Start here

Step 1

1. Find out what you are paying

For anyone who owns a fund. Open every account you have and write down what each fund charges you a year. Anything with a cheaper share class of the same thing, or a plain index equivalent, is a straight swap.

Weighted by the money actually in them, index funds and active funds charge 0.09% against 0.57% a year. Booked against the fund an ordinary investor holds instead, moving is worth 0.49% a year. On fifty thousand dollars that is about two hundred and fifty dollars a year you stop handing over, every year.

One wrinkle, because the sticker fee is not what you pay. Funds lend their holdings out and hand most of the income back to shareholders, which cancels a fifth to a third of a broad index fund's charge. SPY cannot lend at all, so it costs 0.0945% a year to own against roughly a quarter of that for the other funds tracking the same index. The shelf prices the rest.

Step 2

2. Pay off debt that costs more than Treasuries pay

For anyone carrying a balance. If you carry debt costing more than the after-tax Treasury yield, paying it down is very likely the best return available to you for the risk you take. Nothing on any fund shelf competes, because this return is certain and none of those are.

A credit-card balance qualifies without argument. A car loan usually does. A cheap fixed mortgage usually does not. Compare against the after-tax yield you could actually get on a short Treasury today, and not against what you hope stocks will do.

This project models a portfolio rather than a household, so nothing here prices that comparison. It is still the first thing to check.

Step 3

3. Take the match, then fill whatever sheltered space you have

If your employer matches your contributions, take the whole match first. It is the only return here that arrives the same day you buy it. No match, or no plan at all, and the rest of this step still applies.

If you have a workplace plan, the 2026 limit on what you can defer into it is $24,500, with more allowed from age 50 and more again in your early sixties. An IRA takes less and steps up the same way. If you are on a high-deductible health plan, a health savings account takes $4,400 on your own, $8,750 for a family, and it is the only account in the US code that is untaxed going in and untaxed coming out. California taxes it anyway, on all three legs.

One thing catches people with an old employer plan. It can be the most expensive thing you own, not for its fees but for its menu: no plan we have seen offers the funds this research would shelter, so the menu forces the wrong fund into your best account. That runs 0.033% to 0.091% a year, more than the whole account-placement decision is worth. One phone call rolls it into an IRA you control.

Step 4

4. Save more

Here is the least interesting sentence on this site and probably the most useful one. The only research conclusion here that its own data can resolve is worth, over a working life, about the same as raising your contributions by 3.08% of your starting balance each year.

One budgeting decision. Available this month, certain, with no fund risk in it at all. Everything below this line is smaller and less sure than that.

The equivalence turns on the ratio of your contributions to your balance, so it shrinks as the account grows. Once the balance is large, fund decisions matter relatively more.

Step 5

5. Set your stock-versus-safe split from your life

For anyone with money invested. Pure growth arithmetic pushes toward holding nothing but stocks, and it gets there by ignoring everything that makes people sell. Choosing 60/40 instead is a forecast whether you write it down or not: it asserts that stocks beat bonds by about a point and a quarter a year, against the five and a half points the US actually delivered over six decades.

Moving from 60/40 to 90/10 measured 1.27% a year against 4.85% of drift, and reaching 90% confidence in that took 24 years. You will decide long before the evidence arrives.

So do not set the split from a return forecast. Set it from your withdrawals, your debts, whether your job disappears in the same recession that takes your portfolio down, and the worst year you would sit through without selling. The number missing from this project is your own tolerable peak-to-trough fall, and nothing here can supply it.

Do not assume the safe side is safe. Over the same six decades an all-bond portfolio fell further and stayed under water longer than a mix holding a third in stocks.

Step 6

6. If you hold more than one kind of account, place each fund where it is taxed least

This step needs both a sheltered account and a taxable one. If all of it sits inside a workplace plan, or all of it sits in a taxable brokerage account, there is nothing here to do.

Same funds, same weights, different accounts, different result after tax. The rule everyone repeats is that bonds go in the IRA and international goes in the taxable account so you can claim the foreign tax credit back. For an investor holding roughly equal thirds across a Roth, a traditional account and a taxable brokerage account, we measured the opposite. Every international fund we priced outranked every US stock fund in the queue for sheltered space, and a plain US total-market fund came last at every rate we tested. Sheltering the international holdings does destroy the foreign tax credit for good, worth 7.4 basis points a year, and it buys back more than that in ordinary income tax you stop paying.

That answer belongs to those account sizes and those rates. Yours are different. The placement tool runs the same arithmetic at your own bracket and your own account split, and it is the only version of this answer worth acting on.

Then the honest part about the size. Getting the ordering right is worth +2 to +7 basis points a year against a control you could actually build, well below what the industry quotes and well below what we used to publish ourselves.

Step 7

7. Leave it alone, and rebalance with new money

For anyone holding more than one fund. Pick one month of the year. Check then, and only then. Act only when a holding has wandered at least a quarter away from where you meant it to be. If you have sheltered accounts, trade in there, where a sale costs no tax. Otherwise point new contributions at whatever is light instead of selling.

On an eight-holding portfolio measured over three and a half decades, that policy held the average distance from target to 0.94 percentage points, at roughly three trades a year and no realisation tax. Left alone, the same portfolio wandered about six times as far. Over a century and a half a drifting 60/40 ends up almost entirely invested in the United States. Buying and holding does not hold a global portfolio. It holds whichever market won.

Do not expect this to make you money. Against never trading at all, the policy returned −0.09% a year, well inside what that test could have seen either way. Rebalance to hold your risk where you put it, which is settled, and which is the actual reason to do it.

Two traps. Never move your review month once you have picked it: the result shifts by about as much as the thing being measured, and moving it is indistinguishable from reacting to a fall. And never set a performance trigger on a holding you bought as ballast, because it will trail often enough to get deleted for doing its job.

Step 8

8. Only now, the optional extras

Everything above is arithmetic. Everything here is a bet. We tested 21 ideas to get to the two worth your attention.

Leaning your stock holdings toward cheap and profitable companies probably beats a cheap index fund by 0.79% a year, on an honest range from about a third of a point to about one and a third. That clears the smallest difference the test could see, narrowly. It would take 30 years of data before a study could separate the gap from zero, and most of it rests on months beginning in 1990, the only stretch the idea has ever been tested on.

The whole reference portfolio, that lean plus a trend fund, cannot be told apart from a cheap index fund holding the same mix. Your own account would need 31 years to settle it.

If you do add anything, notice how you pay for it. Selling a quarter of your stocks to buy a trend fund, and buying a fund that holds the stocks and the trend position at once with borrowing inside it, are different purchases. The gap between them is 2.44 percentage points a year, larger than any extra return this project has measured. Confusing the two has flipped more conclusions here than anything else.

And know what this feels like first. Owning cheap US stocks rather than the whole US market has run 54.3% behind for 17.7 years and still has not caught up. That is the record rather than a simulated worst case.

Sources

Where this comes from

Fee figures are Morningstar's 2026 asset-weighted averages, with fund costs read from annual filings to the SEC, and contribution limits are IRS Notice 2025-67. The account work is in structural and tax edges, the split in setting the equity share, the rebalancing in rebalancing policy. All checked on 2026-08-23.

One thing we could not check for you. Fidelity began charging a per-purchase fee on some exchange-traded funds in 2026, and Schwab has confirmed a comparable programme. On a ten-thousand-dollar purchase that fee outweighs a full year of almost every annual charge here, paid on day one. Whether it hits the funds you want is unverified, so ask your broker.