stay on our plan until he turns 26, and we'd ask him to cover part or all of the added cost, for his good as much as ours.
Auto insurance and cell phone: If staying on the family policy or plan costs less than going out on his own, he stays and sends us his share by Zelle.
Rent, food, and utilities: The allowance we give him now ends on his schedule. If he moves home for a season, the written agreement will take over.
Streaming and clothing: Where sharing adds no cost to us, like Amazon, he can keep using ours as long as he likes. Clothing becomes his budget with his first paycheck.
The other half of the taper is the written agreement. We've used them in our house since our son was a boy. He thrives on clear expectations, and he'd make a fine lawyer, so we put the terms on paper and let him negotiate them. The taper agreement, which will apply if he moves home after graduation, is the grown-up version. The point is clarity, accountability, and a shared picture of success, not rigidity.
It will start with what we commit to. We'll pray for him through this season of transition, offer guidance where he wants it, encourage him, and provide food, shelter, and clothing, always with an eye toward empowering him to build a great life rather than enabling him to slide back into high school life. That's for his good, not for our budget.
Then it will cover what he commits to as a recent graduate and an adult. He'll love and honor us while chasing his own hopes and dreams. He'll treat finding a job like a job, with a set number of hours each week for applications, networking, and interviews. He'll carry his share at home, which means cooking some meals, vacuuming a few rooms, and walking the dog every day, and we'll call that part his rent. Once he's working, he'll save a set percentage of every paycheck and have his own place, with or without a roommate, by the end of 2027.
The Incentives That Stay
Not everything tapers. Some support is worth keeping because it rewards the habits we hope he keeps. Through his teen and early 20s years we've matched his Roth IRA contributions dollar for dollar, what I think of as the "401 Dad" match. Down the road, if markets cooperate and our own plan stays on track, we may gift him highly appreciated shares as part of our estate plan, once he's launched, working full-time, and on his own. Our own retirement comes first. If his income keeps him in the 0% or a low long-term capital gains bracket, he could sell them, pay little or no tax on the gain, and put the cash into his own retirement accounts. The details matter, including cost basis and annual gift limits, so run it by your CFP first.
Then there are the wheels. When my father passed, he left our son his 2013 Hyundai Sonata. Dad hadn't been able to drive in his last few years, so it has low miles, and it's a basic, reliable car that gets you where you need to go without a monthly payment. There's something meaningful about driving your grandfather's car through the season of life where you're becoming the man he hoped you'd be. We'll likely help him buy something newer at graduation, or a year or two later if he'd rather wait. My first car was a $500 Gran Torino I paid for with money I earned, which I wrote about this summer, so I know he's been handed more than I was. We're making that choice with our eyes open, and it will come with a number attached.
The Bag
A plan on paper still felt theoretical, so I did what I usually do. I built a spreadsheet. The first version was in my language, and he told me it sounded "too Boomer." He was right, so I rebuilt it in the language of Gen Z, and that version worked. I can still hear him laughing out loud at the "NPC" model and "That Guy," and then going quiet when he saw that on a low starting salary he was, in his words, "cooked." He went off and researched apartment costs, utilities, Wi-Fi, everything. The tool survived his feedback. The tone didn't.
That spreadsheet became The Bag, a first-paycheck budget planner. If you've got a young adult approaching a first paycheck, it's free to Desert FI Insiders, and you can join at DesertFI.org/join if it's helpful to your parenting and FI journey.
Holding the Plan Loosely
There's a verse in Proverbs about a man's heart planning his way, and the Lord directing his steps. I think about it often in this season, and Mrs. Desert FI and I pray for him daily. We hold our plans for him loosely. My dream is that he settles somewhere nearby, works in Tempe, and builds a life close enough that Sunday dinner doesn't require a production.
His dream involves living near the mountains and skiing on the weekends. Flagstaff, Denver, Salt Lake City, somewhere within a short drive of a great resort. In his dream world, he's working at the home office of Vail Resorts or another winter sports or high adventure company. He once joked about the Vail job, and I laughed, and then I filed it away as a real possibility. Honestly, if he can land a great job near world-class skiing, he should go for it. Part of me wishes I'd done the same at his age, but remote work didn't exist then, and a ski town was a hard place to build a career that wasn't ski bumming.
There's a deep-seated hope in FI planning that nobody writes about. Every parent building toward financial independence has it and rarely says it out loud: that the math includes their kid nearby. They hope the FINE number works and the geography works and the Sunday dinners work, and that the grandkids, someday, are close enough to spoil on a Tuesday afternoon.
The plan has to hold either way. Whether he's twenty minutes away or twenty hours away, the taper runs on the same schedule. The zip code doesn't change the math.
The question for you: Have you told your kid, in plain words, what changes after graduation and when?
Nudging Out of the Nest
At seven, he wanted to build a nest in the Japanese maple out front so he could stay close to us. Now he wants a ski town. Sometimes the nest empties and the bird goes somewhere you didn't pick.
But that's the point. You packed their bag so they could go.
And here's what I didn't expect. He'll be watching us too, as his parents launch into a new chapter of our own a few months before he does, downshifting into flexible, meaningful, part-time work and a great life together. Two generations launching in the same year, one into independence and the other into freedom.
I'll be cheering from the sidelines, just like we did when he was running the dusty trails of cross country in a desert.
Two questions before you go:
Which of these three conversations would be the most beneficial to your young adult, and what's one step you could take this week?
If you've already walked a kid through the launch, what would you tell a parent just starting?
Share your thoughts in the comments below. I read every one and I answer every one.
Let's make wise choices and live a great life together.
🌵 Desert FI
Want to go deeper?
Become a Desert FI Insider. Hard family conversations go better with company. Insiders get Weekend Reflections every Sunday morning plus free Insider-only resources like the FINE Number Calculator, a way to test your plan against your own numbers. If you’re not on the trail with us yet, join at DesertFI.org/join.
Already an Insider? Here are three posts worth exploring:
She Could Have Asked Me to Keep Working: on the conversation with my wife that had little to do with money
The Financial Conversations Most People Avoid: on finding people to talk honestly about money with
7 Questions to Ask in Building Your Downshift or Retirement Budget: on the seven questions behind a retirement budget
