Too many investors are forgetting 1 key element of their portfolio strategy. Here’s how to make sure you’re not missing out on returns in 2026

Some investment strategies can create excessive tax liability in the form of taxable interest, short-term gains, and year-end capital-gains distributions.

Tax-efficient investing, on the other hand, flips the focus from “How do I earn more?” to “How do I keep more?” by reducing avoidable taxes without taking on additional risk.

Not paying attention to taxes effectively means you’re paying a silent fee that can be just as damaging as high expense ratios.

Over several decades, the difference between an unoptimized portfolio and a tax-aware one (where you have made the best use of every type of tax-advantaged account) can amount to a significant portion of your total wealth, due to the loss of future returns that would have compounded on the money you send to the IRS.

What changed in 2026 to make tax-smart planning more powerful

Several 2026 inflation adjustments and retirement-plan limit increases create more room for investors to shelter growth and manage taxable income.

For 2026, the amount you can contribute to your portion of an employer-sponsored 401(k) rises to $24,500 from $23,500 for 2025. The annual IRA contribution limit, both traditional and Roth, is going up from $7,000 to $7,500.

Those who are 50 and over and trying to catch up on retirement savings can contribute an additional $1,100 to their IRAs this year, up by $100 from 2025 (1).

If you have investment income that isn’t sheltered from tax, you will need to pay capital-gains taxes on it. Capital gains are the profits you make from selling assets, such as stocks, that you have held for at least one year. Dividends paid out to stockholders are also taxed as capital gains.

You won’t have to pay capital-gains taxes if your taxable income is at or below a certain level. For the 2025 tax year (so, the return you will be filing shortly), that’s $48,350 for singles, $96,700 married couples filing jointly, and $64,750 for heads of household, which is the IRS’s term for single people with one or more dependents. Above those cut-offs, capital gains are taxed at 15%.

At incomes above $200,000 for single people, or $250,000 for married couples filing jointly, some additional charges start to kick in. Only the very wealthy (think incomes above the half-million range per year) pay the higher rate of 20% (2).

Keeping your taxable income low, and taking advantage of all deductions you can, can also help keep your capital-gains taxes down.

As these adjustments are based on inflation, the cut-offs have gone up quite a bit in just a few years. That means your previous tax strategies used in previous years may need to be recalibrated to take full advantage of the additional room.

Tax strategies to make sure you keep more of your money

Strategy 1: Max out tax-advantaged accounts first

The easiest tax-efficiency win is often choosing the right account type and fully using the tax shelter it provides.

Traditional workplace plans and IRAs can reduce current taxable income and let investments grow tax-deferred, while Roth accounts can create tax-free withdrawals later.

Because limits have increased, investors who were previously capped out may be able to save more in ongoing taxes from dividends, interest, and realized gains.

The Health Savings Account (HSA) remains a powerful savings tool that offers a rare triple-tax advantage of tax-deductible contributions, tax-deferred growth, and tax-free withdrawals for qualified medical expenses. This tax year, you can contribute up to $4,300 for singles and $8,550 for couples. In 2026, that’s going up to $4,400 and $8,750 respectively (3).

Strategy 2: Use asset location to put the least tax-friendly investments in the right container

Asset location is the strategy of placing investments in accounts where they generate the least tax drag.

Higher-dividend stocks generate more yearly taxable income, so many investors prefer to hold them in tax-deferred or Roth accounts when possible. The same is true of bonds and other types of investments that generate interest. That’s because interest is taxed as income, rather than at the lower level of capital gains.

On the other hand, investments that distribute fewer taxable gains can be held in non-tax advantaged accounts, and can benefit from long-term capital-gains treatment when you sell (4).

Strategy 3: Favor long-term capital gains

Holding investments for more than one year qualifies you for lower long-term capital gains rates, while short-term gains of less than one year are taxed as income.

Sometimes, however, you need to sell an asset you’ve had for less than a year. You may be able to offset the gains on that asset by selling a different asset at a loss.

This strategy is called tax-loss harvesting, and it is a smart way to offload stocks or other assets that looked like a good buy but turned out to be disappointing.

If your capital losses exceed your capital gains, you may be able to deduct up to $3,000 of net capital losses against ordinary income each year and carry forward the rest into future tax years.

One notable pitfall of this strategy is the wash-sale rule, which can disallow a loss if you buy “substantially identical” securities within 30 days before or after the sale. This includes purchases made in a spouse's account or even your own IRA, making it essential to coordinate trading activity across all of your financial holdings.

Strategy 4: Choose tax-efficient funds, and watch out for surprise distributions

Fund structure and turnover can determine how much of your return shows up as taxable income each year.

Some exchange-traded funds (ETFs) have historically produced fewer capital-gains distributions than many mutual funds because of how they handle redemptions, though taxes can still apply to distributions you receive.