Your 20s are the most powerful decade for building wealth. Most people look back on their 20s and wish they had known the mistakes they know now. In this Financial Advisors Explain, Brian walks through five financial rules designed specifically for this decade, covering everything from compound growth and the wealth multiplier to debt traps, Roth IRAs, and why automation might be the most underrated wealth-building tool you have right now.

The decisions you make in your 20s have a compounding effect of their own, and the gap between starting today and waiting just a few more years is bigger than most people realize. Watch the full episode to see exactly how the Financial Order of Operations can help you make the most of every dollar and every year you have ahead of you.

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Episode Transcript

The Success Sequence and Why Your 20s Matter (0:00)

Brian: There’s a concept researchers call the success sequence: graduate high school, get a full-time job, and get married before having children. Researchers found that 97% of millennials who followed that sequence are not poor when they reach adulthood, even though they might be facing disadvantages. But what if you want to go to the next level? There’s a big difference between avoiding poverty and building a life of real financial freedom. And the decisions you make in your 20s are going to have a major impact on which one you end up with. So today, we’ll cover five simple rules to help you absolutely conquer your 20s and set yourself up for a truly bright future.

Rule #1: Stop Trying to Look Rich (0:40)

Brian: The first rule for conquering your 20s is pretty simple and definitely important: don’t try to look rich. In this stage of life, you’ll likely see some of your friends and co-workers start to drive nicer cars, take luxury vacations, or even buy a house. And that can create this nagging feeling that you’re behind. But don’t compare yourself to people who seem to be ahead of you, especially those in their 30s and 40s. You’re not supposed to be where they are. You’re at the very beginning of your wealth-building story, and that is a good thing. Even starting from nothing, you can still absolutely crush it financially as long as you don’t spend the next decade trying to look like you already have it all together.

Brian: The people who build real lasting wealth are almost never the ones driving the flashiest cars or living in the biggest houses in their 20s and 30s. They’re the ones who quietly made a decision early on to be rich instead of just looking rich. They stopped trying to impress people with their spending and started putting that money to work instead. In your 20s, that’s one of the best decisions you can make because of how much time your money has to grow.

Rule #2: Understand Your Wealth Multiplier (1:50)

Brian: Which brings us to the next rule for conquering your 20s: take advantage of your wealth multiplier. Your wealth multiplier tells you how much every invested dollar can grow from now to age 65, depending on what age you are when it’s invested. When you’re 20 years old, your wealth multiplier is 88.35 – 88 times over, as I like to say. Meaning every dollar you invest at age 20 has the potential to grow to $88 by age 65 based on the historical returns of the S&P 500. But your wealth multiplier quickly starts to drop as you get older. For a 25-year-old, it drops roughly in half to 44. And by the time you’re 29, it’s all the way down to 26.

Brian: If the multipliers are not connecting, consider this. A 20-year-old only has to save $95 a month to potentially be a millionaire at retirement. For a 25-year-old, the number increases to $184 a month, and $332 a month for a 29-year-old. This is why it’s so important to get started investing early and do it often. And the reason behind all of this is compounding growth this phenomenon where your money starts to make its own money, and then that money starts to make its own money. Over a long enough period of time, that compounding growth produces incredible exponential results. But it takes time. And that’s why the dollar you invest at age 22 is worth dramatically more than the dollar you invest at age 42. When you’re in your 20s, you’re literally a billionaire of time.

Brian: We’ll talk about where to invest in a moment, but first, let’s talk about how much to invest. Our Money Guy rule is to save and invest 25% of your gross income. But if you want to be more precise, the actual amount depends on how old you are right now, and it changes every year you wait. If you’re 26 and start investing 24% of your income now, by the time you’re 55 your nest egg would be generating 80% of your current income, and you could retire 10 years earlier than the typical retirement age. And if you’re 20 and you want to retire at 65, you’d actually only need to save 9% of your income to replace 80% of your income in retirement. But each year you wait, the number goes up. And once you get into your 30s, the required savings rate starts to climb to a level of sacrifice most people simply aren’t prepared for. This comes from our resource called How Much Should You Save? It maps this out year by year and you can get it for free at moneyguy.com/resources.

