Investor Success: Measure in Dollars, not (Per)Cents
You can’t control the markets, but a big part of your success in investing for retirement is entirely in your own hands.


The concept of “investing success,” as it often appears in the media, is a tangled web to me. Every time I read something about the topic, I can’t help but feel that the authors are confusing two very different efforts: investment success and investor success.
Yes, this is nuanced, but yes, it matters. Too often, investment success is defined in either absolute or relative returns (which is another nuance for another time). While I understand why a portfolio manager would focus on higher returns, I’d argue that this shouldn’t be the benchmark for success for the typical investor. Instead, they should be focused on building the wealth they need to fulfill the objectives that matter most to them. Wealth is measured in dollars, not percents.
Your Savings Rate Is a Huge Factor in Your Success as an Investor
Sure, better returns build more wealth faster, but higher returns are not essential to building wealth. Investing is a partnership between an investor and the markets, where an investor provides the capital and the markets provide the prospects for a return on that capital. Understanding this relationship introduces a most important point for building wealth — capital contributions.

Sign up for Kiplinger’s Free E-Newsletters
Profit and prosper with the best of expert advice on investing, taxes, retirement, personal finance and more - straight to your e-mail.
Profit and prosper with the best of expert advice - straight to your e-mail.
A portfolio’s value can grow through both capital contributions and the return on capital, but only one part of this equation can grow wealth reliably: our capital contributions, or more generally, our savings. It’s our contribution to our own investment success and importantly, unlike the investment returns we seek, its benefits are both more certain and within our control.
Contributing More to Savings vs. Taking More Risk
As illustrated in the figure below, moving from a more conservative asset allocation (50% stocks/50% bonds) to a more aggressive one (80% stocks/20% bonds) tends to widen the range of expected outcomes. At any asset allocation choice, higher savings levels contribute to higher best, worst, and median expected outcomes, due to the higher levels of capital contributions.
What is often overlooked, however, is that higher levels of capital contributions allow investors to improve their expected outcomes not only relative to the same asset allocation, but also relative to a higher risk allocation. For example, for the 50% stocks/50% bonds portfolio, a 6% contribution rate provides a better range of total potential outcomes than a 4% savings rate for the same asset allocation and for the majority of expected outcomes in even riskier allocations.
Higher returns are welcomed, but they are a less reliable source of asset growth and wealth creation.
A most extreme version of this scenario played itself out on the national stage when the Powerball lottery offered a $1 billion-plus jackpot. While the lottery gave a player a chance for a fabulous return on their $2 ticket, probability-wise, a player’s wealth would increase more certainly if they didn’t play the lottery at all (since they’re most likely to lose their whole “investment” in lottery tickets).
The Bottom Line for Investors
Investing involves tradeoffs, and an important part of the financial planning process is for an investor to define their willingness to forgo spending now to improve their prospects for building wealth that can provide for their future needs. This is critically important, as a higher savings rate provides a higher probability of investor success. This is due to the partial shift in responsibility for building wealth from the less certain returns from risky assets to a more certain stream of capital contributions.
In the end, if an investor is trying to maximize future wealth, we believe a marginally higher savings rate, rather than a substantially higher risk portfolio, will be more likely to lead to investor success.
Profit and prosper with the best of Kiplinger's advice on investing, taxes, retirement, personal finance and much more. Delivered daily. Enter your email in the box and click Sign Me Up.

Don Bennyhoff, CFA®, serves as the Chairman of the Investment Committee and Director of Investor Education at Liberty Wealth Advisors, a $1.7B RIA. An industry expert who spent over 22 years at The Vanguard Group, Don was a Founding Member of Vanguard’s Investment Strategy Group, and served as a Senior Investment Strategist.
-
Higher Summer Costs: Tariffs Fuel Inflation in June
Tariffs Your summer holiday just got more expensive, and tariffs are partially to blame, economists say.
-
Don’t Miss Alabama Tax-Free Weekend 2025
Tax Holiday Ready to save? Here’s everything you need to know about the 2025 back-to-school Alabama sales tax holiday.
-
New SALT Cap Deduction: Unlock Massive Tax Savings with Non-Grantor Trusts
The One Big Beautiful Bill Act's increase of the state and local tax (SALT) deduction cap creates an opportunity to use multiple non-grantor trusts to maximize deductions and enhance estate planning.
-
Know Your ABDs? A Beginner's Guide to Medicare Basics
Medicare is an alphabet soup — and the rules can be just as confusing as the terminology. Conquer the system with this beginner's guide to Parts A, B and D.
-
I'm an Investment Adviser: Why Playing Defense Can Win the Investing Game
Chasing large returns through gold and other alternative investments might be thrilling, but playing defensive 'small ball' with your investments can be a winning formula.
-
Five Big Beautiful Bill Changes and How Wealthy Retirees Can Benefit
Here's how wealthy retirees can plan for the changes in the new tax legislation, including what it means for tax rates, the SALT cap, charitable giving, estate taxes and other deductions and credits.
-
Portfolio Manager Busts Five Myths About International Investing
These common misconceptions lead many investors to overlook international markets, but embracing global diversification can enhance portfolio resilience and unlock long-term growth.
-
I'm a Financial Planner: Here Are Five Smart Moves for DIY Investors
You'll go further as a DIY investor with a solid game plan. Here are five tips to help you put together a strategy you can rely on over the years to come.
-
Neglecting Car Maintenance Could Cost You More Than a Repair, Especially in the Summer
Worn, underinflated tires and other degraded car parts can fail in extreme heat, causing accidents. If your employer is ignoring needed repairs on company cars, there's something employees can do.
-
'Drivers License': A Wealth Strategist Helps Gen Z Hit the Road
From student loan debt to a changing job market, this generation has some potholes to navigate. But with those challenges come opportunities.