I’m 28 now. Looking back at my early 20s, I made some really dumb financial mistakes. Not catastrophic. Just… stupid. The kind that cost me thousands and set me back years.
If I could talk to 22-year-old me, here’s what I’d say about the 7 biggest mistakes I made.
Mistake #1: Ignored Retirement Completely
Ages 22-25: $0 saved for retirement
My company offered a 401(k) with a 5% match. Free money. I said no.
Why? “I’m 22. Retirement is 40+ years away. I’ll start later.”
What this cost me:
If I’d contributed just enough to get the match ($150/month for 3 years):
- I would’ve put in: $5,400
- Company match: $5,400
- Total invested: $10,800
- Projected value at 65 (7% returns): $147,000+
By waiting until 25, I lost out on $147K in future retirement money.
What I’d do differently:
Start retirement savings on day 1 of first job. Even just 3-5% if money is tight.
The company match is literally free money. Never turn down free money.
Mistake #2: No Emergency Fund Until 26
Ages 22-26: $0-200 in my savings account.
I lived paycheck to paycheck. If my car broke down or I got sick, I put it on a credit card.
Then pay interest on an emergency. Dumb.
What this cost me:
Three “emergencies” I put on credit cards:
- Car repair ($340) → paid $387 total with interest
- Emergency dental work ($680) → paid $748 total with interest
- Broke my phone ($420) → paid $456 total with interest
Total paid in interest on emergencies: $171
Plus months of stress trying to pay off the balances.
What I’d do differently:
Save $1,000 emergency fund BEFORE anything else.
Even if it takes 6 months. Even if you have debt.
$1,000 covers 90% of small emergencies and keeps you out of the credit card trap.
Mistake #3: Lifestyle Inflation After Every Raise
Age 23: Got a $5,000 raise ($2,800 take-home became $3,180/month)
What I did with the extra $380/month:
- Nicer apartment (+$150/month)
- Eating out more (+$120/month)
- New car payment instead of keeping old car (+$280/month)
I was now spending MORE than before the raise.
What this cost me:
If I’d kept my lifestyle the same and saved/invested that $380/month for 3 years:
- Total saved: $13,680
- Could’ve been debt-free + emergency fund + retirement boost
Instead, I was still broke, just with nicer stuff.
What I’d do differently:
Save 50% of every raise.
Got a raise of $5,000? This means you can increase your lifestyle by $2,500 while still saving or paying towards debts or retirement, and the other $2,500.
You will never miss money you never learned to spend
Mistake #4: Buying A New Car You Can’t Afford
Age 24: Bought a $22,000 NEW car with zero down
My logic: I got a raise. I can afford the payment.
My payment: $387 a month for 6 years, $27,864 total loan payments
My old car was paid off, 12 years old, and ran fine.
What did this cost me?
- Insurance: $60 extra a month, which was $4,320 total over 6 years.
- Depreciation: Worth only $11,000 after 3 years.
Total money lost: $21,184 in 3 years.
I could’ve kept my old car for 2 more years, saved $8,000, then bought a used car for $15,000 and paid in cash.
What I’d do differently?
Drive your car until it dies, or the costs of repairs exceed the worth of the car.
New cars lose 20-30% of their worth the moment you drive off the lot.
Buy used cars that are 3-5 years old and pay cash if possible.
Tracking Spending Mistake #5
Ages 22-25: Had no clue how to track spending
I would check my bank every week and think, “What happened to $400 this week?”
Many quick eats, coffee, and random purchases, plus subscriptions and services I forget about.
What this cost me:
Estimated ‘leak’ spending $300-400 per month.
Yearly: $10,800-14,400 is completely wasted.
I could have an emergency fund, or better yet, be debt-free.
What I would do differently this time:
I would track my spending for one month and use the app, and be prepared to see the damage done. I would use an app like Mint, YNAB, or a simple spreadsheet.
At some point, you have to stop tracking spending, but for the sake of your sanity, learn to spend better for your wallet before you track your expenses.
Mistake 6: “Because Everyone Does” Carrying Credit Card Debt.
Ages 23-26: Having $1,500- 2,500 credit card debt was a given in my mind.
I thought this was the norm, “Right? Everyone has credit card debt in their 20s?”
