Published on Feb 15, 2025 5 min read

Exploring Tax Drag: How Taxes Impact Investment Growth Over Time

If you've ever thought that your investment returns just weren't what you hoped for, tax drag might be the hidden culprit. An unavoidable part of life, taxes have a sneaky way of eroding the investment gains over time, limiting the compounding magic that makes long-term wealth building possible.

So, what is tax drag anyway, and why does it matter? It isn't just a one-time hit; tax drag accumulates over time, cutting into the growth of your investments. If you know how tax drag works and have a basic understanding of some simple strategies to minimize it, you'll have more of your earnings to protect and get to your financial goals sooner.

What is Tax Drag?

Tax drag refers to the tax paid ON the return on an investment, which reduces the rate of growth of that investment. Tax drag is different than upfront taxes, like sales tax or payroll, that take a bite out of your returns upfront; tax drag is a slow, gradual bite each year. When they get devoured by taxes, your investments grow slower than they might otherwise. Over decades, this incremental reduction in compounding (or, as it has become known, "compounding's silent enemy") can make a big difference. You need to understand tax drag because it's not always obvious, but it's happening to most investments in taxable accounts.

For example, if your investment returns 10 percent per year, but 2 percent of that return is taxed away, you will be left with an 8 percent after-tax return. A 2% tax on returns doesn't sound like much until you look at it for years and decades. Tax drag does not just affect high-income investors; it affects anyone with a taxable investment account where all returns are gradually eroded.

Types of Taxes Contributing to Tax Drag

Dividend and Interest Taxes: When you receive dividends or interest, those payments are often subject to taxes. Qualified dividends in the U.S., for example, might be taxed at a lower capital gains rate, but non-qualified dividends and interest income can be taxed at the regular income rate. Taxing these distributions annually means that a portion of what could be reinvested is instead going toward taxes, reducing the total amount invested.

Capital Gains Taxes: Whenever you sell an asset for a profit, youll likely owe capital gains tax. Short-term capital gains, which apply to assets held for less than a year, are taxed at the same rate as ordinary income, while long-term capital gains on assets held longer than a year are typically taxed at a lower rate. However, even long-term gains add up, and every taxable event means some of your profit is going to taxes rather than reinvestment.

Mutual Fund Distributions: Many mutual funds distribute gains to investors at the end of the year. These distributions can result in tax liability even if you dont personally sell any shares. These forced taxable events mean youre paying taxes even when you havent actively taken gains, which contributes to tax drag.

Realized Losses: Although this aspect works differently, realized losses in a portfolio can sometimes counteract capital gains, reducing the taxable income. However, this tax benefit is often overshadowed by gains, especially in long-term, growing investments.

Example of Tax Drag in Action

Lets say you invest 10,000 with an expected annual return of 8%, which is not an unusual rate for a balanced portfolio. In a tax-free scenario, after 20 years, your investment would grow to around 46,610. But lets introduce a modest tax drag, assuming that 2% of your 8% annual return is lost to taxes.

With this 2% annual tax drag, your effective return becomes 6% instead of 8%. After 20 years, your investment would grow to only 32,071a significant 14,539 difference from the tax-free scenario. This example underscores how tax drag can have a profound impact over the long term, reducing your wealth-building potential without any visible signs in the short term.

Reducing Tax Drag: Practical Strategies

Understanding tax drags impact is essential, but even more critical is knowing how to manage it. While tax drag can't be eliminated entirely, there are practical strategies to reduce it, allowing you to keep more of your returns in the market and work toward your financial goals.

Tax-Advantaged Accounts

One of the easiest ways to minimize tax drag is by using tax-advantaged accounts like IRAs, Roth IRAs, and 401(k)s in the U.S. or ISAs in the U.K. Contributions to traditional IRAs and 401(k)s are often tax-deductible, and the investments grow tax-deferred until retirement. Roth accounts are funded with post-tax dollars, but the gains grow tax-free. By sheltering investments from yearly taxes, these accounts allow for full compounding without the interference of tax drag.

Tax-Efficient Investment Choices

Certain types of investments are naturally more tax-efficient than others. Index funds and ETFs, for instance, are generally more tax-efficient because they tend to have lower turnover compared to actively managed funds. Lower turnover means fewer taxable events (i.e., fewer sales of securities within the fund), which helps reduce capital gains taxes. Choosing tax-efficient assets can reduce the frequency and magnitude of taxable events, thus minimizing tax drag.

Asset Location Strategy

An asset location strategy involves placing different types of assets in accounts that are most tax-efficient for those specific assets. For example, tax-inefficient investments, such as bonds or REITs that generate regular income, are ideally placed in tax-deferred accounts. In contrast, tax-efficient assets, such as index funds, can be held in taxable accounts without incurring significant tax drag. By placing each investment in the right type of account, you can minimize tax exposure.

Conclusion

Tax drag might not be a term most people use every day, but its impact on investments can be substantial. This gradual erosion of returns through annual taxes on gains, dividends, and interest slowly but steadily reduces the potential growth of your portfolio. Even though tax drag doesnt grab immediate attention, over the years, it chips away at your wealth, costing you thousands of dollars in unrealized gains.