Rule #3: Follow a Financial System (4:31)

Brian: The next rule to help you conquer your 20s is to follow a system. Knowing you should invest and save is one thing. Knowing exactly where to put the money and in what order is a completely different thing. Many people find it hard to make progress with their money simply because they don’t know what to do next. Should I invest or pay off debt first? How much emergency fund do I need? Should I open a Roth IRA or just use my company’s 401(k)? The Financial Order of Operations answers those questions. The FOO is a step-by-step system that tells you exactly where to put your next dollar.

Brian: Here’s a quick rundown of which accounts to use and when. Once you’ve completed step one, which is to have enough cash saved to cover your highest insurance deductible, you can start investing in your employer’s 401(k) — but only up to the match. That match is an instant 50 to 100% guaranteed return on your money, and you don’t want to pass that up. After that, eliminate all high-interest debt and build your full emergency fund. And once you’ve completed those steps, you can start investing in your Roth IRA. In your 20s, you’re almost certainly in a lower tax bracket than you’ll be in your peak earning years. A Roth IRA lets you pay taxes on contributions now at that lower tax rate and then withdraw everything in retirement completely tax-free. The 2026 contribution limit is $7,500 per year for those under 50. Max it out if you can. Then if you still have more to invest, go back to that employer 401(k) and increase contributions there. After that, a taxable brokerage account offers additional flexibility with no contribution limits and no restrictions on access. Follow that sequence and you’ll be building all three tax buckets simultaneously, which sets you up for a much more efficient retirement down the road.

Rule #4: Avoid High-Interest Debt (6:30)

Brian: Rule number four: avoid high-interest debt. In your 20s, there are two types of debt that are huge obstacles to building wealth car loans and student loans. The average new car payment in the United States hit a record $767 per month in the fourth quarter of 2025. And the average auto loan term is now nearly 69 months. That’s almost six years of payments on an asset that loses around 20% of its value in the first year alone. And the gravity of that payment really sinks in when you consider what that money could have become. $767 a month invested over 40 years at a 10% average annual return has the potential to grow to over $4.8 million.

Brian: But we know not everyone can do that, especially when you’re just starting out and you need a way to get to work. So we created the 20/3/8 rule. If you finance a car, follow these three guidelines: put at least 20% down, pay it all off in three years or less, and keep your total monthly car payment at or below 8% of your gross monthly income. This car-buying rule gives you some flexibility for those of you struggling to buy reliable transportation in cash without derailing your financial goals.

Brian: We also have a guideline to help you when it comes to student loans, which can be a huge wealth killer. Total student loan debt in the United States now stands at $1.8 trillion and the average federal borrower carries a balance of nearly $40,000. Education can be a tremendous wealth accelerator you just need to do it the right way. A degree that opens the door to a high-earning career at a reasonable cost is a great investment in yourself. But taking on student debt without a plan can saddle you with a large monthly payment for decades. Our guidance here is the first-year financing rule: your total student loan balance at graduation should not exceed your expected first-year salary in your chosen field. So if you’re studying engineering with a projected starting salary of $65,000, keep your total loans under $65,000. A loan balance at or below your first-year salary is manageable on a standard repayment plan without crowding out your ability to save and invest for the future. If you already have more student loan debt than this rule suggests, prioritize paying it down as soon as possible, then redirect those monthly payments to your own investment accounts and get that money working for you that much sooner.

Rule #5: Automate Your Financial Future (9:00)

Brian: Which brings us to the final rule for conquering your 20s: automate your future. In the largest ever study of millionaires, three out of four said that regular, consistent investing over a long period of time leads to success. And the best way to do this is to make your investing automatic. Set up your 401(k) contribution through your employer’s payroll system so it comes out of every paycheck before you even see it. And set up an automatic monthly transfer to your Roth IRA on the day after your payday. The earlier you do this, the better, because you want to give your army of dollar bills plenty of time to take advantage of compounding growth. And if you have high-interest debt that you’re paying down, you can automate those payments too. The goal is to make the good behaviors easy and the bad behaviors that much harder. And if you can get those good behaviors automated in your 20s, you’re really setting yourself up for a bright financial future.

Brian: Here’s why all of this is so important right now. When you’re young, you just have to make very small decisions and avoid big mistakes. But as you age, you have to take big actions and avoid making even small mistakes — and that’s hard. But the good news is that you’re right here, right now, at the exact moment when small actions produce big outcomes. So don’t miss this. And if you want the full step-by-step road map, check out our complete Financial Order of Operations so you know exactly how to make the most of every dollar you have right now. And as always, keep building towards your great big beautiful tomorrow.

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