I spent 35-45 dollars a month for just interest. This went on for 3 years.
What this cost me:
$1,400 for interest paid over the years Then the money stress was constant and very low, and it was bad.
What I would do differently this time:
I would spend on my credit card as if it were a debit card.
I would have paid off everything in a month. If you can’t afford to pay for it, it’s not worth it.
The waste of money would be of no interest. It would be normal.
Mistake #7: Always Said Yes To Spend Money Socially
Ages 22-27: No social events turned down
Every weekend:
- Bar on Friday: $40-60
- Brunch on Saturday: $25-35
- Plans on Sunday: $30-50
That’s
100-150/week. 400-600/month
What does this cost me?
Going out for 3 years: $14,400-21,600
I had fun, but ended up in debt.
What I’d do:
Say yes 50% of the time.
Go to every other event. Offer cheaper ideas (hike instead of brunch, house party instead of bar).
Real friends get it. Fake friends get mad when you start being responsible for managing your money.
Also: 90% of those nights you won’t remember anyway.
What these mistakes cost me
I used to think this was due to bad luck. Most people don’t get it.
They don’t care about your money. They care about stealing it from you or using it, even if it is for social activities and not important.
In order to calculate how many mistakes it will take over the decades of your 20s, you need to take the money you spent on unneeded and unplanned activities when you could have done those activities over the years with paid tickets.
- Lost retirement money: $147,000
- Emergency: $171
- Car: $21,184
- Lifestyle: $13,680
- Leak spend: $12,000 (that’s me being conservative)
- Interest on cards: $1,400
- Social spend: $7,200 (very conservative)
Total mistakes 20s $55,000 (this doesn’t include the $147 in lost retirement money).
That’s financial freedom gone. That’s a down payment on a house.
What I’m Doing Now (Age 28)
Can’t change the past, but I fixed my habits:
Current financial situation:
- Emergency fund: $3,200 (working toward $5,000)
- 401k: 8% contribution + 5% match from employer
- Credit card debt: $0 (paying off 2024 debt)
- Spending tracked monthly
- Driving my 2018 car (no new car purchases)
- Declined costly plans 50% of the time
It took me until 26-27 to figure this out. Wish I’d started at 22.
Advice for 22-Year-Olds
Financial priorities in order:
- Start a Roth IRA ($50-100/month) or contribute to your 401(k) for the match
- Start your emergency fund ($1,000)
- Pay off high-interest debt (credit cards, personal loans, etc.)
- Build your emergency fund (3-6 months)
- Increase retirement savings (10-15%)
Things that don’t matter as much as you think:
- Having a new phone
- Driving a nice car
- Living in a trendy apartment
- Going out every weekend
- Keeping up with friends, making more money
Things that matter more than you think:
Starting retirement savings early (compound interest works like magic)
- Having $1,000-$5,000 saved up (eliminates 90% of money worries)
- Living below your means
- Saying no to things you cannot afford
The Bottom Line
Your 20s are for mistakes, but financial mistakes follow you into your 30s, 40s, and beyond.
I made 7 big financial mistakes that cost me $50,000 and years of stress.
You don’t need to start doing everything at once. But don’t make big systematic mistakes:
- Start saving for retirement NOW (even $50/month applies. Just start!).
- Build an emergency fund (at least $1,000 dollars).
- Don’t spend big on lifestyle inflation with every pay raise.
- Buy used cars and not new ones.
- Spend track for one month.
- Pay off your credit cards every month.
- It’s fine to say NO to big spend plans.
Your future self will appreciate your controlled choices. Many financial mistakes can be avoided by understanding how credit works early on.
I’m 28, and I’m finally on track. I just wish I started at 20. Don’t be me. Start now.
Feni. Personal Finance Writer & Budgeting Researcher
Feni focuses on practical budgeting systems, debt reduction strategies, and long-term financial stability. Her work combines real-life experience with research-based financial principles to create sustainable money habits rather than quick-fix solutions.
At ThriftVine, she shares structured, accessible guidance to help individuals build stronger financial foundations and make informed financial decisions.
The information shared on this website is for educational purposes only and should not be considered financial advice. Visit the About the Author page for more information.